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Issue 28, 2016
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Molecular switching involving metastable states: molecular thermal hysteresis and sensing of environmental changes by chiral helicene oligomeric foldamers

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Abstract

Molecular switching is a phenomenon in which the molecular structure reversibly changes in response to external stimulation. It is crucial in biology and is used in various biological sensing applications and responses. In contrast to the well-studied molecular switching involving two or more thermodynamically stable states, switching involving metastable states exhibits notable non-equilibrium thermodynamic properties. Synthetic chiral helicene oligomeric foldamers that exhibit molecular thermal hysteresis in dilute solution are examples. Molecular switching can be used for sensing environmental changes, including temperature threshold, temperature decrease/increase, rate of temperature decrease, counting the numbers 1 and 2, and concentration increase.

Graphical abstract: Molecular switching involving metastable states: molecular thermal hysteresis and sensing of environmental changes by chiral helicene oligomeric foldamers

  • This article is part of the themed collection: Foldamers
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Article information


Submitted
17 Dec 2015
Accepted
04 Mar 2016
First published
04 Mar 2016

Chem. Commun., 2016,52, 4955-4970
Article type
Feature Article

Molecular switching involving metastable states: molecular thermal hysteresis and sensing of environmental changes by chiral helicene oligomeric foldamers

M. Shigeno, Y. Kushida and M. Yamaguchi, Chem. Commun., 2016, 52, 4955
DOI: 10.1039/C5CC10379G

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