Active metal template synthesis of a neutral indolocarbazole-containing [2]rotaxane host system for selective oxoanion recognition

Organic & Biomolecular Chemistry
Asha BrownPaul D Beer

Abstract

An active metal template strategy was used to synthesise a neutral indolocarbazole containing [2]rotaxane anion host system. 1H NMR anion binding investigations reveal that the [2]rotaxane recognises a range of monoanions in acetone-d5 : D2O 95 : 5 with an unusual interlocked host selectivity for acetate and dihydrogenphosphate oxoanions over halides. The rotaxane displays an overall selectivity for the sulfate dianion, favouring a 2 : 1 host : guest binding stoichiometry at low sulfate concentration and a 1 : 1 stoichiometry in the presence of excess sulfate. Fluorescence titration demonstrates that the [2]rotaxane is also capable of sensing guest anions via significant changes in its emission spectrum.

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Citations

Jan 3, 2019·Angewandte Chemie·Florian ModicomStephen M Goldup
Feb 3, 2018·Angewandte Chemie·Mathieu DenisStephen M Goldup
Mar 26, 2021·Journal of the American Chemical Society·Javier EchavarrenChong Tian
May 14, 2021·Organic & Biomolecular Chemistry·Hui Min Tay, Paul Beer
Mar 21, 2018·Journal of the American Chemical Society·James E M LewisStephen M Goldup
Sep 8, 2018·Chemical Reviews·Tomasz JanosikJan Bergman
May 3, 2018·Journal of the American Chemical Society·Stephen D P FieldenIñigo J Vitorica-Yrezabal
Jun 18, 2017·Journal of the American Chemical Society·Guillaume De BoDavid A Leigh
Dec 7, 2018·Chemical Reviews·Teresa L MakoMindy Levine
Jul 29, 2021·Chemistry : a European Journal·Yuen Cheong TsePaul D Beer

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