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. 2023 Jan 5;59(4):466-469.
doi: 10.1039/d2cc06285b.

Dual and sequential locked/unlocked photo-switching effects on FRET processes by tightened/loosened nano-loops of diarylethene-based [1]rotaxanes

Trang Manh Khang  1 , Pham Quoc Nhien  1   2 , Tu Thi Kim Cuc  1 , Chia-Hua Wu  1 , Bui Thi Buu Hue  2 , Judy I Wu  3 , Yaw-Kuen Li  4   5 , Hong-Cheu Lin  1   5
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Dual and sequential locked/unlocked photo-switching effects on FRET processes by tightened/loosened nano-loops of diarylethene-based [1]rotaxanes

Trang Manh Khang et al. Chem Commun (Camb). .

Abstract

The self-trapping nano-loop structures of [1]rotaxanes exhibited multiple Förster resonance energy transfer (FRET) patterns via dual and sequential locking/unlocking of pH-gated and UV exposure processes. As a tightened and constrained nano-loop in the acidic condition, dithienylethene (DTE) unit was locked in the highly bending open form to forbid ring closure upon UV irradiation.

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