New 1H-pyrazolo[3,4-b]quinoxaline derivatives as sharp green-emitting dopants for highly efficient electroluminescent devices
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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Detail(s)
Original language | English |
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Pages (from-to) | 1404-1405 |
Journal / Publication | Chemical Communications |
Issue number | 13 |
Publication status | Published - 2002 |
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Abstract
Several new 1H-pyrazolo[3,4-b]quinoxaline derivatives with N,N-dialkylamino as the electron donating group were prepared; their photoluminescence in solution and electroluminescence have been investigated; they show emission at about 520-540 nm with a fluorescence quantum yield close to unity in solution; devices fabricated by using these compounds as dopants show green emission with efficiencies of 7.5-9.7 cd A-1 and a narrow bandwidth of 65-70 nm peaking at 530-545 nm.
Citation Format(s)
New 1H-pyrazolo[3,4-b]quinoxaline derivatives as sharp green-emitting dopants for highly efficient electroluminescent devices. / Wang, Pengfei; Xie, Zhiyuan; Wong, Oiyan; Lee, Chun-Sing; Wong, Ningbew; Hung, Liangsun; Lee, Shuittong.
In: Chemical Communications, No. 13, 2002, p. 1404-1405.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review