Investigation of the imidazole-derived moiety/spiro[fluorene-9,9′-xanthene] hybrid compounds for blue luminescent materials
Document Type
Article
Publication Date
7-1-2021
Abstract
Three new imidazole-derived moiety/spiro[fluorene-9,9′-xanthene] hybrid compounds, 1-phenyl-2-(4-(spiro[fluorene-9,9′-xanthen]-2-yl)phenyl)-1H-benzo[d]imidazole (SFX-PBI), 1-(4-(tert-butyl)phenyl)-2-(4-(spiro[fluorene-9,9′-xanthen]-2-yl)phenyl)-1H-phenanthro[9,10-d]imidazole (SFX-PPI), and 1-(4-(tert-butyl)phenyl)-4,5-diphenyl-2-(4-(spiro[fluorene-9,9′-xanthen]-2-yl)phenyl)-1H-imidazole (SFX-PIM), were successfully synthesized for highly efficient blue light-emitting devices. The thermal stabilities, photophysical and electrochemical properties of the hybrid compounds were investigated. These hybrid compounds exhibited strong deep blue emission in solutions. Furthermore, the vacuum-processed nondoped devices based on these compounds were fabricated, in which the device based on the compound SFX-PPI exhibited the best electroluminescence performance with a maximum brightness of 4542 cd/m2, a maximum current efficiency of 4.51 cd/A and a maximum external quantum efficiency (EQE) of 5.03%.
Identifier
85105562686 (Scopus)
Publication Title
Synthetic Metals
External Full Text Location
https://doi.org/10.1016/j.synthmet.2021.116771
ISSN
03796779
Volume
277
Grant
51563014
Fund Ref
National Natural Science Foundation of China
Recommended Citation
Li, Yuanying; Li, Yanmei; Zhao, Yuling; Yu, Tianzhi; Su, Wenming; Wang, Ruidong; Ma, Hailin; and Qian, Long, "Investigation of the imidazole-derived moiety/spiro[fluorene-9,9′-xanthene] hybrid compounds for blue luminescent materials" (2021). Faculty Publications. 4001.
https://digitalcommons.njit.edu/fac_pubs/4001
