Tunable nonlinear optical properties of PDA/Ag composite vesicles based on reversible host-guest interaction

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• 作者：Jinan Rao ; Hao Jiang ; Jin Wang ; Gang Zou ; ^{gangzou@ustc.edu.cn} ; Qijin Zhang
• 刊名：Chemical Physics Letters
• 出版年：2012
• 出版时间：29 June, 2012
• 年：2012
• 卷：539-540
• 期：Complete
• 页码：70-73
• 全文大小：445 K

文摘

We develop a novel photo-responsive supramolecular system in which the aggregation and disaggregation of polydiacetylene/silver (PDA/Ag) composite vesicles is mediated by a reversible photo-responsive molecular recognition process. The PDA/Ag composite vesicles provide necessary nonlinear optical (NLO) properties, the host-guest interaction between azobenzene and ¦Â-cyclodextrin get PDA/Ag composite vesicles sufficiently close to each other for providing the enhanced surface plasmon resonance and a corresponding NLO effect. NLO switching of PDA/Ag composite vesicles based on reversible host-guest interactions is realized by alternating visible and UV light irradiation, which may introduce a new way for preparation of smart NLO materials.