期刊
ADVANCED SCIENCE
卷 9, 期 2, 页码 -出版社
WILEY
DOI: 10.1002/advs.202103041
关键词
cell imaging; energy transfer; NIR; phosphorescence
资金
- NSFC [21772099, 21861132001]
A novel single molecular dual-fold supramolecular light switch is reported in this study, which can exhibit efficiently reversible RTP after binding with CB[8]. Moreover, the binary supramolecular assembly can coassemble with Cy5 to form a ternary supramolecular assembly showing efficient PRET.
Although purely organic room-temperature phosphorescence (RTP) has drawn widespread attention in recent years, regulatable phosphorescence resonance energy transfer (PRET) supramolecular switch is still rare. Herein, single molecular dual-fold supramolecular light switches, which are constructed by phenylpyridinium salts modified diarylethene derivatives (DTE-Cn, n = 3, 5) and cucurbit[8]uril (CB[8]) are reported. Significantly, biaxial [3]pseudorotaxane displayed efficiently reversible RTP after binding with CB[8] and the phosphorescence quenching efficiency is calculated up to be 99%. Furthermore, the binary supramolecular assembly can coassemble with Cy5 to form ternary supramolecular assembly showing efficiently PRET, which is successfully applied in switchable near infrared (NIR) mitochondria-targeted cell imaging and photocontrolled data encryption. This supramolecular strategy involving energy transfer provides a convenient approach for phosphorescent application in biology and material fields.
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