Thiophen-2-yl and bithienyl substituted pyrazine-2,3-dicarbonitriles as precursors for tetrasubstituted zinc azaphthalocyanines
作者:Eva H. Mørkved、Trygve Andreassen、Roland Fröhlich、Frode Mo、Susana V. Gonzalez
DOI:10.1016/j.poly.2013.02.017
日期:2013.4
coplanarity between the two ringsystems, and red-shifted UV–Vis Q-bands are observed. This lowering in energy is favourable for various applications. Pyrazine-2,3-dicarbonitriles substituted in the 5-position with alkyl-thiophen-2-yl groups or bithienyl groups, were synthesized as precursors for the parent tetrasubstituted ZnAzaPcs, expected to show further red-shifted Q-bands. The reagent Zn(quinoline)2Cl2