Frontiers in Chemistry (Dec 2021)

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

  • Qunpeng Duan,
  • Yibo Xing,
  • Kainan Guo

DOI
https://doi.org/10.3389/fchem.2021.816069
Journal volume & issue
Vol. 9

Abstract

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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.

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