A regenerable zinc(II) coordination polymer as a dual-luminescent sensor for detection of Cr2O72– and 2, 4, 6-trinitrophenol in aqueous phase. Issue 23 (2nd December 2018)

• Record Type: Journal Article
• Authors: Wu, Yu; Huang, Yun; Wang, Yulan; Zou, Xiang; Wang, Jun; Wu, Weiping
• Is Part Of: Journal of coordination chemistry. Volume 71:Issue 23(2018)
• Page Start: 3994
• Page End: 4006
• Publication Date: 2018-12-02
• Subjects: Fluorescence sensing -- coordination polymer -- 2, 4, 6-trinitrophenol -- nicotinoylhydrazone complex; Coordination compounds -- Periodicals; 541.2242
• DOI: 10.1080/00958972.2018.1536784
• Languages: English
• ISSNs: 0095-8972

Abstract

Abstract: Developing a fast and sensitive method for the detection of 2, 4, 6-trinitrophenol (TNP) or Cr2 O7 2– in aqueous solution has received great attention. In this work, a regenerable fluorescent coordination polymer [Zn(L)(H2 L)]n (1 ) has been successfully constructed using a novel Schiff base ligand N '-[(E)-(3, 5-dibromo-2-hydroxyphenyl)methylene]isonicotinohydrazide(H2 L) and exploited as a dual detection probe for the selective sensing of Cr2 O7 2– and TNP in water media. Competitive fluorometric experiments involving mixtures of anions or nitro compounds demonstrated 1 as an efficient and selective sensor for both Cr2 O7 2– and TNP. The limits of detection for Cr2 O7 2– and 2, 4, 6-trinitrophenol in aqueous solutions were found to be 11.4 and 1.19 μM, respectively. Moreover, 1 can detect TNP and Cr2 O7 2– in real water samples. All these features clearly demonstrate its great potential of practical TNP and Cr2 O7 2– detection in water media for public safety and security. Graphical Abstract: