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无机纳米粒子和多金属氧酸盐组装体薄膜中的可逆光致变色荧光。

Reversible photoswitchable fluorescence in thin films of inorganic nanoparticle and polyoxometalate assemblies.

机构信息

National Center for Nanoscience and Technology, Beijing 100190, China.

出版信息

J Am Chem Soc. 2010 Mar 10;132(9):2886-8. doi: 10.1021/ja908201x.

DOI:10.1021/ja908201x
PMID:20155922
Abstract

A novel type of inorganic hybridized ultrathin film consisting of Preyssler-type polyoxometalates K(14)[Na(H(2)O)P(5)W(30)O(110)] (Na-POMs) and CdSe@CdS nanoparticles (NPs) was prepared on the solid substrates by a layer-by-layer assembly technique. The film exhibits reversible fluorescence switching behavior under control of irradiation with either UV light or visible light, which is ascribed to the selective occurrence of fluorescence resonance energy transfer between luminescent NPs and different states of photochromic Na-POMs.

摘要

一种新型的无机杂化超薄膜由多金属氧酸盐 K(14)[Na(H(2)O)P(5)W(30)O(110)] (Na-POMs)和 CdSe@CdS 纳米粒子 (NPs)组成，通过层层组装技术在固体基底上制备。该薄膜在紫外光或可见光照射下表现出可逆的荧光开关行为，这归因于发光纳米粒子和不同态光致变色 Na-POMs 之间荧光共振能量转移的选择性发生。

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