Novel PPV/Mesoporous Organosilica Composites: Influence of the Host Chirality on a Conjugated Polymer Guest
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- 作者：S. Hessam M. Mehr ; Michael Giese ; Hao Qi ; Kevin E. Shopsowitz ; Wadood Y. Hamad ; Mark J. MacLachlan
- 刊名：Langmuir
- 出版年：2013
- 出版时间：October 8, 2013
- 年：2013
- 卷：29
- 期：40
- 页码：12579-12584
- 全文大小：337K
- 年卷期：v.29,no.40(October 8, 2013)
- ISSN：1520-5827
文摘
The conjugated polymer poly(p-phenylenevinylene) (PPV) was polymerized in the pores of chiral nematic mesoporous organosilica to give a composite film showing the strong characteristic fluorescence of PPV as well as the iridescence due to the photonic band gap of the host material. Detailed circular dichroism (CD) studies reveal a chiral structure of the polymer within the pores. These new fluorescent materials undergo fluorescence quenching upon exposure to electron deficient aromatics such as 2,4,6-trinitrotoluene (TNT), indicating that they may be useful for developing chemical sensors.