Carboxylato-Pillar[6]arene-Based Fluorescent Indicator Displacement Assays for Caffeine Sensing

In the present work, we have developed a new indicator displacement system based on pillararene for anionic water-soluble carboxylato pillar [6] arene (WP6) and aromatic fluorescent dye safranine T (ST). A large fluorescence enhancement and colour change of ST were observed after complexation with e...

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Bibliographic Details
Published in:Frontiers in chemistry 2021-12, Vol.9, p.816069-816069
Main Authors: Duan, Qunpeng, Xing, Yibo, Guo, Kainan
Format: Article
Language:English
Subjects:
caffeine sensing
Chemistry
fluorescent
host-guest complex
indicator displacement assay
pillararene
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Summary:In the present work, we have developed a new indicator displacement system based on pillararene for anionic water-soluble carboxylato pillar [6] arene (WP6) and aromatic fluorescent dye safranine T (ST). A large fluorescence enhancement and colour change of ST were observed after complexation with electron-rich cavity in WP6 because of host-guest twisted intramolecular charge-transfer interactions. The constructed pillararene-indicator displacement system can be applied for caffeine selective detection in water.
ISSN:2296-2646
2296-2646
DOI:10.3389/fchem.2021.816069