Aggregation-Enhanced Emission in Gold Nanoparticles Protected by Tetradentate Perylene Derivative
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- 作者：Jing Lv ; Yingjie Zhao ; Guoxing Li ; Yongjun Li ; Huibiao Liu ; Yuliang Li ; Daoben Zhu ; Shu Wang
- 刊名：Langmuir
- 出版年：2009
- 出版时间：October 6, 2009
- 年：2009
- 卷：25
- 期：19
- 页码：11351-11357
- 全文大小：950K
- 年卷期：v.25,no.19(October 6, 2009)
- ISSN：1520-5827
文摘
Three novel gold nanoparticle (AuNPs) composites protected by perylene bisimide derivatives have been designed and synthesized. Thanks to the rational molecular design, AuNPs capped by N,N′-2,6-bis(4-aminomethylpyridine)-1,6,7,13-tert-[4-(hydroxymethyl)phenoxy-5-(1,2-dithiolan-3-yl)pentanoate]-3,4,9,10- tetracarboxylic acid bisimide (8SP-AuNPs) exhibited unusual enhancement in fluorescence intensity, while the other two nanoparticle composites showed slight enhancement or quench in emission spectra. The structural effect of ligands on aggregation enhanced emission had been studied, and temperature dependence experiments had been conducted. Deductive explanation had been made to elucidate the special spectral behavior of 8SP-AuNPs led by restricted motion of perylene chromophores in the packed nanoculsters.