51
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Grybauskaite-Kaminskiene G, Volyniuk D, Mimaite V, Bezvikonnyi O, Bucinskas A, Bagdziunas G, Grazulevicius JV. Aggregation-Enhanced Emission and Thermally Activated Delayed Fluorescence of Derivatives of 9-Phenyl-9H
-Carbazole: Effects of Methoxy and tert
-Butyl Substituents. Chemistry 2018; 24:9581-9591. [DOI: 10.1002/chem.201800822] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 04/01/2018] [Indexed: 01/21/2023]
Affiliation(s)
| | - Dmytro Volyniuk
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Viktorija Mimaite
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Oleksandr Bezvikonnyi
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Audrius Bucinskas
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Gintautas Bagdziunas
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
| | - Juozas V. Grazulevicius
- Department of Polymer Chemistry and Technology; Kaunas University of Technology; Radvilenu pl. 19 LT-50254 Kaunas Lithuania
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52
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Qu C, Gao Z, Chen Y. Synthesis of 9,10-distyrylanthracene derivative and its one- and two-photon induced emission in solid state. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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53
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Lei ZY, Lee GH, Lai CK. Luminescent mesogenic borondifluoride complexes with the Schiff bases containing salicylideneamines and β-enaminoketones core systems. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.03.047] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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54
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Emergence of White Organic Light-Emitting Diodes Based on Thermally Activated Delayed Fluorescence. APPLIED SCIENCES-BASEL 2018. [DOI: 10.3390/app8020299] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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55
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Lin X, Zhu Y, Zhang B, Zhao X, Yao B, Cheng Y, Li Z, Qu Y, Xie Z. Highly Efficient TADF Polymer Electroluminescence with Reduced Efficiency Roll-off via Interfacial Exciplex Host Strategy. ACS APPLIED MATERIALS & INTERFACES 2018; 10:47-52. [PMID: 29283240 DOI: 10.1021/acsami.7b16887] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Solution-processed organic light-emitting diodes (s-OLED) consisting of TAPC/TmPyPB interfacial exciplex host and polymer PAPTC TADF emitter are prepared, simultaneously displaying ultralow voltages (2.50/2.91/3.51/4.91 V at luminance of 1/100/1000/1000 cd m-2), high efficiencies (14.9%, 50.1 lm W-1), and extremely low roll-off rates (J50 of 63.16 mA cm-2, L50 of ca. 15000 cd m-2). Such performance is distinctly higher than that of pure-PAPTC s-OLED. Compared to pure-PAPTC, the advanced emissive layer structure of TAPC:PAPTC/TmPyPB is unique in much higher PL quantum yield (79.5 vs 36.3%) and nearly 4-fold enhancement in kRISC of the PAPTC emitter to 1.48 × 107 s-1.
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Affiliation(s)
- Xingdong Lin
- School of Science, Changchun University of Science and Technology , Changchun 130022, P. R. China
| | - Yunhui Zhu
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Baohua Zhang
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
| | - Xiaofei Zhao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
| | - Bing Yao
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
- University of Chinese Academy of Sciences , Beijing 100049, P. R. China
| | - Yanxiang Cheng
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
| | - Zhanguo Li
- School of Science, Changchun University of Science and Technology , Changchun 130022, P. R. China
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
| | - Yi Qu
- School of Science, Changchun University of Science and Technology , Changchun 130022, P. R. China
| | - Zhiyuan Xie
- State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences , Changchun 130022, P. R. China
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56
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Zhang L, Li XL, Luo D, Xiao P, Xiao W, Song Y, Ang Q, Liu B. Strategies to Achieve High-Performance White Organic Light-Emitting Diodes. MATERIALS (BASEL, SWITZERLAND) 2017; 10:E1378. [PMID: 29194426 PMCID: PMC5744313 DOI: 10.3390/ma10121378] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/07/2017] [Revised: 11/25/2017] [Accepted: 11/27/2017] [Indexed: 01/09/2023]
Abstract
As one of the most promising technologies for next-generation lighting and displays, white organic light-emitting diodes (WOLEDs) have received enormous worldwide interest due to their outstanding properties, including high efficiency, bright luminance, wide viewing angle, fast switching, lower power consumption, ultralight and ultrathin characteristics, and flexibility. In this invited review, the main parameters which are used to characterize the performance of WOLEDs are introduced. Subsequently, the state-of-the-art strategies to achieve high-performance WOLEDs in recent years are summarized. Specifically, the manipulation of charges and excitons distribution in the four types of WOLEDs (fluorescent WOLEDs, phosphorescent WOLEDs, thermally activated delayed fluorescent WOLEDs, and fluorescent/phosphorescent hybrid WOLEDs) are comprehensively highlighted. Moreover, doping-free WOLEDs are described. Finally, issues and ways to further enhance the performance of WOLEDs are briefly clarified.
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Affiliation(s)
| | - Xiang-Long Li
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
| | - Dongxiang Luo
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
| | - Peng Xiao
- School of Physics and Optoelectronic Engineering, Foshan University, Foshan 528000, China.
| | | | | | - Qinshu Ang
- Shunde Polytechnic, Foshan 528300, China.
| | - Baiquan Liu
- Institute of Polymer Optoelectronic Materials and Devices, State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640, China.
- LUMINOUS! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798, Singapore.
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57
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Structure and Conformational Studies of Aza-Crown 8-Amino-BODIPY Derivatives: Influence of Steric Hindrance on Their Photophysical Properties. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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58
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Chen YW, Lee GH, Lai CK. Fluorescent mesogenic boron difluoride complexes derived from heterocyclic benzoxazoles. Dalton Trans 2017; 46:12274-12283. [PMID: 28879357 DOI: 10.1039/c7dt02937c] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
One new series of boron difluoride complexes 1 derived from heterocyclic benzoxazoles 2 was reported, and their mesomorphic and optical properties were also investigated. One single crystal of the mesogenic BF2 complex 1a (m = 12, n = 8) was obtained, and its single crystal and molecular structure were resolved. The geometry coordination at the central boron atom is tetrahedral. It crystallizes in a triclinic space group P1[combining macron] with Z = 4. The overall molecular shape was described as slightly bent Z-shapes, and the molecular length was ca. 34.06 Å. Weak intramolecular and intermolecular H-bonds observed in the crystal lattice were attributed to the formation of mesophases. The results indicated that benzoxazoles 2a (n = 6, 8, 12) formed monotropic SmA phases, while boron difluoride complexes 1a (n = 6, 8, 12, 16) exhibited monotropic SmC mesophases. In contrast, all compounds of 2b and 1b (m = 1, n = 12 for all) were not mesogenic. Boron complexes 1 emitted a pronounced violet emission at λmax = 399 nm in solution at room temperature.
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Affiliation(s)
- Ya-Wen Chen
- Department of Chemistry, National Central University, Chung-Li, Taiwan, Republic of China.
| | - Gene-Hsiang Lee
- Instrumentation Center, National Taiwan University, Taipei 10660, Taiwan, Republic of China
| | - Chung K Lai
- Department of Chemistry, National Central University, Chung-Li, Taiwan, Republic of China.
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59
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Bura T, Beaupré S, Ibraikulov OA, Légaré MA, Quinn J, Lévêque P, Heiser T, Li Y, Leclerc N, Leclerc M. New Fluorinated Dithienyldiketopyrrolopyrrole Monomers and Polymers for Organic Electronics. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b01198] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Thomas Bura
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Serge Beaupré
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
| | - Olzhas A. Ibraikulov
- Laboratoire
ICube, DESSP, Université de Strasbourg, CNRS, 23 rue du Loess, Strasbourg 67037, France
| | - Marc-André Légaré
- Institut
für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, Würzburg 97074, Germany
| | - Jesse Quinn
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Patrick Lévêque
- Laboratoire
ICube, DESSP, Université de Strasbourg, CNRS, 23 rue du Loess, Strasbourg 67037, France
| | - Thomas Heiser
- Laboratoire
ICube, DESSP, Université de Strasbourg, CNRS, 23 rue du Loess, Strasbourg 67037, France
| | - Yuning Li
- Department
of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
| | - Nicolas Leclerc
- Institut
de Chimie et Procédés pour l’Énergie,
l’Environnement et la Santé, ICPEES, Université de Strasbourg, CNRS, Strasbourg 67087, France
| | - Mario Leclerc
- Canada
Research Chair on Electroactive and Photoactive Polymers, Department
of Chemistry, Université Laval, Quebec City, Quebec G1V 0A6, Canada
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60
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Qi Y, Kang R, Huang J, Zhang W, He G, Yin S, Fang Y. Reunderstanding the Fluorescent Behavior of Four-Coordinate Monoboron Complexes Containing Monoanionic Bidentate Ligands. J Phys Chem B 2017; 121:6189-6199. [PMID: 28598169 DOI: 10.1021/acs.jpcb.7b02405] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
We demonstrated for the first time that, at temperatures below the melting point of a given polar solvent, the emission of some four-coordinate monoboron complexes containing monoanionic bidentate (NO) ligands shifted to lower wavelengths, but no such shift was observed for studies conducted in nonpolar solvents. This means that the emission from a polar solvent appears at shorter wavelengths if compared with that from a nonpolar solvent when the measurement was performed at low temperatures, a phenomenon totally different from that observed for conventional solvatochromic fluorophores. The finding was rationalized by considering the temperature-dependent conformational relaxation of the tetrahedron monoboron complexes from their local excited (LE) state to their relaxed excited (RE) state. Further studies revealed that variating the structure of the chelating ligands could result in remarkable changes in the fluorescent colors of the monoboron complexes. However, changing the structure of other two monodentate ligands showed little effect upon the fluorescence property of the compounds. Therefore, it is anticipated that the monoboron complexes may be taken as a platform to construct a variety of functional molecular systems via alternating the structure of the chelating ligand and that of the monodentate ligand. As an example, naphthalene was introduced as a monodentate ligand, and independent emissions from naphthalene unit and the other part of the monoboron complex as well as intramolecular energy transfer between them were observed. It is believed that the present work provides a new insight into the monoboron complexes, laying the foundation for them to be explored for developing novel molecular systems.
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Affiliation(s)
- Yanyu Qi
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, People's Republic of China.,Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an, 710054, People's Republic of China
| | - Rui Kang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, People's Republic of China
| | - Jie Huang
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an, 710054, People's Republic of China
| | - Weidong Zhang
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an, 710054, People's Republic of China
| | - Gang He
- Center for Materials Chemistry, Frontier Institute of Science and Technology, Xi'an Jiaotong University , Xi'an, 710054, People's Republic of China
| | - Shiwei Yin
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, People's Republic of China
| | - Yu Fang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shaanxi Normal University , Xi'an 710062, People's Republic of China
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61
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Lin BY, Easley CJ, Chen CH, Tseng PC, Lee MZ, Sher PH, Wang JK, Chiu TL, Lin CF, Bardeen CJ, Lee JH. Exciplex-Sensitized Triplet-Triplet Annihilation in Heterojunction Organic Thin-Film. ACS APPLIED MATERIALS & INTERFACES 2017; 9:10963-10970. [PMID: 28274116 DOI: 10.1021/acsami.6b16397] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A new concept for organic light-emitting diodes (OLEDs) is presented, which is called exciplex-sensitized triplet-triplet annihilation (ESTTA). The exciplex formed at the organic heterojunction interface of 4,4',4″-tris(N-3-methyphenyl-N-phenyl-amino) triphenylamine and 9,10-bis(2'-naphthyl) anthracene (ADN) is used to sensitize the triplet-triplet annihilation (TTA) process on the ADN molecules. This results in a turn-on voltage (2.2 V) of the blue emission from the OLED below the bandgap (2.9 eV). From the transient electroluminescence measurement, blue emission totally came from the TTA process without direct recombination on the ADN molecules. The blue singlet exciton from the TTA process can be quenched by energy transfer to the exciplex, as revealed by transient photoluminescence measurements. This can be prevented by blocking the energy transfer path and improving the radiative recombination rate of blue emission. With the insertion of the "triplet diffusion and singlet blocking (TDSB)" layer and the incorporation of the dopant material, an ESTTA-OLED with external quantum efficiency of 5.1% was achieved, which consists of yellow and blue emission coming from the exciplex and ESTTA process, respectively.
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Affiliation(s)
- Bo-Yen Lin
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, Republic of China , 10617
| | - Connor J Easley
- Department of Chemistry, University of California, Riverside , Riverside, California 92506, United States
| | - Chia-Hsun Chen
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, Republic of China , 10617
| | - Po-Chen Tseng
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, Republic of China , 10617
| | - Ming-Zer Lee
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, Republic of China , 10617
| | - Pin-Hao Sher
- Center for Condensed Matter Science, National Taiwan University, and Institute of Atomic and Molecular Science, Academia Sinica , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, Republic of China , 10617
| | - Juen-Kai Wang
- Center for Condensed Matter Science, National Taiwan University, and Institute of Atomic and Molecular Science, Academia Sinica , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, Republic of China , 10617
| | - Tien-Lung Chiu
- Department of Photonics Engineering, Yuan Ze University , 135 Yuan-Tung Road, Taoyuan, Taiwan, Republic of China , 32003
| | - Chi-Feng Lin
- Department of Electro-Optical Engineering, National United University , 1, Lienda Road, Miaoli, Taiwan, Republic of China , 36003
| | - Christopher J Bardeen
- Department of Chemistry, University of California, Riverside , Riverside, California 92506, United States
| | - Jiun-Haw Lee
- Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University , 1, Sec. 4, Roosevelt Road, Taipei, Taiwan, Republic of China , 10617
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