Efficient Aggregation‐Induced Emission Manipulated by Polymer Host Materials

2019 ◽  
Vol 31 (37) ◽  
pp. 1903962 ◽  
Author(s):  
Xing‐Huo Wang ◽  
Nan Song ◽  
Wei Hou ◽  
Chun‐Yu Wang ◽  
Yan Wang ◽  
...  
2019 ◽  
Vol 31 (37) ◽  
pp. 1970261
Author(s):  
Xing‐Huo Wang ◽  
Nan Song ◽  
Wei Hou ◽  
Chun‐Yu Wang ◽  
Yan Wang ◽  
...  

1998 ◽  
Author(s):  
Hao Jiang ◽  
Michael E. De Rosa ◽  
Weigie Su ◽  
Mark C. Brant ◽  
Daniel G. McLean ◽  
...  

2015 ◽  
Vol 3 (26) ◽  
pp. 13994-14000 ◽  
Author(s):  
Bing Sun ◽  
Chao Xu ◽  
Jonas Mindemark ◽  
Torbjörn Gustafsson ◽  
Kristina Edström ◽  
...  

Compositional studies on interphase layers at polymer electrolyte/electrode interfaces displayed dependence on the host materials and their water content.


2011 ◽  
Vol 44 (12) ◽  
pp. 4589-4595 ◽  
Author(s):  
Cheng-Rong Yin ◽  
Shang-Hui Ye ◽  
Jie Zhao ◽  
Min-Dong Yi ◽  
Ling-Hai Xie ◽  
...  

2009 ◽  
Vol 1197 ◽  
Author(s):  
Yukitami Mizuno ◽  
Isao Takasu ◽  
Shuichi Uchikoga ◽  
Shintaro Enomoto ◽  
Tomoaki Sawabe ◽  
...  

AbstractFluorinated carbazoles as host materials have been investigated for highly efficient organic light emitting diodes (OLEDs). By molecular orbital calculations, we found that fluorinations at position 2, 4, 5 and 7 of carbazole ring were effective for widening HOMO-LUMO energy gap. The energy gaps of our synthesized 2,7-difluorocarbazole (F2-Cz) and 2,4,5,7-tetrafluorocarbazole (F4-Cz), were estimated to be 3.71 eV and 3.87 eV by the absorption spectra, respectively. These energy gaps were higher than that of the non-substituted carbazole (Cz, 3.59 eV). We synthesized poly(N-vinyl-2,7-difluorocarbazole) (F2-PVK) and poly(N-vinyl-2,4,5,7-tetrafluorocarbazole) (F4-PVK) as solution processable polymer host materials. However, the F4-PVK was found to be an unsolved polymer. The F2-PVK could be compared with non substituted poly(N-vinylcarbazole) (PVK) in OLEDs. The emission layer (EML) contained iridium(III) bis [(4,6-di-fluorophenyl)-pyridinato-N,C2′] picolinate (FIrpic) as a blue phosphorescent dopant, and iridium(III) bis [2-(9,9-dihexylfluorenyl)-1-pyridine] acetylacetonate as a yellow dopant. The white OLED with the F2-PVK showed 1.4 times higher luminous current efficiency (24 cd/A) than the PVK (17 cd/A). These data show that the excitation energy is confined on dopants by using fluorinated polymer host material with higher T1 corresponding to wider HOMO-LUMO energy gap.


2020 ◽  
Author(s):  
Wooseok Ki ◽  
Kathleen Ngo ◽  
Boris Averkiev ◽  
Phalguni Ghosh ◽  
GorDan T. Reeves ◽  
...  

2019 ◽  
Vol 14 (6) ◽  
pp. 670-670 ◽  
Author(s):  
Steffen Riebe ◽  
Marco Saccone ◽  
Jacqueline Stelzer ◽  
Andrea Sowa ◽  
Christoph Wölper ◽  
...  

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