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Preparation and Chemically Responsive Luminescent Switching of the Flexible Self-supporting TbW10-Agarose Green-emission Thin Films

WANG Bin1 ZHENG Jin-Hui1 WANG Xiao-Hong1 ZHAO Bo2 XU Liang1 LIU Zong-Rui1

(1.College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao, China 028043)
(2.School of Chemistry & Environment Engineering, Changchun University of Science and Technology, Changchun, China 130022)

【Abstract】Flexible self-supporting TbW10-Agarose composite thin films were prepared by combination of sol-gel and casting technique based on the functional complementarity between excellent green luminescence polyoxometalate TbW10 and good film-forming matrix agarose. Composition and structure of the films were characterized by FT-IR and Raman spectra. Their thickness, surface roughness and microstructure were studied by SEM, AFM and TEM, respectively. The effects of TbW10 content on the transmittance and luminescence properties were investigated. On this basis, the reversible chemically responsive luminescent switching performance of TbW10-Agarose green-emission thin film was realized under stimulation of HCl and NH3. The response time and reversibility of chemically responsive luminescent switching performance were studied by fluorescence kinetics curves. The fluorescence spectrum detection for HCl gas was achieved based on the green-emission thin film sensor with a detection limit of 0.273 1 mmol·L–1.

【Keywords】 polyoxometalates; stimuli-responsive; luminescent switch; thin film sensor;


【Funds】 National Natural Science Foundation of China (21501102, 21501014) Natural Science Foundation of Inner Mongolia, China (2015BS0207) Program for Young Talents of Science and Technology in Universities of Inner Mongolia Autonomous Region (NJYT-18-B22) Open Project of Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis (MDK2016010)

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This Article


CN: 31-1363/TQ

Vol 34, No. 08, Pages 844-850

August 2019


Article Outline


  • 1 Experimental method
  • 2 Chemically responsive luminescent switching performance of TbW10-Agarose green-emission thin film
  • 3 Conclusions
  • References