Exploring the pH-dependent kinetics, thermodynamics and photochemistry of a flavylium-based pseudorotaxane-Reference-Cited by-同舟云学术

Exploring the pH-dependent kinetics, thermodynamics and photochemistry of a flavylium-based pseudorotaxane

Published:2021-08-13 Issue:11 Volume:93 Page:1313-1325
ISSN:0033-4545
Container-title:Pure and Applied Chemistry
language:en
Short-container-title:

Author:

Anastácio Rita¹,Seco André¹^ORCID,Mateus Pedro¹,Parola A. Jorge¹,Basílio Nuno¹

Affiliation:

1. Laboratório Associado para a Química Verde (LAQV), Rede de Química e Tecnologia (REQUIMTE), Departamento de Química, Faculdade de Ciências e Tecnologia , Universidade NOVA de Lisboa , 2829-516 Caparica , Portugal

Abstract

Abstract Flavylium-based molecular switches are attractive molecular components to devise stimuli-responsive host-guest systems such as rotaxanes and pseudorotaxanes. These compounds display a pH-dependent reaction network of several species that reversibly interconvert within different time scales. Therefore, to explore and take profit of exceptional stimuli-responsive properties of these systems, detailed kinetic and thermodynamic characterizations are often required. In this work, we present the results of such characterization for a new flavylium compound decorated with a trimethylalkylammonium substituent designed to form a pseudorotaxane with cucurbit[7]uril (CB7). The formation of the pseudorotaxane was characterized in detail, and the thermodynamic and kinetic aspects of the flavylium interconversion reactions in the assembly were investigated and compared with the free molecular switch.

Publisher

Walter de Gruyter GmbH

Subject

General Chemical Engineering,General Chemistry

Link

https://www.degruyter.com/document/doi/10.1515/pac-2021-0603/pdf

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