Host-Guest Complexes of Pillar[5]arene as Components for Supramolecular Light-Harvesting Systems with Tunable Fluorescence

A guest molecule containing a short alkyl spacer between the tetraphenylethylene group and the methylpyridinium group was designed and synthesized. After complexation with a water-soluble pillar[5]arene, the resulting host-guest complex can further self-assemble into fluorescence-emitting nanopartic...

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Published inChemPlusChem (Weinheim, Germany) Vol. 88; no. 10; p. e202300431
Main Authors Li, Xiuxiu, Wu, Zhiying, Wang, Qi, Li, Zheng-Yi, Sun, Xiao-Qiang, Xiao, Tangxin
Format Journal Article
LanguageEnglish
Published WEINHEIM Wiley 01.10.2023
Subjects
Chemistry
Chemistry, Multidisciplinary
Physical Sciences
Science & Technology
self-assembly
POLYMERS
light harvesting systems
SPACER
pillararenes
aggregation-induced emission
SEQUENTIAL ENERGY-TRANSFER
EMISSION
AMPHIPHILES
host-guest interactions
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Summary:A guest molecule containing a short alkyl spacer between the tetraphenylethylene group and the methylpyridinium group was designed and synthesized. After complexation with a water-soluble pillar[5]arene, the resulting host-guest complex can further self-assemble into fluorescence-emitting nanoparticles in water. By loading a commercially available dye Rhodamine 6G into the nanoparticles, an efficient artificial light-harvesting system with high donor/acceptor ratios (>400/1) was successfully constructed. The obtained systems show considerable antenna effects with values of more than 10 times. The system also exhibits tunable fluorescence emission behavior and can be used as a fluorescent ink for information encryption.
Bibliography:ObjectType-Article-1
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ISSN:2192-6506
2192-6506
DOI:10.1002/cplu.202300431