Aggregation-induced emission: mechanistic study of the clusteroluminescence of tetrathienylethene
Publication in refereed journal

香港中文大學研究人員

引用次數
替代計量分析
.

其它資訊
摘要In this work we have investigated the aggregation-induced emission (AIE) behaviour of 1,1,2,2-tetra(thiophen-2-yl)ethene (tetrathienylethene, TTE). The semi-locked and fully-locked derivatives (sl-TTE and fl-TTE) have been synthesized to better understand the mechanism behind the solid state photoluminescence of TTE. TTE is a typical AIEgen and its luminescence can be explained through the mechanistic understanding of the restriction of intramolecular motions (RIM). The emissive behaviour of TTE in the THF/water aggregates and crystal state have also been studied, revealing a remarkable red-shift of 35 nm. A similar red-shift emission of 37 nm from the THF/water aggregates to the crystal state is also observed for (E)-1,2-di(thiophen-2-yl) ethene (trans-dithienylethene, DTE). Crystal analysis has revealed that the emission red-shifts are ascribable to the presence of strong sulfur-sulfur (S center dot center dot center dot S) intra- and intermolecular interactions that are as close as 3.669 angstrom for TTE and 3.679 angstrom for DTE. These heteroatom interactions could help explain the photoluminescence of non-conventional luminophores as well as the luminescence of non-conjugated biomacromolecules.
出版社接受日期11.01.2017
著者Viglianti L, Leung NLC, Xie N, Gu XG, Sung HHY, Miao Q, Williams ID, Licandro E, Tang BZ
期刊名稱Chemical Science
出版年份2017
卷號8
期次4
出版社ROYAL SOC CHEMISTRY
頁次2629 - 2639
國際標準期刊號2041-6520
電子國際標準期刊號2041-6539
語言英式英語
關鍵詞LIGHT-EMITTING-DIODES, POLYMER SEMICONDUCTORS, CONJUGATED POLYMERS, MULTIPLE CHROMISMS, BUILDING-BLOCKS, FLUORESCENCE, TETRAPHENYLETHENE, EMITTERS, ACCEPTOR, RECONSTRUCTION
Web of Science 學科類別Chemistry, Multidisciplinary;Chemistry

上次更新時間 2021-17-01 於 01:21