Hierarchical Emergence and Dynamic Control of Chirality in a Photoresponsive Dinuclear Complex

Chiroptical photoswitches are of interest from a viewpoint of applications in advanced information technologies. We report dynamic on–off photoswitching of circularly polarized luminescence (CPL) in a binuclear europium complex system. Two coordination units are arranged closely in a chiral fashion...

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Published in:The journal of physical chemistry letters 2018-05, Vol.9 (9), p.2151-2157
Main Authors: Hashimoto, Yuichiro, Nakashima, Takuya, Yamada, Miku, Yuasa, Junpei, Rapenne, Gwénaël, Kawai, Tsuyoshi
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Chemical Sciences
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container_issue 9
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container_title The journal of physical chemistry letters
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creator Hashimoto, Yuichiro
Nakashima, Takuya
Yamada, Miku
Yuasa, Junpei
Rapenne, Gwénaël
Kawai, Tsuyoshi
description Chiroptical photoswitches are of interest from a viewpoint of applications in advanced information technologies. We report dynamic on–off photoswitching of circularly polarized luminescence (CPL) in a binuclear europium complex system. Two coordination units are arranged closely in a chiral fashion by a photoresponsive ligand with a one-handed helical structure. The chirality in the helical scaffold is hierarchically transferred to the chirality in nine-coordinate complex sites. The chiral close arrangement of complex units induces the enrichment of a specific chiral coordination structure in the nine-coordinate europium sites. The chiral arrangement of complex units is switched in conjunction with the photoinduced helix–nonhelix structural change in the photoresponsive framework, demonstrating on–off switching of CPL with high contrast.
doi_str_mv 10.1021/acs.jpclett.8b00690
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subjects Chemical Sciences
title Hierarchical Emergence and Dynamic Control of Chirality in a Photoresponsive Dinuclear Complex
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