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Title: Aggregation-induced emissions of tetraphenylethene derivatives and their utilities as chemical vapor sensors and in organic light-emitting diodes
Authors: Dong, Yongqiang
Lam, Jacky W. Y.
Qin, Anjun
Liu, Jianzhao
Li, Zhen
Tang, Ben-Zhong
Sun, Jiaxin
Kwok, Hoi-Sing
Keywords: Aggregation
Gas sensors
Organic light emitting diodes
Issue Date: Jul-2007
Citation: Applied physics letters, v. 91, 011111 (2007)
Abstract: Nonemissive tetraphenylethene (TPE) 1 and its diphenylated derivative 2 were induced to emit intensely by aggregate formation. Crystalline aggregates of the dyes emitted bluer lights than their amorphous counterparts. The emissions of the TPE dyes could be switched off and on continuously and reversibly by wetting and dewetting with solvent vapors, respectively, manifesting their ability to optically sense volatile organic compounds. The light-emitting diodes fabricated from 1 and 2 were turned on at ~2.9 and ~5 V and emitted blue lights with maximum luminance of ~1800 and ~11000 cd/m-2, respectively.
Rights: Applied Physics Letters © copyright (2007) American Institute of Physics. The Journal's web site is located at
Appears in Collections:ECE Journal/Magazine Articles

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