S. S. Chunikhin, O. V. Ershov, M. Y. Ievlev
Sep 1, 2018
Citations
0
Influential Citations
23
Citations
Journal
Dyes and Pigments
Abstract
Abstract A series of novel pyridine derivatives containing tetracyanobutadiene moiety (4-CN-TCPy) were obtained in good yields by the reaction of 2-chlorosubstituted pyridine-3,4-dicarbonitriles with malononitrile using Cs2CO3 as a catalyst. The resulting 4-CN-TCPy are stable intensively colored substances possessing a solid-state emission in the red and near-infrared region. Solutions thereof are characterized with a strong solvatochromic effect as well as weak blue fluorescence.