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Published on: February 7, 2017
New Cd(II)-based 3,5-bis(3'-carboxy-phenoxyl)-1,2,4-triazole appended coordination polymers with varied imine
Xiaohong Liu1, Jingyi Liang2, Lu Lu2
1Chongqing University, Shapingba, Chongqing, 400044, PR China; Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing, 400714, PR China; Chongqing School, University of Chinese Academy of Sciences, Chongqing, 400714, PR China.
Novel cadmium coordination polymers offer a new method for detecting multiple aquatic pollutants. These materials provide rapid, on-site sensing of baicalin, Fe3+, and CrO42- in water.
Area of Science:
- Materials Science
- Environmental Chemistry
- Analytical Chemistry
Background:
- Traditional fluorescence sensing faces challenges with complex aquatic pollutants.
- The "one-sensor-one-target" approach limits rapid and efficient detection.
- Developing versatile sensing materials is crucial for environmental monitoring.
Purpose of the Study:
- To synthesize novel Cd(II)-based coordination polymers for fluorescent sensing.
- To investigate their sensing capabilities for multiple aquatic pollutants.
- To explore their potential for on-site and real-time environmental contaminant detection.
Main Methods:
- Synthesis of three Cd(II)-coordination polymers using H2L and auxiliary ligands (bib, phen, bipy).
- Photoluminescence spectroscopy to evaluate sensing performance for baicalin, Fe3+, and CrO42-.
- Fabrication of test strips for practical application and analysis of sensing mechanisms.
Main Results:
- Coordination polymer 1 demonstrated excellent photoluminescence sensing for baicalin (1.32 μM), Fe3+ (10.6 μM), and CrO42- (48.1 μM).
- Sensing mechanisms involved inner filter effect, energy transfer, and non-covalent interactions.
- Fabricated test strips showed user-friendly operation and rapid response for pollutant identification.
Conclusions:
- Novel Cd(II)-coordination polymers show high efficiency for detecting multiple aquatic pollutants.
- The developed materials offer a promising pathway for on-site, real-time environmental monitoring.
- This research addresses limitations of traditional sensing strategies with a versatile approach.
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