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Multi-functional Photoelectric Sensor Based on a Three-fold Interpenetrated Cd(II) Coordination Polymer for Sensitive Detecting Different Ions

A three-fold interpenetrated cadmium coordination polymer [Cd3(BTC)2(H2O)9]·2H2O (CP 1) (H3BTC =1,3,5-benzenetricarboxylic acid) was selected and synthesized to investigate its photoelectric properties. CP 1 showed excellent sensitivity for Cr2O72- and Fe3+, low limit of detection (LOD: 0.39 μM for Cr2O72- and 1.72 μM for Fe3+) and stability as electrochemical sensor. More importantly, fluorescence sensing studies indicated that CP 1 exhibit sensing activity for Fe3+, Fe2+, and MnO4- with good cyclic stability and selectivity. Low LOD and high-sensitivity capability of CP 1 make it being a potential multifunctional photoelectric sensor.   

  1. College of Chemistry and Materials Engineering, Bohai University, Pro-fessional Technology Innovation Center of Liaoning Province for Conver-sion Materials of Solar Cell, Jinzhou 121013, P. R. China.
  • Received:2021-11-04 Revised:2021-12-06 Accepted:2021-12-08
  • Contact: Xiuli Wang wangxiuli@bhu.edu.cn
  • Supported by:
    the National Natural Science Foundation of China (Nos. 21971024, 21671025) and Liao Ning Revitalization Talents Program (XLYC1902011).

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Abstract: A three-fold interpenetrated cadmium coordination polymer [Cd3(BTC)2(H2O)9]·2H2O (CP 1) (H3BTC =1,3,5-benzenetricarboxylic acid) was selected and synthesized to investigate its photoelectric properties. CP 1 showed excellent sensitivity for Cr2O72- and Fe3+, low limit of detection (LOD: 0.39 μM for Cr2O72- and 1.72 μM for Fe3+) and stability as electrochemical sensor. More importantly, fluorescence sensing studies indicated that CP 1 exhibit sensing activity for Fe3+, Fe2+, and MnO4- with good cyclic stability and selectivity. Low LOD and high-sensitivity capability of CP 1 make it being a potential multifunctional photoelectric sensor.

Key words: coordination polymer, photoelectric sensor, electrochemistry sensing, fluorescence sensing, Cr2O72- and MnO4-