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3D ZnII-Based coordination polymer: Synthesis, structure and fluorescent sensing property for nitroaromatic compounds.
Wang, Yan-Ning; Xu, Hao; Wang, Shao-Dan; Feng, Wu-Yi; Mo, Yuan; Bai, Jun-Tai; Qiu, Qing-Chen; Wang, Yi-Tong; Zhang, Meng-Han; Yang, Qing-Feng.
Afiliação
  • Wang YN; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China. Electronic address: wyn124@163.com.
  • Xu H; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
  • Wang SD; Key Laboratory of Pesticide & Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China.
  • Feng WY; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
  • Mo Y; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
  • Bai JT; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
  • Qiu QC; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
  • Wang YT; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
  • Zhang MH; College of Chemistry and Chemical Engineering, Xinyang Normal University, Xinyang, Henan 464000, China.
  • Yang QF; State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China.
Spectrochim Acta A Mol Biomol Spectrosc ; 297: 122708, 2023 Sep 05.
Article em En | MEDLINE | ID: mdl-37043837
ABSTRACT
A water-stable ZnII-based coordination polymer (CP) with excellent photophysical behavior, namely [Zn2L(atez)(H2O)2] (compound 1; H3L = 4-(2',3'-dicarboxylphenoxy); atez = 5-aminotetrazole), was successfully prepared by the solvothermal reaction of Zn ions with a π-conjugated and semi-rigid multicarboxylate ligand H3L in the presence of N-containing linker atez. Compound 1 displays a hierarchically pillared three-dimensional (3D) (3,4,5)-connected (4·62) (42·64) (43·64·83) net which is based on two-dimensional (2D) multicarboxylate- ZnII layers strutted by the atez ligands. Sensing investigations of compound 1 reveal that this material can selectively and sensitively detect nitroaromatic compounds in water suspension through fluorescence quenching effect. In particular, it is worth noting that it shows highly specific detection of nitrobenzene (NB) and 2,4,6-trinitrophenol (TNP) with remarkable quenching constants (KSV = 7.5 × 104 M-1 for NB and KSV = 1.9 × 105 M-1 for TNP) and low limit of detection (LOD = 0.93 µM for NB and LOD = 0.36 µM for TNP). Investigations reveal that the probable mechanisms for such sensing processes are the concurrent presence of fluorescence resonance energy transfer (FRET) as well as photoinduced electron transfer (PET) between the CP and nitroaromatic molecules. This work not only offers an effective route to improve the application of fluorescent CPs but also provide one novel probable fluorescence probe for nitroaromatic compounds.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Ano de publicação: 2023 Tipo de documento: Article