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Efficient sensing of fluoride ions in water using a novel water soluble self-assembled supramolecular sensor based on pillar[5]arene

Author:
Lin, Qi, Zheng, Feng, Liu, Lu, Mao, Peng-Peng, Zhang, You-Ming, Yao, Hong, Wei, Tai-Bao
Source:
RSC advances 2016 v.6 no.113 pp. 111928-111933
ISSN:
2046-2069
Subject:
aromatic acids, aromatic hydrocarbons, enthalpy, fluorides, iron, metal ions, water solubility
Abstract:
The development of novel strategies to achieve efficient detection of ions in water is an intriguing challenge. Moreover, due to its high hydration enthalpy, the detection of F⁻ in water is a very difficult task. Herein, we report a novel and efficient method for highly selective detection of ions in water. This novel approach can be illustrated as follows. First, water soluble cationic pillar[5]arene (P5) and aromatic acid derivatives (N1) that were self-assembled in water formed supramolecular sensors (P5N1). Then, competitive coordination was rationally introduced into these supramolecular sensors by adding metal ions (such as Fe³⁺) to form new supramolecular sensors (P5N1Fe). Interestingly, the supramolecular sensor P5N1Fe showed a high selectivity for F⁻ in water solution. Therefore, this suggests that this method is a novel and facile way to design sensors for the efficient sensing of ions in water.
Agid:
6413785