A highly stable, luminescent and layered zinc(II)-MOF : Iron(III)/copper(II) dual sensing and guest-assisted exfoliation

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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Author(s)

  • Xiu Qian
  • Siyu Deng
  • Xiang Chen
  • Qiang Gao
  • Lizhuang Chen

Detail(s)

Original languageEnglish
Journal / PublicationChinese Chemical Letters
Publication statusOnline published - 12 Sep 2019

Abstract

A highly stable and luminescent metal-organic framework (LMOF) with layered structure, namely, C6H4N5OZn (1) has been successfully achieved and fully characterized by single crystal X-ray diffraction, powder X-ray diffractions, fluorescence titration and thermogravimetry. This blue-light emitting compound 1 exhibit outstanding stability and can detect Fe3+ and Cu2+ in water specifically, presenting potential application in the field of fluorescent probe technology. Fluorescence titration experiments indicate that the detection of Fe3+ ions by 1 is more significant than that of Cu2+ ions in terms of Ksv value. Furthermore, guest-assisted exfoliation of layered MOF 1 is efficiently carried out through ether O[sbnd]H hydrogen bond or π···π interactions between the layered host structure and intercalated guest molecules (4,4′-oxybisbenzoic acid and triphenylamine). Tyndal scattering was observed in the suspensions of obtained MOF nanosheets. This study shows that the compound 1 with unique metal ion sensing properties can be applied as a probe material in water pollution treatment field, but also opens up the opportunity for synthesizing luminescent MONs through the “bottom-up” guest intercalation methodology.

Research Area(s)

  • Exfoliation, Fluorescence titration, LMOF, MONs, Tyndal scattering