Cyanostilben-based derivatives: mechanical stimuli-responsive luminophors with aggregation-induced emission enhancement

被引：95

作者：

Zhang, Yujian ^{[1
]}

Sun, Jingwei ^{[1
]}

Bian, Gaofeng ^{[1
,2
]}

Chen, Yiyi ^{[1
]}

Ouyang, Mi ^{[1
]}

Hu, Bin ^{[1
]}

Zhang, Cheng ^{[1
]}

机构：

[1] Zhejiang Univ Technol, Coll Chem Engn & Mat Sci, State Key Lab Green Chem Synth Technol, Hangzhou, Zhejiang, Peoples R China

[2] Hangzhou Normal Univ, Minist Educ, Key Lab Organosilicon Chem & Mat Technol, Hangzhou, Zhejiang, Peoples R China

来源：

PHOTOCHEMICAL & PHOTOBIOLOGICAL SCIENCES | 2012年 / 11卷 / 09期

关键词：

INTRAMOLECULAR CHARGE-TRANSFER; SOLUTE-SOLVENT INTERACTION; LUMINESCENCE; FLUORESCENCE; SIZE; BAND; NANOPARTICLES; WAVELENGTH; CRYSTALS; EXCIMERS;

D O I：

10.1039/c2pp05404c

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Cyanostilbene derivatives with the aggregation-induced emission enhancement (AIEE) activity are prepared by Knoevenagel and Suzuki reactions. Among them, the dye (Z)-2,3-bis(4'-(diphenylamino)-[1,1'-biphenyl]-4-yl)acrylonitrile (CNS-4) nanoparticle suspension shows the polarity-dependent characteristics of the fluorescence properties. By the fluorescence spectroscopy and transmission electron microscopy (TEM) analysis, the restriction of transfer from the local excited (LE) state to the intramolecular charge-transfer (ICT) state and crystal formation results in a blue-shift in emission and enhances the intensity in the aggregate state. Additionally, the luminophors CNS-3 and CNS-4 possess the AIEE effect as well as mechanochromic fluorescent properties. This mechanofluorochromic behavior originates from the change between the crystalline and the amorphous state.

引用

页码：1414 / 1421

页数：8

共 46 条

[1] Solvent Dependant Optical Switching in Carbazole-Based Fluorescent Nanoparticles [J].