268536-36-3Relevant academic research and scientific papers
Synthesis of novel push-pull unsymmetrically substituted alkynyl phthalocyanines
Maya, Eva M.,Garcia, Concepcion,Garcia-Frutos, Eva M.,Vazquez, Purificacion,Torres, Tomas
, p. 2733 - 2739 (2000)
Two families of 'push-pull' phthalocyanines 1-3 having an unusually strong dipole moment have been prepared. The syntheses of unsymmetrically substituted phthalocyanines 1a,b and 2 bearing one or two electron- withdrawing 4-nitrophenylethynyl moieties, respectively, and six alkoxy substituents were performed by combination of a zinc or nickel templated cyclotetramerization and cross-coupling palladium mediated methodologies. In a similar way, the 'push-pull' compounds 3a,b having a reversal substitution pattern, characterized by the presence of one electron-donor 4- (dimethylamino)phenylethynyl unit and six strong acceptor alkylsulfonyl substituents were prepared. The compounds show very large second-order nonlinear optical responses.
