Mechanochromism and Polymorphism-Dependent Emission of Tetrakis(4-(dimethylamino)phenyl)ethylene
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- 作者：Qingkai Qi ; Jibo Zhang ; Bin Xu ; Bao Li ; Sean Xiao-An Zhang ; Wenjing Tian
- 刊名：Journal of Physical Chemistry C
- 出版年：2013
- 出版时间：November 27, 2013
- 年：2013
- 卷：117
- 期：47
- 页码：24997-25003
- 全文大小：417K
- 年卷期：v.117,no.47(November 27, 2013)
- ISSN：1932-7455
文摘
The mechanochromic property of tetrakis(4-(dimethylamino)phenyl)ethylene (TDMAPE) with natural propeller shape and nearly centrosymmetric structure was investigated. The destruction of the crystalline structure leads to the planarization of molecular conformation, which is considered as a possible reason for the red-shift of absorption and fluorescence spectra after grinding. And the polymorphism-dependent emissions of the two polymorphs of TDMAPE are mainly determined by the intramolecular conformation, which show the increased coplanarity or conjugation degree, ultimately leading to the bathochromic shift of the emissions.