A simple, novel method for the preparation of polymer-tetherable, zwitterionic merocyanine NLO-chromophores

Autor:	Iain T. McKinnie, Thomas H. Barnes, Andrew J. Kay, Anthony D. Woolhouse, Timothy G. Haskell, Graeme J. Gainsford, C. P. Wyss
Rok vydání:	2001
Předmět:	chemistry.chemical_classification Condensation polymer General Chemistry Crystal structure Polymer Chromophore Photochemistry Acceptor chemistry.chemical_compound Monomer chemistry Materials Chemistry Side chain Organic chemistry Merocyanine
Zdroj:	Journal of Materials Chemistry. 11:996-1002
ISSN:	1364-5501 0959-9428
DOI:	10.1039/b008316j
Popis:	A suite of polymer-ready nonlinear optical merocyanines has been synthesised and characterised. The tethering functionality—a vicinal dihydroxypropyl residue—is introduced onto the donor nitrogen of the chromophore precursor without the need for protection/deprotection steps, thereby giving ready access to potentially high Tg condensation polymer systems. An X-ray crystal structure determination on a representative chromophore 5 confirms the largely zwitterionic nature of these systems and experimental measurements of second-order nonlinear response [β(0)], by hyper-Raleigh scattering, indicate that a pyridylidene donor–quinomethide acceptor combination gives rise to the largest nonlinearity.
Databáze:	OpenAIRE
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