Synthesis and Photochromic Properties of 2-(3-Nitro-2-pyridylmethyl) benzazoles

…, AI Ponyaev, MA Subbotina, AV El'tsov

Index: Zakhs; Ponyaev; Subbotina; El'tsov Russian Journal of General Chemistry, 2001 , vol. 71, # 7 p. 1076 - 1087

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Citation Number: 10

Abstract

Abstract 2-(3-Nitro-2-pyridylmethyl) benzazoles were synthesized, and their photochromic properties were studied by flash photolysis. Introduction of a nitropyridyl instead of the nitrophenyl moiety into the 2-methyl group insignificantly increases the basicity of the methylene group. Nitropyridyl-substituted benzazoles give rise to three detectable photoinduced forms: the corresponding anion at pH> 10, azamerocyanine at pH≈ 4, and ...