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

Trang Manh KhangPham Quoc Nhien Tu Thi Kim Cuc Chia-Hua WuBui Thi Buu HueJudy I-Chia Wu Yaw-Kuen Li Hong-Cheu Lin

Published in: Chemical communications (Cambridge, England) (2023)

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.

Keyphrases

energy transfer
quantum dots
transcription factor
minimally invasive
high resolution
radiation therapy
single molecule