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Issue 89, 2019
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Photo-controlled chirality transfer and FRET effects based on pseudo[3]rotaxane

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Abstract

The use of light to regulate the chirality of supramolecular assemblies in a non-invasive manner remains a challenge. Herein, we report a novel photochromic pseudo[3]rotaxane based on a (R/S)-2,2′-binaphthyl secondary ammonium salt guest (2) and anthracene-bridged bis(dibenzo-24-crown-8) (1), which features a chirality transfer and fluorescence resonance energy transfer (FRET) from 2 to 1. Benefiting from the photo-oxidation of anthracene, the induced circular dichroism (ICD) signals of (R/S)-2@1 can be switched off/on by irradiation with 365 nm UV light and heating. This noncovalent supramolecular assembly strategy provides us with unique opportunities to design and construct further smart photo-responsive chiral molecular switches.

Graphical abstract: Photo-controlled chirality transfer and FRET effects based on pseudo[3]rotaxane

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Article information


Submitted
05 Sep 2019
Accepted
11 Oct 2019
First published
11 Oct 2019

Chem. Commun., 2019,55, 13462-13465
Article type
Communication

Photo-controlled chirality transfer and FRET effects based on pseudo[3]rotaxane

H. Fu, H. Zhang, H. Zhang and Y. Liu, Chem. Commun., 2019, 55, 13462
DOI: 10.1039/C9CC06917H

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