Reversible Photoisomerization of Spiropyran on the Surfaces of Au25 Nanoclusters

被引：29

作者：

Udayabhaskararao, T. ^{[1
]}

Kundu, Pintu K. ^{[1
]}

Ahrens, Johannes ^{[1
]}

Klajn, Rafal ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Organ Chem, IL-76100 Rehovot, Israel

来源：

CHEMPHYSCHEM | 2016年 / 17卷 / 12期

基金：

以色列科学基金会;

关键词：

molecular switches; nanoclusters; photochromism; self-assembly; spiropyran; DUAL-RESPONSIVE NANOPARTICLES; PROTECTED GOLD CLUSTERS; LIGAND-EXCHANGE; PHOTOCHROMIC SPIROPYRAN; ZIPPER CRYSTALLIZATION; CIRCULAR-DICHROISM; MOLECULAR MACHINES; MASS-SPECTROMETRY; AU NANOPARTICLES; AU-38; CLUSTERS;

D O I：

10.1002/cphc.201500897

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Au-25 nanoclusters functionalized with a spiropyran molecular switch are synthesized via a ligand-exchange reaction at low temperature. The resulting nanoclusters are characterized by optical and NMR spectroscopies as well as by mass spectrometry. Spiropyran bound to nanoclusters isomerizes in a reversible fashion when exposed to UV and visible light, and its properties are similar to those of free spiropyran molecules in solution. The reversible photoisomerization entails the modulation of fluorescence as well as the light-controlled self-assembly of nanoclusters.

引用

页码：1805 / 1809

页数：5

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