Reversible Photoisomerization of Spiropyran on the Surfaces of Au25 Nanoclusters

T. Udayabhaskararao; Pintu K. Kundu; Johannes Ahrens; Rafal Klajn

doi:10.1002/cphc.201500897

Reversible Photoisomerization of Spiropyran on the Surfaces of Au₂₅ Nanoclusters

T. Udayabhaskararao, Pintu K. Kundu, Johannes Ahrens, Rafal Klajn

Weizmann Institute of Science, Israel

Research output: Contribution to journal › Article

11 Citations (Scopus)

Abstract

Au₂₅ 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.

Original language	English
Pages (from-to)	1805-1809
Number of pages	5
Journal	ChemPhysChem
DOIs	https://doi.org/10.1002/cphc.201500897
Publication status	Published - Jun 17 2016

Keywords

molecular switches
nanoclusters
photochromism
self-assembly
spiropyran

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Physical and Theoretical Chemistry

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Udayabhaskararao, T., Kundu, P. K., Ahrens, J., & Klajn, R. (2016). Reversible Photoisomerization of Spiropyran on the Surfaces of Au₂₅ Nanoclusters. ChemPhysChem, 1805-1809. https://doi.org/10.1002/cphc.201500897

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