Journal
CHEMPHYSCHEM
Volume 17, Issue 12, Pages 1805-1809Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201500897
Keywords
molecular switches; nanoclusters; photochromism; self-assembly; spiropyran
Funding
- G. M. J. Schmidt-Minerva Center for Supramolecular Architectures
- Israel Science Foundation [1463/11]
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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.
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