Fluorescent phenylethynylene calix[4]arenes for sensing TNT in aqueous media and vapor phase

Journal article

Authors/Editors

NAKORN NIAMNONT

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Publication Details

Author list: Boonkitpatarakul K., Yodta Y., Niamnont N., Sukwattanasinitt M.

Publisher: Royal Society of Chemistry

Publication year: 2015

Journal: RSC Advances (2046-2069)

Volume number: 5

Issue number: 42

Start page: 33306

End page: 33311

Number of pages: 6

ISSN: 2046-2069

eISSN: 2046-2069

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84927914176&doi=10.1039%2fc5ra02758f&partnerID=40&md5=062258a73a6d5baeb835310ddc667883

Languages: English-Great Britain (EN-GB)

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Abstract

The upper-rim of calix[4]arene is modified with phenylacetylene derivatives via Sonogashira coupling reaction to produce a wider cavity for entrapping TNT. The modified calix[4]arene with amino groups on the wider rim exhibits highly selective fluorescence quenching toward TNT compared to other nitro aromatic compounds in an aqueous medium due to the shape and hydrophobicity of the modified cavity. The limit of detection of TNT is 0.3 μM (68 ppb) in water and the Stern-Volmer fluorescence quenching constant is 1.09 × 105 M-1. © The Royal Society of Chemistry 2015.

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