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Fujita T, Fukuda T, Suzuki N, Ichikawa J. Rapid Synthesis of Fused Polycyclic Heteroaromatics via Successive Vinylic/Aromatic C–F Bond Activation. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200600] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Takeshi Fujita
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Takuya Fukuda
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Naoto Suzuki
- University of Tsukuba: Tsukuba Daigaku Division of Chemistry JAPAN
| | - Junji Ichikawa
- University of Tsukuba Department of Chemistry 1-1-1 Tennodai 305-8571 Tsukuba JAPAN
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2
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Cho NH, Lee JY, Kim OY, Hwang SH. Regioisomer effects of dibenzofuran-based bipolar host materials on yellow phosphorescent OLED device performance. NEW J CHEM 2020. [DOI: 10.1039/c9nj05249f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Four regioisomers were synthesized for use as bipolar host materials for phosphorescent organic light-emitting diodes (PhOLEDs) by classic cross-coupling reactions using cyanofluorene and fused dibenzofuran and were readily purified.
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Affiliation(s)
- Nam Hee Cho
- Department of Polymer Science & Engineering
- Materials Chemistry & Engineering Laboratory
- Dankook University
- Yongin
- Korea
| | - Jun Yeob Lee
- School of Chemical Engineering
- Sungkyunkwan University
- Suwon
- Korea
| | - Oh Young Kim
- Department of Polymer Science & Engineering
- Materials Chemistry & Engineering Laboratory
- Dankook University
- Yongin
- Korea
| | - Seok-Ho Hwang
- Department of Polymer Science & Engineering
- Materials Chemistry & Engineering Laboratory
- Dankook University
- Yongin
- Korea
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3
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Synthesis of Tri- and Disubstituted Fluorenols and Derivatives Thereof Using Catalytic [2+2+2] Cyclotrimerization. Catalysts 2019. [DOI: 10.3390/catal9110942] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
A method for regioselective synthesis of 2,4-disubstituted and more highly substituted fluorenols using catalytic [2+2+2]cyclotrimerization of mono- and disubstituted diynes with terminal alkynes was explored. In the former case, the preferential formation of the 2,4-regioisomers was achieved in the presence of Cp*Ru(cod)Cl, whereas Rh-based catalysts tended to provide 3,4-regioisomers as the major products. The 2,4-disubstituted fluorenols were converted into the corresponding 9,9′-spirobifluorene derivatives and their structural and photophysical properties were evaluated.
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Poriel C, Sicard L, Rault-Berthelot J. New generations of spirobifluorene regioisomers for organic electronics: tuning electronic properties with the substitution pattern. Chem Commun (Camb) 2019; 55:14238-14254. [DOI: 10.1039/c9cc07169e] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
In the present feature article, we present the new generations of spirobifluorenes for organic electronics and we detail the impact of positional isomerism on the electronic properties and device performance.
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Affiliation(s)
- Cyril Poriel
- Univ Rennes
- CNRS
- ISCR-UMR 6226
- F-35000 Rennes
- France
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5
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Quinton C, Thiery S, Jeannin O, Tondelier D, Geffroy B, Jacques E, Rault-Berthelot J, Poriel C. Electron-Rich 4-Substituted Spirobifluorenes: Toward a New Family of High Triplet Energy Host Materials for High-Efficiency Green and Sky Blue Phosphorescent OLEDs. ACS APPLIED MATERIALS & INTERFACES 2017; 9:6194-6206. [PMID: 28111937 DOI: 10.1021/acsami.6b14285] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
We report herein a detailed structure-properties relationship study of the first examples of electron-rich 4-substituted spirobifluorenes for organic electronic applications, namely, 4-phenyl-N-carbazole-spirobifluorene (4-PhCz-SBF) and 4-(3,4,5-trimethoxyphenyl)-spirobifluorene (4-Ph(OMe)3-SBF). The incorporation of the electron-rich moieties in the ortho position of the biphenyl linkage (position C4) induces unique properties, very different from those previously described in the literature for this family of semiconductors. Both dyes can be readily synthesized, possess high triplet energies and excellent thermal stability, and their HOMO energy levels are highly increased compared to those of other 4-substituted SBFs. We also provide in this work the first rationalization of the peculiar fluorescence of 4-substituted SBFs. Finally, the present dyes have been successfully incorporated as host in green and blue phosphorescent organic light-emitting diodes with high performance either for the green (EQE of 20.2%) or the blue color (EQE of 9.6%). These performances are, to the best of our knowledge, among the highest reported to date for 4-substituted SBF derivatives.
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Affiliation(s)
- Cassandre Quinton
- Institut des Sciences Chimiques de Rennes - UMR CNRS 6226, Université Rennes 1 , 35042 Rennes, France
| | - Sébastien Thiery
- Institut des Sciences Chimiques de Rennes - UMR CNRS 6226, Université Rennes 1 , 35042 Rennes, France
| | - Olivier Jeannin
- Institut des Sciences Chimiques de Rennes - UMR CNRS 6226, Université Rennes 1 , 35042 Rennes, France
| | - Denis Tondelier
- LPICM, CNRS, Ecole Polytechnique, Université Paris Saclay , 91128 Palaiseau, France
| | - Bernard Geffroy
- LPICM, CNRS, Ecole Polytechnique, Université Paris Saclay , 91128 Palaiseau, France
- LICSEN, NIMBE, CEA, CNRS, Université Paris-Saclay, CEA Saclay , Gif-sur-Yvette CEDEX 91191, France
| | - Emmanuel Jacques
- UMR CNRS 6164-Institut d'Électronique et des Télécommunications de Rennes- Département Microélectronique & Microcapteurs, Bât. 11B, Université Rennes 1 , Campus de Beaulieu, Rennes CEDEX 35042, France
| | - Joëlle Rault-Berthelot
- Institut des Sciences Chimiques de Rennes - UMR CNRS 6226, Université Rennes 1 , 35042 Rennes, France
| | - Cyril Poriel
- Institut des Sciences Chimiques de Rennes - UMR CNRS 6226, Université Rennes 1 , 35042 Rennes, France
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6
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Xue MM, Huang CC, Yuan Y, Zhang YX, Fung MK, Liao LS. A novel electron-acceptor moiety as a building block for efficient donor-acceptor based fluorescent organic lighting-emitting diodes. Chem Commun (Camb) 2016; 53:263-265. [PMID: 27928560 DOI: 10.1039/c6cc09486d] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new electron-withdrawing moiety (BFPz) has been used for the first time as an acceptor in OLEDs and its corresponding core unit (2-Br-BFPz) was synthesized. Combined with an electron-donating moiety triphenylamine, a novel fluorescent material with a D-A structure named TPA-BFPz was synthesized. Encouragingly, the EQE values of non-doped and doped blue OLEDs reach 3.68% and 4.42%, respectively.
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Affiliation(s)
- Miao-Miao Xue
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
| | - Chen-Chao Huang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
| | - Yi Yuan
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
| | - Ye-Xin Zhang
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
| | - Man-Keung Fung
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
| | - Liang-Sheng Liao
- Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Institute of Functional Nano & Soft Materials (FUNSOM) & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, P. R. China.
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7
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Jhulki S, Seth S, Ghosh A, Chow TJ, Moorthy JN. Benzophenones as Generic Host Materials for Phosphorescent Organic Light-Emitting Diodes. ACS APPLIED MATERIALS & INTERFACES 2016; 8:1527-1535. [PMID: 26690799 DOI: 10.1021/acsami.5b11232] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Despite the fact that benzophenone has traditionally served as a prototype molecular system for establishing triplet state chemistry, materials based on molecular systems containing the benzophenone moiety as an integral part have not been exploited as generic host materials in phosphorescent organic light-emitting diodes (PhOLEDs). We have designed and synthesized three novel host materials, i.e., BP2-BP4, which contain benzophenone as the active triplet sensitizing molecular component. It is shown that their high band gap (3.91-3.93 eV) as well as triplet energies (2.95-2.97 eV) permit their applicability as universal host materials for blue, green, yellow, and red phosphors. While they serve reasonably well for all types of dopants, excellent performance characteristics observed for yellow and green devices are indeed the hallmark of benzophenone-based host materials. For example, maximum external quantum efficiencies of the order of 19.2% and 17.0% were obtained from the devices fabricated with yellow and green phosphors using BP2 as the host material. White light emission, albeit with rather poor efficiencies, has been demonstrated as a proof-of-concept by fabrication of co-doped and stacked devices with blue and yellow phosphors using BP2 as the host material.
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Affiliation(s)
- Samik Jhulki
- Department of Chemistry, Indian Institute of Technology , Kanpur 208016, India
| | - Saona Seth
- Department of Chemistry, Indian Institute of Technology , Kanpur 208016, India
| | - Avijit Ghosh
- Institute of Chemistry, Academia Sinica , Taipei, Taiwan 115, Republic of China
| | - Tahsin J Chow
- Institute of Chemistry, Academia Sinica , Taipei, Taiwan 115, Republic of China
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8
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Jhulki S, Chow TJ, Moorthy JN. Benzophenone-imbedded benzoyltriptycene with high triplet energy for application as a universal host material in phosphorescent organic light-emitting diodes (PhOLEDs). NEW J CHEM 2016. [DOI: 10.1039/c6nj00200e] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Benzoyltriptycene functions as a very good host material for blue, green, yellow and red dopants in PhOLED devices.
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Affiliation(s)
- Samik Jhulki
- Department of Chemistry
- Indian Institute of Technology
- Kanpur 208016
- India
| | - Tahsin J. Chow
- Institute of Chemistry
- Academia Sinica
- Taipei
- Republic of China
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9
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Thiery S, Tondelier D, Geffroy B, Jacques E, Robin M, Métivier R, Jeannin O, Rault-Berthelot J, Poriel C. Spirobifluorene-2,7-dicarbazole-4′-phosphine Oxide as Host for High-Performance Single-Layer Green Phosphorescent OLED Devices. Org Lett 2015; 17:4682-5. [DOI: 10.1021/acs.orglett.5b02027] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sébastien Thiery
- UMR
CNRS 6226, Institut des Sciences Chimiques de Rennes, Rennes 35042 Cedex, France
| | - Denis Tondelier
- UMR
7647, LPICM, École Polytechnique,91128 Palaiseau, France
| | - Bernard Geffroy
- UMR
7647, LPICM, École Polytechnique,91128 Palaiseau, France
- LICSEN,
NIMBE UMR 3685, CEA Saclay, 91191 Gif Sur Yvette, France
| | - Emmanuel Jacques
- UMR
CNRS 6164, Institut d'Électronique et de Télécommunications de Rennes, Rennes 35042 Cedex, France
| | - Malo Robin
- UMR
CNRS 6164, Institut d'Électronique et de Télécommunications de Rennes, Rennes 35042 Cedex, France
| | - Rémi Métivier
- UMR
CNRS 8531, PPSM, ENS Cachan, 94235 Cachan, France
| | - Olivier Jeannin
- UMR
CNRS 6226, Institut des Sciences Chimiques de Rennes, Rennes 35042 Cedex, France
| | | | - Cyril Poriel
- UMR
CNRS 6226, Institut des Sciences Chimiques de Rennes, Rennes 35042 Cedex, France
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Wang L, Wang L, Huang J, Yu G. Synthesis and Characterization of Dibenzo[ a, d]cyclohepten-5-one Derivatives for Light-Emitting Diodes. CHINESE J CHEM 2015. [DOI: 10.1002/cjoc.201500322] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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11
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Kaiser RP, Hessler F, Mosinger J, Císařová I, Kotora M. A [2+2+2]-Cyclotrimerization Approach to Selectively Substituted Fluorenes and Fluorenols, and Their Conversion to 9,9′-Spirobifluorenes. Chemistry 2015; 21:13577-82. [DOI: 10.1002/chem.201502370] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Indexed: 11/09/2022]
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12
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Effective Host Materials for Blue/White Organic Light-Emitting Diodes by Utilizing the Twisted Conjugation Structure in 10-Phenyl-9,10-Dihydroacridine Block. Chem Asian J 2015; 10:1402-9. [DOI: 10.1002/asia.201500235] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2015] [Indexed: 11/07/2022]
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13
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2-Substituted vs 4-substituted-9,9′-spirobifluorene host materials for green and blue phosphorescent OLEDs: a structure–property relationship study. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.081] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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14
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Chen H, Jiang ZQ, Gao CH, Xu MF, Dong SC, Cui LS, Ji SJ, Liao LS. Silicon-Based Material with Spiro-Annulated Fluorene/Triphenylamine as Host and Exciton-Blocking Layer for Blue Electrophosphorescent Devices. Chemistry 2013; 19:11791-7. [DOI: 10.1002/chem.201301106] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Indexed: 11/09/2022]
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15
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Cai S, Hu X, Han J, Zhang Z, Li X, Wang C, Su J. Efficient organic dyes containing dibenzo heterocycles as conjugated linker part for dye-sensitized solar cells. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.12.074] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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