The Heck reaction as a tool to expand polyoxovanadates towards thiol-sensitive organic-inorganic hybrid fluorescent switches

Dalton Transactions : an International Journal of Inorganic Chemistry
Oliver LinnenbergKirill Yu Monakhov

Abstract

Among the Lindqvist-type hexavanadates synthesised herein by the palladium-catalysed Heck reactions a C-C cross-coupled organic-inorganic hybrid with the largest conjugated, stilbene-derivatised π ligands is reduced in the presence of thiols producing a remarkable increase in fluorescence intensity with respect to the fully-oxidised variant. This enhanced emission (ON-state) of the reduced species can be switched OFF if the solution is subjected to e.g. air where the species is re-oxidised.

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Methods Mentioned

BETA
nuclear
X-ray
NMR
fluorescence spectroscopy

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