研究業績

Original papers

2022

  1. TBA
    Y. Tanabe, H. Tsutsui, S. Matsuda, S. Shikita, T. Yasuda, and K. Isoda*
    2022, submitted.
    DOI:

  2. TBA
    R. Feng, T. Mori, T. Yasuda, H. Furuta, and S. Shimizu*
    2022, submitted.
    DOI:

  3. Facile Dimerization Strategy for Producing Narrowband Green Multi-Resonance Delayed Fluorescence Emitters
    M. Yang+, R. K. Konidena+, S. Shikita, and T. Yasuda*
    J. Mater. Chem. C 2022, 10, in press.
    DOI: 10.1039/D2TC04447A

  4. Ultrafast Triplet–Singlet Exciton Interconversion in Narrowband Blue Organoboron Emitters Doped with Heavy Chalcogens
    I. S. Park,* H. Min, and T. Yasuda*
    Angew. Chem. Int. Ed. 2022, 61, e202205684.
    DOI: 10.1002/anie.202205684

  5. Blue Thermally Activated Delayed Fluorescence with Sub-Microsecond Short Exciton Lifetimes: Acceleration of Triplet–Singlet Spin Interconversion via Quadrupolar Charge-Transfer States
    H. Min, I. S. Park, and T. Yasuda*
    Adv. Optical Mater. 2022, 10, 2200290.
    DOI: 10.1002/adom.202200290

  6. Axially Chiral 1,1’-Bicarbazolyls with Near-Ultraviolet Circularly Polarized Luminescence
    S. Shikita, T. Harada, and T. Yasuda*
    Chem. Commun. 2022, 58, 4849-4852.
    DOI: 10.1039/D2CC00936F

  7. Achieving Ultimate Narrowband and Ultrapure Blue Organic Light-Emitting Diodes Based on Polycyclo-Heteraborin Multi-Resonance Delayed-Fluorescence Emitters
    I. S. Park,* M. Yang, H. Shibata, N. Amanokura, and T. Yasuda*
    Adv. Mater. 2022, 34, 2107951. [Open Access]
    DOI: 10.1002/adma.202107951

  8. Ester-Functionalized Thermally Activated Delayed Fluorescence Materials
    H. Tasaki, S. Shikita, I. S. Park, and T. Yasuda*
    J. Mater. Chem. C 2022, 10, 4574-4578.
    (Themed Issue: Materials for thermally activated delayed fluorescence and/or triplet fusion upconversion)
    DOI: 10.1039/D1TC04933J

2021

  1. An S-Shaped Thienoacene Semiconductor Forming Unique Cruciform Lamellar Packing via a 2D Interaction Network of π-Stacking and Chalcogen Bonding
    T. Mori,* Y. Yamaguchi, S. Kawata, and T. Yasuda*
    J. Mater. Chem. C 2021, 9, 13090-13093.
    DOI: 10.1039/d1tc03871k

  2. Deep-Blue OLEDs Based on Organoboron–Phenazasiline-Hybrid Delayed Fluorescence Emitters Concurrently Achieving 30% External Quantum Efficiency and Small Efficiency Roll-Off
    I. S. Park,* H. Min, J. U. Kim, and T. Yasuda*
    Adv. Optical Mater. 2021, 9, 2101282.
    DOI: 10.1002/adom.202101282

  3. Wide-Range Color Tuning of Narrowband Emissions in Multi-Resonance Organoboron Delayed Fluorescence Materials through Rational Imine/Amine Functionalization
    M. Yang+, S. Shikita+, H. Min+, I. S. Park, H. Shibata, N. Amanokura, and T. Yasuda*
    Angew. Chem. Int. Ed. 2021, 60, 23142-23147.
    DOI: 10.1002/anie.202109335

  4. Fused-Nonacyclic Multi-Resonance Delayed Fluorescence Emitter Based on Ladder-Thiaborin Exhibiting Narrowband Sky-Blue Emission with Accelerated Reverse Intersystem Crossing
    M. Nagata, H. Min, E. Watanabe, H. Fukumoto, Y. Mizuhata, N. Tokitoh, T. Agou,* and T. Yasuda*
    Angew. Chem. Int. Ed. 2021, 60, 20280-20285.
    DOI: 10.1002/anie.202108283
    Selected as Hot Paper!

  5. Regulation of Multicolor Fluorescence Changes Found in Donor–Acceptor-Type Mechanochromic Fluorescent Dyes
    T. Ishi-i,* H. Tanaka, R. Kichise, C. Davin, T. Matsuda, N. Aizawa, I. S. Park, T. Yasuda, and T. Matsumoto
    Chem. Asian J. 2021, 16, 2136-2145.
    DOI: 10.1002/asia.202100538

  6. Alternating Donor–Acceptor π-Conjugated Macrocycle Exhibiting Efficient Thermally Activated Delayed Fluorescence and Spontaneous Horizontal Molecular Orientation
    S. Shikita, G. Watanabe, D. Kanouchi, J. Saito, and T. Yasuda*
    Adv. Photonics Res. 2021, 2, 2100021. [Open Access]
    DOI: 10.1002/adpr.202100021

  7. Thermal Equilibration between Singlet and Triplet Excited States in Organic Fluorophore for Submicrosecond Delayed Fluorescence
    N. Aizawa, A. Matsumoto, and T. Yasuda*
    Science Adv. 2021, 7, eabe5769. [Open Access]
    DOI: 10.1126/sciadv.abe5769
    Press Release!

  8. cis-Quinacridone-Based Delayed Fluorescence Emitters: Seemingly Old but Renewed Functional Luminogens
    H. Min, I. S. Park, and T. Yasuda*
    Angew. Chem. Int. Ed. 2021, 60, 7643-7648.
    DOI: 10.1002/anie.202016914

  9. U-Shaped Heteroacenes Embedded with Heavy Chalcogen Atoms: Unique Bilayer Self-Organization of Crooked π-Cores Enabling Efficient Charge Transport
    T. Mori and T. Yasuda*
    Adv. Electron. Mater. 2021, 7, 2001052.
    DOI: 10.1002/aelm.202001052

  10. Phenyl-Triggered Photophysical Switching between Normal Fluorescence and Delayed Fluorescence in Phthalonitrile-Based Luminophores
    I. S. Park,* H. Min, and T. Yasuda*
    Aggregate 2021, 2, 145-150. [Open Access]
    DOI: 10.1002/agt2.14
    Highlighted as an Inside Front Cover!

  11. Regiocontrolled Synthesis of Ester-Functionalized Polythiophenes via Direct Arylation Polycondensation
    T. Menda, T. Mori, and T. Yasuda*
    Polym. J. 2021, 53, 403-408.
    DOI: 10.1038/s41428-020-00421-7

2020

  1. Full-Color, Narrowband, and High-Efficiency Electroluminescence from Boron and Carbazole Embedded Polycyclic Heteroaromatics
    M. Yang, I. S. Park, and T. Yasuda*
    J. Am. Chem. Soc. 2020, 142, 19468-19472.
    DOI: 10.1021/jacs.0c10081
    Highlighted in EE Times Japan!
    Press Release!

  2. Solution-Processable Organic Semiconductors Featuring S-Shaped Dinaphthothienothiophene (S-DNTT): Effects of Alkyl Chain Length on Self-Organization and Carrier Transport Properties
    Y. Yamaguchi,* Y. Kojiguchi, S. Kawata, T. Mori, K. Okamoto, M. Tsutsui, T. Koganezawa, H. Katagiri, and T. Yasuda*
    Chem. Mater. 2020, 32, 5350-5360.
    DOI: 10.1021/acs.chemmater.0c01740

  3. Near Infrared Absorbing Pyrrolopyrrole Aza-BODIPY-Based Donor–Acceptor Polymers with Reasonable Photoresponse
    R. Feng, N. Sato, M. Noda, A. Saeki, H. Nakanotani, C. Adachi, T. Yasuda, H. Furuta,* and S. Shimizu*
    J. Mater. Chem. C 2020, 8, 8770-8776.
    DOI: 10.1039/D0TC01487G

  4. Mechanochromic Delayed Fluorescence Switching in Propeller-Shaped Carbazole–Isophthalonitrile Luminogens with Stimuli-Responsive Intramolecular Charge-Transfer Excited States
    M. Yang, I. S. Park, Y. Miyashita, K. Tanaka, and T. Yasuda*
    Angew. Chem. Int. Ed. 2020, 59, 13955-13961.
    DOI: 10.1002/anie.202005584

  5. White-Light Emission from a Pyrimidine–Carbazole Conjugate with Tunable Phosphorescence–Fluorescence Dual Emission and Multicolor Emission Switching
    T. Ishi-i,* H. Tanaka, I. S. Park, T. Yasuda, S. Kato, M. Ito, H. Hiyoshi, and T. Matsumoto
    Chem. Commun. 2020, 56, 4051-4054.
    DOI: 10.1039/D0CC00251H
    Highlighted as an Inside Front Cover!

  6. Rational Design of Pyrrolopyrrole-Aza-BODIPY-Based Acceptor-Donor-Acceptor Triads for Organic Photovoltaics Application
    R. Feng, N. Sato, T. Yasuda, H. Furuta,* and S. Shimizu*
    Chem. Commun. 2020, 56, 2975-2978.
    DOI: 10.1039/D0CC00398K

  7. An Isonicotinonitrile-Based Blue Thermally Activated Delayed Fluorescence Emitter
    I. S. Park* and T. Yasuda*
    Chem. Lett. 2020, 49, 210-213.
    DOI: 10.1246/cl.190808

  8. A Liquid-Crystalline Semiconducting Polymer Based on Thienylene–Vinylene–Thienylene: Enhanced Hole Mobilities by Mesomorphic Molecular Ordering and Thermoplastic Shape-Deformable Characteristics
    T. Mori, H. Komiyama, T. Ichikawa, and T. Yasuda*
    Polym. J. 2020, 52, 313-321.
    DOI: 10.1038/s41428-019-0282-4

  9. Dipolar and Quadrupolar Luminophores Based on 1,8-Dimethylcarbazole–Triazine Conjugates for High-Efficiency Blue Thermally Activated Delayed Fluorescence OLEDs
    H. Min, I. S. Park, and T. Yasuda*
    ChemPhotoChem 2020, 4, 82-88.
    DOI: 10.1002/cptc.201900186

  10. Pentacyclic Ladder-Heteraborin Emitters Exhibiting High-Efficiency Blue Thermally Activated Delayed Fluorescence with an Ultrashort Emission Lifetime
    T. Agou,* K. Matsuo, R. Kawano, I. S. Park, T. Hosoya, H. Fukumoto, T. Kubota, Y. Mizuhata, N. Tokitoh, and T. Yasuda*
    ACS Materials Lett. 2020, 2, 28-34.
    DOI: 10.1021/acsmaterialslett.9b00433

2019

  1. Blue Thermally Activated Delayed Fluorescence Emitters Incorporating Acridan Analogues with Heavy Group 14 Elements for High-Efficiency Doped and Non-Doped OLEDs
    K. Matsuo* and T. Yasuda*
    Chem. Sci. 2019, 10, 10687-10697.
    DOI: 10.1039/C9SC04492B
    Highlighted as an Inside Front Cover!

  2. Synthesis of Anthracene Derivatives with Azaacene-Containing Iptycene Wings and the Utilization as a Dopant for Solution-Processed Organic Light-Emitting Diodes
    H. Hayashi,* Y. Kato, A. Matsumoto, S. Shikita, N. Aizawa, M. Suzuki, N. Aratani, T. Yasuda, and H. Yamada*
    Chem. Eur. J. 2019, 25, 15565-15571.
    DOI: 10.1002/chem.201903476

  3. Organic Energy-Harvesting Devices Achieving Power Conversion Efficiencies over 20% under Ambient Indoor Lighting
    R. Arai,* S. Furukawa, N. Sato, and T. Yasuda*
    J. Mater. Chem. A 2019, 7, 20187-20192.
    DOI: 10.1039/C9TA06694B
    Selected as 2019 Journal of Materials Chemistry A HOT Papers!

  4. Strategic End-Halogenation of π-Conjugated Small Molecules Enabling Fine Morphological Control and Enhanced Performance of Organic Solar Cells
    S. Furukawa and T. Yasuda*
    J. Mater. Chem. A 2019, 7, 14806-14815.
    DOI: 10.1039/C9TA03869H

  5. Mechanochromic Fluorescence Based on a Combination of Acceptor and Bulky Donor Moieties: Tuning Emission Color and Regulating Emission Change Direction
    T. Ishi-i,* H. Tanaka, R. Youfu, N. Aizawa, T. Yasuda, S. Kato, and T. Matsumoto
    New J. Chem. 2019, 43, 4998-5010.
    DOI: 10.1039/C8NJ06050A
    Highlighted as a Front Cover!

  6. High-Performance Organic Energy-Harvesting Devices and Modules for Self-Sustainable Power Generation under Ambient Indoor Lighting Environments
    R. Arai,* S. Furukawa, Y. Hidaka, H. Komiyama, and T. Yasuda*
    ACS Appl. Mater. Interfaces 2019, 11, 9259-9264.
    DOI: 10.1021/acsami.9b00018
    Highlighted in ACS Weekly PressPac!

  7. Boronate- and Borinate-Based π-Systems for Blue Thermally Activated Delayed Fluorescence Materials
    K. Matsuo and T. Yasuda*
    Chem. Commun. 2019, 55, 2501-2504.
    DOI: 10.1039/C8CC10282A

2018

  1. High-Crystallinity π-Conjugated Small Molecules Based on Thienylene-Vinylene-Thienylene: Critical Role of Self-Organization in Photovoltaic, Charge-Transport, and Morphological Properties
    S. Furukawa, H. Komiyama, N. Aizawa, and T. Yasuda*
    ACS Appl. Mater. Interfaces 2018, 10, 42756-42765.
    DOI: 10.1021/acsami.8b17056

  2. Modulating Photo- and Electroluminescence in a Stimuli-Responsive π-Conjugated Donor–Acceptor Molecular System
    K. Isayama, N. Aizawa, J. Y. Kim, and T. Yasuda*
    Angew. Chem. Int. Ed. 2018, 57, 11982-11986.
    DOI: 10.1002/anie.201806863
    Selected as Hot Paper!
    Highlighted in Chemistry Views!

  3. High-Performance Dibenzoheteraborin-Based Thermally Activated Delayed Fluorescence Emitters: Molecular Architectonics for Concurrently Achieving Narrowband Emission and Efficient Triplet–Singlet Spin Conversion
    I. S. Park, K. Matsuo, N. Aizawa, and T. Yasuda*
    Adv. Funct. Mater. 2018, 28, 1802031.
    DOI: 10.1002/adfm.201802031
    Ranked in the Top 10% Most Downloaded Papers (2018-2019) in Advanced Functional Materials!

  4. Oligothiophene–Indandione-Linked Narrow-Band Gap Molecules: Impact of π-Conjugated Chain Length on Photovoltaic Performance
    H. Komiyama,* T. To, S. Furukawa, Y. Hidaka, W. Shin, T. Ichikawa, R. Arai, and T. Yasuda*
    ACS Appl. Mater. Interfaces 2018, 10, 11083-11093.
    DOI: 10.1021/acsami.8b01233

  5. Molecular Engineering of Phosphacycle-Based Thermally Activated Delayed Fluorescence Materials for Deep-Blue OLEDs
    J. Lee,* N. Aizawa, and T. Yasuda*
    J. Mater. Chem. C 2018, 6, 3578-3583.
    DOI: 10.1039/C7TC05709A

  6. Highly Efficient Red–Orange Delayed Fluorescence Emitters Based on Strong π-Accepting Dibenzophenazine and Dibenzoquinoxaline Cores: Toward a Rational Pure-Red OLED Design
    R. Furue, K. Matsuo, Y. Ashikari, H. Ooka, N. Amanokura, and T. Yasuda*
    Adv. Optical Mater. 2018, 6, 1701147.
    DOI: 10.1002/adom.201701147
    Ranked in the top 5 most downloaded Advanced Optical Materials papers of the month!
    Selected as Best Advanced Optical Materials 2018!
    Ranked in the Top Downloaded Article 2017-2018 in Advanced Optical Materials!

  7. High-Mobility Regioisomeric Thieno[f,f‘]bis[1]benzothiophenes: Remarkable Effect of Syn/Anti Thiophene Configuration on Optoelectronic Properties, Self-Organization, and Charge-Transport Functions in Organic Transistors
    T. Oyama, T. Mori, T. Hashimoto, M. Kamiya, T. Ichikawa, H. Komiyama, Y. S. Yang, and T. Yasuda*
    Adv. Electron. Mater. 2018, 4, 1700390.
    DOI: 10.1002/aelm.201700390

2017

  1. Isobenzofuranone- and Chromone-Based Blue Delayed Fluorescence Emitters with Low Efficiency Roll-Off in Organic Light-Emitting Diodes
    J. Lee, N. Aizawa, and T. Yasuda*
    Chem. Mater. 2017, 29, 8012-8020.
    DOI: 10.1021/acs.chemmater.7b03371

  2. Spin-Dependent Exciton Funneling to a Dendritic Fluorophore Mediated by a Thermally Activated Delayed Fluorescence Material as an Exciton-Harvesting Host
    N. Aizawa,* S. Shikita, and T. Yasuda*
    Chem. Mater. 2017, 29, 7014-7022.
    DOI: 10.1021/acs.chemmater.7b02606

  3. Enhancing Thermally Activated Delayed Fluorescence Characteristics by Intramolecular B–N Coordination in a Phenylpyridine-Containing Donor–Acceptor π-System
    K. Matsuo* and T. Yasuda*
    Chem. Commun. 2017, 53, 8723-8726.
    DOI: 10.1039/C7CC04875K

  4. π-Conjugated Naphthodithiophene Homopolymers Bearing Alkyl/Alkylthio-Thienyl Substituents: Facile Synthesis Using Hexamethylditin and Their Charge-Transport and Photovoltaic Properties
    H. Komiyama,* T. Oyama, T. Mori, and T. Yasuda*
    Polym. J. 2017, 49, 729-734.
    DOI: 10.1038/pj.2017.45

  5. Solution-Grown Unidirectionally Oriented Crystalline Thin Films of a U-Shaped Thienoacene-Based Semiconductor for High-Performance Organic Field-Effect Transistors
    T. Mori, T. Oyama, H. Komiyama, and T. Yasuda*
    J. Mater. Chem. C 2017, 5, 5872-5876.
    DOI: 10.1039/C7TC01836C

  6. Effects of Chalcogen Atom Substitution on the Optoelectronic and Charge-Transport Properties in Picene-Type π-Systems
    T. Oyama, Y. S. Yang, K. Matsuo, and T. Yasuda*
    Chem. Commun. 2017, 53, 3814-3817.
    DOI: 10.1039/C7CC01292F
    Highlighted as a Back Cover!

  7. Tunable Full-Color Electroluminescence from All-Organic Optical Upconversion Devices by Near-Infrared Sensing
    H. Tachibana, N. Aizawa, Y. Hidaka, and T. Yasuda*
    ACS Photonics 2017, 4, 223-227.
    DOI: 10.1021/acsphotonics.6b00964

  8. Cyclohexane-Coupled Bipolar Host Materials with High Triplet Energies for Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence
    I. S. Park, H. Seo, H. Tachibana, J. U. Kim, J. Zhang, S. M. Son,* and T. Yasuda*
    ACS Appl. Mater. Interfaces 2017, 9, 2693-2700.
    DOI: 10.1021/acsami.6b13002

  9. Thermally Activated Delayed Fluorescence Properties of Regioisomeric Xanthone-Based Twisted Intramolecular Charge-Transfer Luminophores
    J. Lee, I. S. Park, and T. Yasuda*
    Bull. Chem. Soc. Jpn. 2017, 90, 231-236.
    DOI: 10.1246/bcsj.20160380
    Highlighted as a Selected Paper!

  10. Versatile Molecular Functionalization for Inhibiting Concentration Quenching of Thermally Activated Delayed Fluorescence
    J. Lee, N. Aizawa, M. Numata, C. Adachi, and T. Yasuda*
    Adv. Mater. 2017, 29, 1604856.
    DOI: 10.1002/adma.201604856

  11. Pyrimidine-Based Twisted Donor–Acceptor Delayed Fluorescence Molecules: A New Universal Platform for Highly Efficient Blue Electroluminescence
    I. S. Park, H. Komiyama, and T. Yasuda*
    Chem. Sci. 2017, 8, 953-960.
    DOI: 10.1039/C6SC03793C
    Highlighted in Chemistry World!

  12. Tetrathienoanthracene-Based π-Extended Narrow-Band-Gap Molecules: Synthesis, Physicochemical, and Photovoltaic Properties
    H. Komiyama,* C. Adachi, and T. Yasuda*
    Chem. Lett. 2017, 46, 29-31.
    DOI: 10.1246/cl.160858

  13. Aggregation-Induced Delayed Fluorescence from Phenothiazine-Containing Donor–Acceptor Molecules for High-Efficiency Non-Doped Organic Light-Emitting Diodes
    N. Aizawa,* C.-J. Tsou, I. S. Park, and T. Yasuda*
    Polym. J. 2017, 49, 197-202.
    (Special Issue: Photo- and Electro-Functional Polymers and Molecular Assemblies; Ed: T. Yasuda, W.-C. Chen, and T. Kato)
    DOI: 10.1038/pj.2016.82

2016

  1. Controlling Open-Circuit Voltage in Organic Solar Cells by Terminal Fluoro-Functionalization of Narrow-Bandgap π-Conjugated Molecules
    S. Furukawa, H. Komiyama, and T. Yasuda*
    Phys. Chem. C 2016, 120, 21235-21241.
    DOI: 10.1021/acs.jpcc.6b06758

  2. High-Performance Blue Organic Light-Emitting Diodes with 20% External Quantum Efficiency Based on Pyrimidine-Containing Thermally Activated Delayed Fluorescence Emitters
    I. S. Park, J. Lee, and T. Yasuda*
    J. Mater. Chem. C 2016, 4, 7911-7916.
    DOI: 10.1039/C6TC02027E
    Highlighted as a Front Cover!

  3. Star-Shaped and Linear π-Conjugated Oligomers Consisting of a Tetrathienoanthracene Core and Multiple Diketopyrrolopyrrole Arms for Organic Solar Cells
    H. Komiyama,* C. Adachi, and T. Yasuda*
    Beilstein J. Org. Chem. 2016, 12, 1459-1466.
    (Thematic Series: Organo Photovoltaics; Ed: D. J. Jones and W. W. H. Wong)
    DOI: 10.3762/bjoc.12.142

  4. Aggregation-Induced Delayed Fluorescence Based on Donor/Acceptor-Tethered Janus Carborane Triads: Unique Photophysical Properties of Nondoped OLEDs
    R. Furue, T. Nishimoto, I. S. Park, J. J. Lee, and T. Yasuda*
    Angew. Chem. Int. Ed. 2016, 55, 7171-7175.
    DOI: 10.1002/anie.201603232
    Highlighted in Cutting-Edge Chemistry by the American Chemical Society (ACS)!

  5. High-Efficiency Blue Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence from Phenoxaphosphine and Phenoxathiin Derivatives
    S. Y. Lee, C. Adachi, and T. Yasuda*
    Adv. Mater. 2016, 28, 4626-4631.
    DOI: 10.1002/adma.201506391
    Highlighted as a Frontispiece!

  6. Photon-Absorbing Charge-Bridging States in Organic Bulk Heterojunctions Consisting of Diketopyrrolopyrrole Derivatives and PCBM
    M. Fujii,* W. Shin, T. Yasuda, and K. Yamashita*
    Phys. Chem. Chem. Phys. 2016, 18, 9514-9523.
    DOI: 10.1039/C5CP06183K

  7. Thermally Activated Delayed Fluorescence Polymers for Efficient Solution-Processed Organic Light-Emitting Diodes
    S. Y. Lee, T. Yasuda,* H. Komiyama, J. Lee, and C. Adachi*
    Adv. Mater. 2016, 28, 4019-4024.
    DOI: 10.1002/adma.201505026

  8. Full-Color Delayed Fluorescence Materials Based on Wedge-Shaped Phthalonitriles and Dicyanopyrazines: Systematic Design, Tunable Photophysical Properties, and OLED Performance
    I. S. Park, S. Y. Lee, C. Adachi, and T. Yasuda*
    Adv. Funct. Mater. 2016, 26, 1813-1821.
    DOI: 10.1002/adfm.201505106

  9. A Phenazaborin-Based High-Efficiency Blue Delayed Fluorescence Material
    I. S. Park, M. Numata, C. Adachi,* and T. Yasuda*
    Bull. Chem. Soc. Jpn. 2016, 89, 375-377.
    DOI: 10.1246/bcsj.20150399
    Highlighted as a Selected Paper!

2015

  1. Organic Light-Emitting Diodes Based on Donor-Substituted Phthalimide and Maleimide Fluorophores
    M. E. Jang, T. Yasuda,* J. Lee, S. Y. Lee, and C. Adachi*
    Chem. Lett. 2015, 44, 1248-1250.
    DOI: 10.1246/cl.150454

  2. Highly Efficient Electroluminescence from Purely Organic Donor–Acceptor Systems
    K. Shizu, J. Lee, H. Tanaka, H. Nomura, T. Yasuda, H. Kaji, and C. Adachi*
    Pure Appl. Chem. 2015, 87, 627-638.
    DOI: 10.1515/pac-2015-0301

  3. High Efficiency Pure Blue Thermally Activated Delayed Fluorescence Molecules Having 10H-Phenoxaborin and Acridan Units
    M. Numata, T. Yasuda,* and C. Adachi*
    Chem. Commun. 2015, 51, 9443-9446.
    DOI: 10.1039/C5CC00307E

  4. Tetraphenyldibenzoperiflanthene as Sensitizer for Enhancing the Performance in Dinaphthothienothiophene-Based Photovoltaics with and without Fullerene
    Y. Zheng, W. J. Potscavage Jr., J. Zhang, T. Yasuda, B. Wei, and C. Adachi*
    Synth. Met. 2015, 205, 121-126.
    DOI: 10.1016/j.synthmet.2015.04.002

  5. Nearly 100% Internal Quantum Efficiency in Undoped Electroluminescent Devices Employing Pure Organic Emitters
    Q. Zhang, D. Tsang, H. Kuwabara, Y. Hatae, B. Li, T. Takahashi, S. Y. Lee, T. Yasuda, and C. Adachi*
    Adv. Mater. 2015, 27, 2096-2100.
    DOI: 10.1002/adma.201405474

  6. X-Shaped Benzoylbenzophenone Derivatives with Crossed Donors and Acceptors for Highly Efficient Thermally Activated Delayed Fluorescence
    S. Y. Lee, T. Yasuda,* I. S. Park, and C. Adachi*
    Dalton Trans. 2015, 44, 8356-8359.
    (Themed Issue: Luminescent Complexes and Materials for Light-Emitting Devices)
    DOI: 10.1039/C4DT03608E
    Highlighted as an Inside Front Cover!

  7. Controlled Emission Color and Singlet-Triplet Energy Gap of Dihydrophenazine-Based Thermally Activated Delayed Fluorescence Emitters
    J. Lee, K. Shizu, H. Tanaka, H. Nakanotani, T. Yasuda, H. Kaji, and C. Adachi*
    J. Mater. Chem. C 2015, 4, 2175-2181.
    DOI: 10.1039/C4TC02530J

2014

  1. π-Extended Narrow-Bandgap Diketopyrrolopyrrole-Based Oligomers for Solution-Processed Inverted Organic Solar Cells
    W. Shin, T. Yasuda,* Y. Hidaka, G. Watanabe, R. Arai, K. Nasu, T. Yamaguchi, W. Murakami, K. Makita, and C. Adachi*
    Adv. Energy Mater. 2014, 4, 1400879.
    DOI: 10.1002/aenm.201400879
    Highlighted as a Back Cover!

  2. Efficiency Enhancement of Organic Light-Emitting Diodes Incorporating a Highly Oriented Thermally Activated Delayed Fluorescence Emitter
    C. Mayr, S. Y. Lee, T. D. Schmidt, T. Yasuda, C. Adachi, and W. Brütting*
    Adv. Funct. Mater. 2014, 24, 5232-5239.
    DOI: 10.1002/adfm.201400495

  3. High Efficiency Light-Emitting Diodes with Fluorescent Emitters
    H. Nakanotani, T. Higuchi, T. Furukawa, K. Masui, K. Morimoto, M. Numata, H. Tanaka, Y. Sagara, T. Yasuda, and C. Adachi*
    Nature Commun. 2014, 5, 4016.
    DOI: 10.1038/ncomms5016

  4. Luminous Butterflies: Efficient Exciton Harvesting by Benzophenone Derivatives for Full-Color Delayed Fluorescence OLEDs
    S. Y. Lee, T. Yasuda,* Y. S. Yang, Q. Zhang, and C. Adachi*
    Angew. Chem. Int. Ed. 2014, 53, 6520-6524.
    DOI: 10.1002/ange.201402992

  5. Thermally Activated Delayed Fluorescence from a Spiro-Diazafluorene Derivative
    H. Ohkuma, T. Nakagawa, K. Shizu, T. Yasuda,* and C. Adachi*
    Chem. Lett. 2014, 43, 1017–1019.
    DOI: 10.1246/cl.140360

  6. Donor–Acceptor Structured 1,4-Diazatriphenylene Derivatives Exhibiting Thermally Activated Delayed Fluorescence: Design and Synthesis, Photophysical Properties and OLED Characteristics
    T. Takahashi, K. Shizu, T. Yasuda,* K. Togashi, and C. Adachi*
    Sci. Technol. Adv. Mater. 2014, 15, 034202.
    DOI: 10.1088/1468-6996/15/3/034202

  7. Light-Emitting Organic Field-Effect Transistors Based on Highly Luminescent Single Crystals of Thiophene/Phenylene Co-Oligomers
    T. Komori, H. Nakanotani, T. Yasuda,* and C. Adachi*
    J. Mater. Chem. C 2014, 2, 4918–4921.
    DOI: 10.1039/C4TC00164H

  8. Self-Assembly, Physicochemical, and Field-Effect Transistor Properties of Solution-Crystallized Organic Semiconductors Based on π-Extended Dithieno[3,2-b:2′,3′-d]thiophenes
    H. Mieno, T. Yasuda,* Y. S. Yang, and C. Adachi*
    Chem. Lett. 2014, 43, 293–295.
    DOI: 10.1246/cl.130914

  9. Polymorphism in 9,9-Diarylfluorene-Based Organic Semiconductors: Influence on Optoelectronic Functions
    J. Y. Kim, T. Yasuda,* Y. S. Yang, N. Matsumto, and C. Adachi*
    Chem. Commun. 2014, 50, 1523–1526.
    DOI: 10.1039/C3CC48566H
    Highlighted as an Inside Front Cover!

  10. A Six-Carbazole-Decorated Cyclophosphazene as a Host with High Triplet Energy to Realize Efficient Delayed-Fluorescence OLEDs
    T. Nishimoto, T. Yasuda,* S. Y. Lee, R. Kondo, and C. Adachi*
    Mater. Horiz. 2014, 1, 264–269.
    DOI: 10.1039/C3MH00079F

2013

  1. A Highly Luminescent Spiro-Anthracenone-Based Organic Light-Emitting Diode through Thermally Activated Delayed Fluorescence
    K. Nasu, T. Nakagawa, H. Nomura, C.-J. Lin, C.-H. Cheng, M.-R. Tseng, T. Yasuda, and C. Adachi*
    Chem. Commun. 2013, 49, 10385-10387.
    DOI: 10.1039/C3CC44179B

  2. High Performance Organic Field-Effect Transistors Based on Single-Crystal Microribbons and Microsheets of Solution-Processed Dithieno[3,2-b:2′,3′-d]thiophene Derivatives
    Y. S. Yang, T. Yasuda,* H. Kakizoe, H. Mieno, H. Kino, Y. Tateyama, and C. Adachi*
    Chem. Commun. 2013, 49, 6483-6485.
    DOI: 10.1039/C3CC42114G
    Highlighted as an Inside Back Cover!

  3. Self-Organizing Mesomorphic Diketopyrrolopyrrole Derivatives for Efficient Solution-Processed Organic Solar Cells
    W. Shin, T. Yasuda,* G. Watanabe, Y. S. Yang, and C. Adachi*
    Chem. Mater. 2013, 25, 2549-2556.
    DOI: 10.1021/cm401244x

  4. Oxadiazole- and Triazole-Based Highly-Efficient Thermally-Activated Delayed Fluorescence Emitters for Organic Light-Emitting Diodes
    J. Lee, K. Shizu, H. Tanaka, H. Nomura, T. Yasuda, and C. Adachi*
    J. Mater. Chem. C 2013, 1, 4599–4604.
    DOI: 10.1039/C3TC30699B

  5. Molecular Design of High-Molecular-Orientation Electron-Transport Materials and Application to Organic Light-Emitting Diodes
    K. Togashi, Y. Sagara, T. Yasuda, and C. Adachi*
    Chem. Lett. 2013, 42, 651–653.
    DOI: 10.1246/cl.130150

  6. A Host Material Consisting of A Phosphinic Amide Directly Linked Donor–Acceptor Structure for Efficient Blue Phosphorescent Organic Light-Emitting Diodes
    A. Wada, T. Yasuda,* Q. Zhang, Y. S. Yang, I. Takasu, S. Enomoto, and C. Adachi*
    J. Mater. Chem. C 2013, 1, 2404–2407.
    DOI: 10.1039/C3TC00939D
    Selected as Top 10 most-read Journal of Materials Chemistry C articles!

  7. Effects of Intramolecular Donor–Acceptor Interactions on Bimolecular Recombination in Small-Molecule Organic Photovoltaic Cells
    M. Hirade, T. Yasuda, and C. Adachi*
    Phys. Chem. C 2013, 117, 4986–4991.
    DOI: 10.1021/jp400386q

  8. Triphenylene-Based Host Materials for Low-Voltage and Highly Efficient Red Phosphorescent Organic Light-Emitting Diodes
    K. Togashi, T. Yasuda, and C. Adachi,*
    Chem. Lett. 2013, 42, 383–385.
    DOI: 10.1246/cl.121247

  9. Bifunctional Star-Burst Amorphous Molecular Materials for OLEDs: Achieving Highly Efficient Solid-State Luminescence and Carrier Transport Induced by Spontaneous Molecular Orientation
    J. Y. Kim, T. Yasuda,* Y. S. Yang, and C. Adachi*
    Adv. Mater. 2013, 25, 2666–2671.
    DOI: 10.1002/adma.201204902
    Highlighted as an Inside Front Cover!

Review papers

  1. Indoor Photovoltaic Energy Harvesting Based on Semiconducting π-Conjugated Polymers and Oligomeric Materials toward Future IoT Applications
    S. Hwang* and T. Yasuda*
    Polym. J. 2023, 55, in press. [Open Access]
    (Special Issue: π-Conjugated Polymers; Ed: T. Yasuda, I. Osaka, K. Tanaka, and K. Tanaka)
    DOI: 10.1038/s41428-022-00727-8

  2. Narrowband Emissive Thermally Activated Delayed Fluorescence Materials
    H. J. Kim* and T. Yasuda*
    Adv. Optical Mater.2022, 10, 2201714. [Open Access]
    DOI: 10.1002/adom.202201714
    Highlighted in Advanced Optical Materials Hall of Fame!
    Highlighted as a Front Cover!

  3. Design of Thermally Activated Delayed Fluorescence Materials for Organic Light-Emitting Diodes
    N. Aizawa, I. S. Park, and T. Yasuda
    AAPPS Bull.2016, 26, 9-19.

  4. Self-Assembly of Functional Columnar Liquid Crystals
    T. Kato,* T. Yasuda, Y. Kamikawa, and M. Yoshio
    Chem. Commun.2009, 729-739.
    DOI: 10.1039/B816624B

Book chapters & Comments

  1. 凝集誘起遅延蛍光
    安田 琢麿
    高分子, Vol. 71, No. 9, pp. 469-471 (2022)

  2. Boron-Containing Thermally Activated Delayed Fluorescence Materials for High-Efficiency OLEDs
    I. S. Park and T. Yasuda
    World Scientific Handbook of Organic Optoelectronic Devices; Volume 3: OLEDs (Ed: D. Ma), Chap.
    2, pp. 61-78, World Scientific (2022)

  3. 高速スピン変換可能な新しい有機発光材料の創製:真に高効率な有機発光ダイオードの実現に向けて
    安田 琢麿
    Organometallic News, Vol. 2019, No. 2, pp. 42-47 (2019)

  4. Thermally Activated Delayed Fluorescence (TADF) Materials for Organic Light-Emitting Devices
    K. Matsuo, N. Aizawa, and T. Yasuda
    Light-Active Functional Organic Materials (Ed: H. Yamada and S. Yagai), Chap. 8, pp. 151-171,
    Pan Stanford Publishing (2019)

  5. Organic Light-Emitting Diodes (OLEDs): Materials, Photophysics, and Device Physics
    C. Adachi, S. Lee, T. Nakagawa, K. Shizu, K. Goushi, T. Yasuda, and W. J. Potscavage Jr.
    Organic Electronics Materials and Devices (Ed: S. Ogawa), Chap. 2, pp. 43-73, Springer (2015)

  6. 高効率熱活性化遅延蛍光材料の開発と有機ELへの展開
    安田 琢麿・李 世淵・安達 千波矢
    科学と工業, Vol. 88, No. 10, pp. 363-367 (2014)

  7. Redox-Active (Electrochromic) Liquid Crystals
    K. Isoda, T. Yasuda, M. Funahashi, and T. Kato
    Handbook of Liquid Crystals, 2nd edition (Ed: J. W. Goodby et al.), Vol. 8, Chap. 22, Wiley-VCH,
    Germany (2014)

  8. Liquid Crystal Semiconductors: Oligothiophene and Related Materials
    M. Funahashi, T. Yasuda, and T. Kato
    Handbook of Liquid Crystals, 2nd edition (Ed: J. W. Goodby et al.), Vol. 8, Chap. 21, Wiley-VCH,
    Germany (2014)

  9. Liquid-Crystalline Catenanes and Rotaxanes
    J. Sakuda, T. Yasuda, and T. Kato
    Handbook of Liquid Crystals, 2nd edition (Ed: J. W. Goodby et al.), Vol. 5, Chap. 11, Wiley-VCH,
    Germany (2014)

  10. Advanced Systems of Supramolecular Liquid Crystals
    T. Yasuda and T. Kato
    Supramolecular Soft Matter: Applications in Materials and Organic Electronics (Ed: T. Nakanishi), Chap. 14, Wiley (2011)

Awards

  1. 令和4年度 九州大学共同研究等活動表彰
    安田 琢麿 (2022年11月)

  2. 九州大学第13回工学研究企画セミナー 優秀発表賞
    Minlang Yang (2022年1月)
    “Efficient, Narrowband, and Full-Color Organic Light-Emitting Diodes”

  3. 令和3年度 九州大学共同研究等活動表彰
    安田 琢麿 (2021年11月)

  4. 第70回高分子討論会 ポスター賞
    免田 大樹 (2021年10月)
    “エステルおよびフッ素修飾ポリチオフェンを基盤とする高効率有機薄膜太陽電池”

  5. 第58回化学関連支部合同九州大会 若手研究者奨励賞(物理化学)
    田﨑 博 (2021年7月)
    “エステル基を導入した遅延蛍光材料の開発”

  6. 令和2年度 九州大学共同研究等活動表彰
    安田 琢麿 (2020年11月)

  7. 令和2年度 九州大学 応用化学部門機能教室・テーマ発表試問会 優秀発表賞
    田﨑 博 (2020年9月)
    “プロペラキラリティを有する有機発光材料の創製”

  8. 令和2年度 九州大学 応用化学部門機能教室・テーマ発表試問会 優秀発表賞
    免田 大樹 (2020年9月)
    “エステルおよびハロゲン修飾ポリチオフェンを基盤とする高効率光電変換”

  9. 令和元年度 九州大学 応用化学部門機能教室・修士論文試問会 優秀発表賞
    佐藤 成実 (2020年2月)
    “含ラクタム縮環骨格を基盤とする有機半導体の開発と太陽電池への応用”

  10. 令和元年度 九州大学 応用化学部門機能教室・修士論文試問会 優秀発表賞
    小路口 由佳 (2020年2月)
    “π拡張ヘテロアセンの合成と電荷輸送特性”

  11. 令和元年度 九州大学 応用化学部門機能教室・卒業研究試問会 優秀発表賞
    免田 大樹 (2020年3月)
    “直接的アリール化重縮合によるポリチオフェン類の合成と物性”

  12. 令和元年度 九州大学 応用化学部門機能教室・卒業研究試問会 優秀発表賞
    田﨑 博 (2020年2月)
    “熱活性化遅延蛍光におけるアクセプターユニットの置換基効果”

  13. The Asian and Oceanian Photochemistry Association (APA) Prize for Young Scientist 2019
    In Seob Park (2019年11月)
    “Rational Molecular Design for Full-Exciton Harvesting Thermally Activated Delayed Fluorescence Emitters in Pure Organic Molecules”

  14. Publons Global Peer Review Awards 2019
    安田 琢麿 (2019年9月)

  15. 令和元年度 九州大学 応用化学部門機能教室・テーマ発表試問会 優秀発表賞
    清永 紀行 (2019年8月)
    “レドックス活性有機半導体を利用したエレクトロクロミズム”

  16. 第29回万有福岡シンポジウム ポスター賞(有機合成化学協会九州山口支部ポスター賞)
    森 達哉 (2019年5月)
    “U字型チエノアセンの自己組織化構造の制御と溶液プロセスによる高性能有機電界トランジスタの開発”

  17. 平成30年度 九州大学 応用化学部門機能教室・テーマ発表試問会 優秀発表賞
    佐藤 成実 (2018年8月)
    “含ラクタム縮環骨格を基盤とする狭バンドギャップ有機半導体の合成と有機太陽電池への応用”

  18. 平成30年度 九州大学 応用化学部門機能教室・テーマ発表試問会 最優秀発表賞
    小路口 由佳 (2018年8月)
    “高速電荷輸送を指向した多環縮環チエノアセン系有機半導体材料の開発”

  19. ICSM 2018 Best Poster Award
    Yuka Kojiguchi(2018年7月)
    “Synthesis and Charge-Transport Properties of Thiophene-Fused Nanographene for Organic Field-Effect Transistors”

  20. ICSM 2018 Best Poster Award
    Narumi Sato(2018年7月)
    “Development of Narrow-Bandgap Molecules Based on Lactam-Containing Fused Aromatic Systems and Their Application in Organic Solar Cells”

  21. 第55回化学関連支部合同九州大会 若手研究者奨励賞 物理化学(ポスター賞)
    Hanqing Meng (2018年6月)
    “Highly Efficient Thermally Activated Delayed Fluorescence Materials Based on Aromatic Ketones”

  22. 第55回化学関連支部合同九州大会 若手研究者奨励賞 物理化学(ポスター賞)
    小路口 由佳 (2018年6月)
    “チオフェン縮環ナノグラフェン系有機半導体材料の合成と電荷輸送特性”

  23. 第21回(平成29年度) 丸文学術賞
    安田 琢麿 (2018年3月)
    “有機半導体分子の設計・集積化技術と発光素子応用の研究”

  24. 平成29年度 九州大学 応用化学部門機能教室・卒業研究試問会 優秀発表賞
    佐藤 成実 (2018年3月)
    “含ラクタム縮環骨格を基盤とする狭バンドギャップ有機半導体の合成と有機太陽電池への応用”

  25. 平成29年度 九州大学 応用化学部門機能教室・卒業研究試問会 最優秀発表賞
    小路口 由佳 (2018年3月)
    “チオフェン縮環ナノグラフェン系有機半導体材料の合成と電荷輸送特性”

  26. 平成29年度 九州大学 応用化学部門機能教室・修士論文発表試問会 優秀発表賞
    森 達哉 (2018年3月)
    “拡張π共役系を有する有機半導体の設計、構造制御、および電荷輸送特性評価”

  27. 第54回化学関連支部合同九州大会 若手研究者奨励賞 物理化学(ポスター賞)
    敷田 蒼 (2017年7月)
    “デンドリマー型蛍光分子へのスピン選択的エネルギー移動を利用した塗布型有機EL素子”

  28. 第27回万有福岡シンポジウム ベストポスター賞
    古江 龍侑平 (2017年6月)
    o-カルボラン骨格を基軸とした凝集誘起遅延蛍光材料の開発とノンドープ型有機ELへの応用”

  29. 平成28年度 九州大学 応用化学部門機能教室・修士論文発表試問会 最優秀発表賞
    大山 達也 (2017年2月)
    “π拡張ヘテロアセン類の設計・合成及び高性能有機電界効果トランジスタへの展開”

  30. ExOM&CMS第1回合同シンポジウム 優秀ポスター発表賞
    森 達哉(2017年1月)
    “Solution-Processed Organic Field-Effect Transistors Based on Highly Ordered Crystalline Thin Films”

  31. IPC 2016 Young Scientist Poster Award
    Hiroki Tachibana(2016年12月)
    “Full-Color Tunable Organic Upconversion Light-Emitting Devices”

  32. 平成28年度 九州大学研究活動表彰
    安田 琢麿 (2016年11月)

  33. 平成28年度 九州大学 応用化学部門機能教室・中間発表(英語)試問会 最優秀発表賞
    大山 達也 (2016年8月)
    “High Performance Organic Field-Effect Transistors Based on Solution-Processable π-Extended Thienoacenes”

  34. 平成28年度 九州大学 応用化学部門機能教室・テーマ発表試問会 最優秀発表賞
    森 達哉 (2016年8月)
    “高共平面性を有する有機半導体ポリマーの分子配向制御と電荷輸送特性の評価”

  35. 第53回化学関連支部合同九州大会 若手研究者奨励賞 物理化学(ポスター賞)
    大山 達也 (2016年7月)
    “チエノアセンによる溶液法を用いた高性能有機電界効果トランジスタの開発”

  36. 第53回化学関連支部合同九州大会 若手研究者奨励賞 物理化学(ポスター賞)
    森 達哉 (2016年7月)
    “溶液プロセスを用いて作製したチエノアセン系有機半導体結晶薄膜の電荷輸送特性”

  37. 第53回化学関連支部合同九州大会 若手研究者奨励賞 物理化学(ポスター賞)
    古江 龍侑平 (2016年7月)
    “ホウ素クラスター骨格を有する有機半導体分子の特異な発光特性”

  38. 第29回安藤博記念学術奨励賞
    相澤 直矢 (2016年6月)
    “多層構造を有する高効率塗布型有機EL素子の開発”

  39. 平成27年度 九州大学 応用化学部門機能教室・卒業研究試問会 優秀発表賞
    森 達哉 (2016年3月)
    “溶液法を用いて作製したヘテロアセン系有機半導体結晶薄膜の電荷輸送特性”

  40. 平成27年度 九州大学研究活動表彰
    安田 琢麿 (2015年11月)

  41. 平成27年度 九州大学 応用化学部門機能教室・テーマ説明試問会 最優秀発表賞
    大山 達也 (2015年8月)
    “π拡張ヘテロアセン類の設計・合成及び高移動度有機トランジスタの開発”

  42. 第52回化学関連支部合同九州大会 若手研究者奨励賞 物理化学(ポスター賞)
    橘 弘樹 (2015年6月)
    “ドナー・アクセプターハイブリッド型分子を用いた有機メモリの開発”

  43. 平成27年度 科学技術分野の文部科学大臣表彰 若手科学者賞
    安田 琢麿 (2015年4月)
    “有機半導体分子の高度集積と有機電子デバイスに関する研究”

  44. 平成26年度 九州大学 応用化学部門機能教室・卒業研究試問会 優秀発表賞
    大山 達也 (2015年3月)
    “π拡張チエノアセン類の設計・合成及び有機単結晶トランジスタへの展開”

  45. 平成26年度 九州大学研究活動表彰
    安田 琢麿 (2014年11月)

  46. MRS Spring Meeting Poster Award
    Sae Youn Lee(2014年4月)
    “Molecular design of butterfly-shaped benzophenone derivatives and their application to OLEDs displaying efficient thermally activated delayed fluorescence”

  47. 日本化学会 進歩賞
    安田 琢麿 (2014年3月)
    “有機半導体分子の自己組織化を活用した高機能電子デバイスの開発”

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Yasuda Lab.

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Inamori Center, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

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