AIE‐Active Chiral [3]Rotaxanes with Switchable Circularly Polarized Luminescence

The construction of circularly polarized luminescence (CPL) switches with multiple switchable emission states and high dissymmetry factors (glum) has attracted increasing attention due to their broad applications in diverse fields such as the development of smart devices and sensors. Herein, a new f...

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Published inAngewandte Chemie International Edition Vol. 60; no. 17; pp. 9507 - 9515
Main Authors Li, Wei‐Jian, Gu, Qingyi, Wang, Xu‐Qing, Zhang, Dan‐Yang, Wang, Yu‐Te, He, Xiao, Wang, Wei, Yang, Hai‐Bo
Format Journal Article
LanguageEnglish
Published Germany Wiley Subscription Services, Inc 19.04.2021
EditionInternational ed. in English
Subjects
Acetic acid
aggregation-induced emission
Anions
chiral rotaxanes
Chirality
Circular polarization
circularly polarized luminescence
Electronic devices
Emission
Information transfer
Luminescence
Photoluminescence
Photons
pillararene
Rotaxanes
Smart sensors
stimuli responsiveness
Switches
Switching
aggregation-induced emission
chiral rotaxanes
stimuli responsiveness
circularly polarized luminescence
pillararene
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Summary:The construction of circularly polarized luminescence (CPL) switches with multiple switchable emission states and high dissymmetry factors (glum) has attracted increasing attention due to their broad applications in diverse fields such as the development of smart devices and sensors. Herein, a new family of AIE‐active chiral [3]rotaxanes were designed and synthesized, from which a novel CPL switching system was successfully constructed. The switching process was realized through the controlled motions of the chiral pillar[5]arene macrocycles along the axle through the addition or removal of the acetate anions, which not only modulated the chirality information transfer but also tuned the aggregations of the integrated [3]rotaxanes, thus resulting in reversible transformations between two emission states with both high photoluminescence quantum yields (PLQYs) and high dissymmetry factors (glum) values. The marriage of a switchable rotaxane and an AIEgen gave rise to the successful construction of a novel chiral [3]rotaxane‐based CPL switching system with large glum values, remarkable difference in the glum values, and excellent cycling ability.
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ISSN:1433-7851
1521-3773
DOI:10.1002/anie.202100934