A new fluorogenic sensing platform for salicylic acid derivatives based on π-π and NH-π interactions between electron-deficient and electron-rich aromatics

Anup Pandith, Giridhari Hazra, Hong Seok Kim

研究成果: 雜誌貢獻文章同行評審

15 引文 斯高帕斯(Scopus)

摘要

A novel simple fluorescent probe was designed for the recognition of electron-rich salicylic acid derivatives (SAs). The imidazole-appended aminomethyl perylene probe 1 selectively differentiated between electron-rich amino-SAs and electron-deficient nitro-SAs in EtOH, exhibiting the highest selectivity and sensitivity toward 5-aminosalicylic acid (5-ASA) and showing strong 1:1 binding (Ka = 1.37 × 107 M− 1). This high selectivity and sensitivity resulted from the synergistic multiple hydrogen bonding interactions of secondary amine and imidazole units and π-π interactions between electron-rich and electron-deficient rings, along with the unusual NH-π interactions between 5-ASA and the perylene moiety of 1. The limit of detection (LOD) for 5-ASA in EtOH was 0.012 ppb.
原文英語
頁(從 - 到)151-159
頁數9
期刊Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy
178
DOIs
出版狀態已發佈 - 5月 5 2017
對外發佈

ASJC Scopus subject areas

  • 分析化學
  • 原子與分子物理與光學
  • 儀器
  • 光譜

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