Synthesis and anion binding properties of 2,5-diamidothiophene polypyrrole Schiff base macrocycles

J. L. Sessler, V Roznyatovskiy, G. D. Pantos, NE Borisova, MD Reshetova, V. M. Lynch, V. N. Khrustalev, Y. A. Ustynyuk

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41 Citations (SciVal)

Abstract

Two easy-to-synthesize polypyrrolic 2,5-diamidothiophene Schiff base macrocycles are reported, along with their anion binding properties as determined via UV-vis spectroscopic titrations carried out in dichloroethane. There is a striking difference between the interactions with anions of the two macrocycles, a finding ascribed to differences in their rigidity. For example, the more flexible dipyrromethane-derived macrocycle displays a 1.2:1 hydrogen sulfate versus nitrate selectivity, while its more rigid bipyrrole-derived congener shows a 7.4:1 selectivity in favor to hydrogen sulfate.
Original languageEnglish
Pages (from-to)5277-5280
Number of pages4
JournalOrganic Letters
Volume7
Issue number23
DOIs
Publication statusPublished - 10 Nov 2005

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