Synthesis, photo- and electro-luminescence of 3-benzoxazol-2-yl-coumarin derivatives.
Two coumarin derivatives containing electron-transporting benzoxazolyl moiety, 7-(diethylamino)-3-(benzoxazol-2-yl)coumarin (DABOC) and 3-(benzoxazol-2-yl)benzo[5,6]coumarin (BOBC), were synthesized and characterized. The photoluminescence and electroluminescence of the compounds were investigated detailedly. The compounds exhibited strong blue-green emissions in both solution and solid states, but the devices with DABOC as the emitting layer exhibited orange emission and maximum luminous efficiency of 2.8 cd/A and maximum luminance of 8,800 cd/m(2), and the devices with BOBC displayed orange-white emission and maximum luminous efficiency of 0.13 cd/A and maximum luminance of 540 cd/m(2).
School of Chemical and Biological Engineering, Lanzhou Jiaotong University, Lanzhou, China. zhaoyl66@hotmail.com
Yuling
Y
Zhao
Tianzhi
T
Yu
Youzhi
Y
Wu
Hui
H
Zhang
Duowang
D
Fan
Zunwei
Z
Gan
Liangliang
L
Yang
Xiaoqian
X
Han
Yumei
Y
Zhang
D003374:Coumarins / Q000138:chemical synthesis / Q000737:chemistry*; D049449:Luminescence; D015394:Molecular Structure
D003374:Coumarins