177159-58-9Relevant academic research and scientific papers
High nonlinear optical response in 4-chlorothiazole-based azo dyes
Borbone, Fabio,Carella, Antonio,Ricciotti, Laura,Tuzi, Angela,Roviello, Antonio,Barsella, Alberto
experimental part, p. 290 - 295 (2011/06/11)
Four azo dyes showing high nonlinear optical properties were prepared, based on a 4-chlorothiazole azo moiety functionalized with strong acceptor groups and/or further donor/acceptor groups along the conjugated backbone. The effects of the acceptors as we
Modulated conjugation as a means of improving the intrinsic hyperpolarizability
Perez-Moreno, Javier,Zhao, Yuxia,Clays, Koen,Kuzyk, Mark G.,Shen, Yuquan,et al.
body text, p. 5084 - 5093 (2009/09/30)
A new strategy for optimizing the first hyperpolarizability based on theconcept of a modulated conjugated path in linear molecules is investiga ted. A series of seven novel chromophores with different types of conjugated paths were synthesized and characterized. Hyper-Rayleigh scatteringexperiments confirmed that modulated conjugation paths that include ben zene, thiophene, and/or thiazole rings in combination with azo and/or ethenyl linkages between dihydroxyethylamino donor groups and various acceptor groups result in enhanced intrinsic hyperpolarizabilities that exceed the long-standing apparent limit for two of the chromophores. The experimental results are analyzed and interpreted in the context of quantumlimits, which show that conjugation modulation of the bridge in donor/a cceptor molecules simultaneously optimizes the transition moments and the energy-level spacing.
Second-order optical nonlinearity of in situ prepared polyurethanes having thiazolylazo chromophores
Matsui, Masaki,Kushida, Mitsugu,Funabiki, Kazumasa,Muramatsu, Hiroshige,Shibata, Katsuyoshi,Hirota, Kazuo,Hosoda, Masahiro,Tai, Kazuo
, p. 127 - 132 (2007/10/03)
The in situ prepared polyurethane films of the thiazolylazo NLOphores showed d33 values of 38-49 pm V-1. The temporal stability of the poled NLOphore was in the following order of the polymers: network > side chain > main chain.
