Wen-Xin Mao, Kang Chen, M. Ouyang
2014
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Influential Citations
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Journal
Chinese Journal of Organic Chemistry
Abstract
Two triarylacrylonitrile compounds, (Z)-2,3-bis(4-(diphenylamino)phenyl)-3-phenyl acrylonitrile (2DPA-TPCN) and (Z)-2,3-bis(4'-(diphenylamino)biphenyl-4-yl)-3-phenyl acrylonitrile (2TPA-TPCN) have been designed and synthesized. Characterizations were performed via nuclear magnetic resonance (NMR) and electron ionization-mass spectrometry (EI-MS). Exhibiting aggregation-induced emission (AIE) activity, the obtained 2DPA-TPCN and 2TPA-TPCN hardly have any luminescence in pure THF solution. However, strong luminescences were observed after adding water to the THF solutions (fw> 60%). When 2DPA-TPCN and 2TPA-TPCN were ground, their colors and intensity turned weakly from saffron [fluorescence quantum efficiency (ΦF)=2.0%] to orange (ΦF=12.0%) and from jade green (ΦF=44.6%) to croci (ΦF=16.8%), respectively. And the change of the color of 2TPA-TPCN could be discriminated at natural light. Moreover, the ground powder returns to original colour by being exposed to solvent vapor or being heated at about 100 °C for 2 min. Photoluminescence (PL) spectra of the samples, which were obtained under different conditions (ungrind and grind), showed that the maximum emis-