Journal of Inorganic Materials ›› 2019, Vol. 34 ›› Issue (8): 844-850.DOI: 10.15541/jim20180506

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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. 1. College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao 028043, China
    2. School of Chemistry & Environment Engineering, Changchun University of Science and Technology, Changchun 130022, China;
  • Received:2018-10-26 Revised:2018-12-10 Published:2019-08-20 Online:2019-05-29
  • Supported by:
    National Natural Science Foundation of China(21501102);National Natural Science Foundation of China(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 Projects Founded by Inner Mongolia Key Laboratory for the Natural Products Chemistry and Functional Molecular Synthesis(MDK2016010)

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 polyoxometalates TbW10 and good film-forming matrix agarose. Composition and structure of the films were characterized by FT-IR and Raman spectrum. Thir thickness, surface roughness and microstructure were studied by SEM, AFM and TEM, respectively. And effects of different TbW10 contents on the transmittance and luminescence properties were investigated. On this basis, the reversible chemically responsive luminescent switching performance of TbW10-Agarose green luminescent 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. And the fluorescence spectrum detection for HCl gas was extended based on the green luminescent thin film sensor with a detection limit of 0.2731 mmol·L -1.

Key words: polyoxometalates, stimuli-responsive, luminescent switch, thin film sensor

CLC Number: