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https://hdl.handle.net/1822/14447
Título: | Synthesis and evaluation of NLO properties of π-conjugated donor‐acceptor systems bearing pyrrole and thiophene heterocycles |
Autor(es): | Castro, M. Cidália R. Fonseca, A. Maurício C. Belsley, M. Raposo, M. Manuela M. |
Palavras-chave: | Nonlinear optics (NLO) Hyper-Rayleigh scattering (HRS) technique Heterocyclic azo dyes Redox potentials Thermal stability Pyrrole Thiophene (Benzo)thiazole |
Data: | 2011 |
Editora: | SPIE - The Society of Photo-optical Instrumentation Engineers |
Revista: | Proceedings of SPIE |
Resumo(s): | Two series of novel push-pull heterocyclic azo dyes have been synthesized and characterized. The two series of compounds were based on different combinations of π-conjugated bridges (bithiophene and thienylpyrrole) which also act simultaneously as donor groups, together with diazo(benzo)thiazolyl as acceptor moieties. Their thermal stability and electrochemical behavior were characterized, while hyper-Rayleigh scattering (HRS) was employed to evaluate their second-order nonlinear optical properties. The results of these studies have been critically analyzed together with several thienylpyrrole azo dyes reported earlier from our laboratories in which the thienylpyrrole system was used as the donor group functionalized with aryl and (benzo)thiazolyldiazene as acceptor moiety. The measured molecular first hyperpolarizabilities and the observed linear optical and redox behavior showed strong variations in function of the heterocyclic spacers used (bithiophene or thienylpyrrole) and were also sensitive to the acceptor strength of the diazenehetero(aryl) moiety. |
Tipo: | Artigo em ata de conferência |
URI: | https://hdl.handle.net/1822/14447 |
ISBN: | 9780819485755 |
DOI: | 10.1117/12.892124 |
ISSN: | 0277-786X 1996-756X |
Versão da editora: | http://spiedigitallibrary.org/proceedings/resource/1/psisdg |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - FAMO - Artigos/Papers (with refereeing) CDQuim - Artigos (Papers) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Synthesis and evaluation of NLO properties of_conjugated donor‐acceptor systems bearing pyrrole and thiophene heterocycles.pdf | 483,9 kB | Adobe PDF | Ver/Abrir |