Efficient, Reversible Redox-Switching of Molecular First Hyperpolarizabilities in Ruthenium(II) Complexes Possessing Large Quadratic Optical Nonlinearities
- 1 February 1999
- journal article
- research article
- Published by Wiley in Angewandte Chemie International Edition in English
- Vol. 38 (3) , 366-369
- https://doi.org/10.1002/(sici)1521-3773(19990201)38:3<366::aid-anie366>3.0.co;2-d
Abstract
Low-energy metal-to-ligand charge-transfer (MLCT) excitations are associated with the very large molecular nonlinear optical (NLO) coefficients, β, of the complexes [RuII(NH3)5(N-R-4,4′-bipyridinium)]3+ (R=methyl, phenyl, or 4-acetylphenyl). Chemical oxidation to the RuIII forms causes bleaching of the MLCT absorptions and marked attenuation of the NLO responses. Both effects are completely reversed upon re-reduction, and the extent of the β switching is about 10- to 20-fold.This publication has 0 references indexed in Scilit: