An unprecedented switching of the second-order nonlinear optical response in aggregate bis(salicylaldiminato)zinc(ii) Schiff-base complexes
2012; Royal Society of Chemistry; Volume: 41; Issue: 23 Linguagem: Inglês
10.1039/c2dt30702b
ISSN1477-9234
AutoresSanto Di Bella, Ivan Pietro Oliveri, Alessia Colombo, Claudia Dragonetti, Stefania Righetto, Dominique Roberto,
Tópico(s)Metal complexes synthesis and properties
ResumoA luminescent bis(salicylaldiminato)zinc(II) Schiff-base complex, 1, is characterized by a concentration dependent second-order nonlinear optical response, related to the degree of aggregation of the complex in a dichloromethane solution. The formation of the monomeric adduct, by addition of a Lewis base, such as pyridine, to concentrated solutions of 1, leads to a switch-on of the quadratic hyperpolarizability. This represents an unprecedented mode of NLO switching in molecular materials.
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