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Ruthenium(II)-nitrosyl polypyridinyl Complexes: from NO/ON Isomerization to NO delivery

Published online by Cambridge University Press:  16 March 2015

Pascal G. Lacroix  and
Isabelle Malfant
Pascal G. Lacroix
Affiliation:
Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse, France
Isabelle Malfant
Affiliation:
Laboratoire de Chimie de Coordination du CNRS, 205 route de Narbonne, 31077 Toulouse, France
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Abstract

Ruthenium-nitrosyl (RuII(NO)) complexes are stable in the dark, but exhibit a unique photoreactivity which can lead either to a solid state isomerization from RuII(NO) to RuII(ON), or to a nitric oxide (NO·) release in solution. From our recent discovery of a high yield of isomerization (> 92%) in [RuII(py)4Cl(NO)](PF6)2, we have developed a computational strategy aimed at designing switchable nonlinear optical (NLO) material with high contrast (large difference in the on / off NLO response) in the solid state. Our synthetic targets are terpyridine based RuII chromophores in which various substituents can be introduced to adjust the NLO response which, at best, should be vanishing in the off state. Alternatively, these complexes can undergo a photo-induced NO· release in solution, a possibility which becomes increasingly appealing in relation to the discovery of the numerous biological roles of NO·, in the context of the emergence of the photodynamic therapy. A promising fluorene-terpyridine RuII(NO) complex was investigated, which could find an additional interest in relation to its capability for releasing NO· by a two-photon absorption process.

Keywords

Ruoptoelectronicorganometallic
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1767: Symposium 5C – New Trends in Polymer Chemistry and Characterization , 2015 , pp. 65 - 74
Copyright
Copyright © Materials Research Society 2015 

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