摘要
基于功能互补原理,将Dawson型多阴离子P_2W_(18)O_(62)^(6-)可逆的电致变色性质与Tb^(3+)优异的发光性质相结合,在外加氧化还原电位下实现了P_2W_(18)O_(62)^(6-)@Tb^(3+)混合溶液可逆的电致变色及荧光开关性能,考察外加还原电位对电致变色响应时间及荧光开关能量转移效率的影响,在-0.38、-0.69、-0.85 V下混合溶液的能量转移效率分别为85.97%、87.53%、93.42%。在此基础上,将电化学还原与化学氧化相结合实现了P_2W_(18)O_(62)^(6-)@Tb^(3+)混合溶液对H_2O_2紫外可见、荧光双光谱检测,紫外可见、荧光光谱法对H_2O_2的检出限分别为1.76×10^(-2)、3.04μmol·L^(-1)。
Based on the functional complementarity between the reversible electrochromic property of the Dawson type polyanions P2W18O62 6- and the excellent luminescent property of Tb3+, the reversible electrochromic and luminescent switching properties of P2W18O62 6-@Tb3+ mixed solution were achieved under redox potential stimulation. The effects of applied reduction potential on electrochromic response time and the energy transfer efficiency of luminescent switch were investigated. And the energy transfer efficiency of the mixed solution P2W18O62 6-@Tb3+ were 85.97%, 87.53% and 93.42% when applied different reduction potential -0.38,-0.69 and -0.85 V, respectively. On this basis, the UV-Vis and fluorescence spectroscopy bi-functional detection for H2O2 were realized by combining electrochemical reduction with chemical oxidation methods. The detection limits for H2O2 were 1.76×10-2 and 3.04 μmol·L-1 by the UV-Vis and fluorescence spectroscopy, respectively.
作者
王斌
郑金慧
刘哲林
王晓红
段莉梅
白锁柱
许良
刘宗瑞
WANG Bin;ZHENG Jin-Hui;LIU Zhe-Lin;WANG Xiao-Hong;DUAN Li-Mei;BAI Suo-Zhu;BAI Suo-Zhu;LIU Zong-Rui(College of Chemistry and Chemical Engineering, Inner Mongolia University for the Nationalities, Tongliao, Inner Mongolia 028043, China;Key Laboratory of the Natural Products Chemistry and Functional Molecular Synthesis of Autonomous Region, Tongliao, Inner Mongolia 028000, China;School of Chemistry & Environment Engineering,Changchun University of Science and Technology, Changchun 130022, China)
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2019年第3期385-392,共8页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金(No.21501102
21661026)
内蒙古自治区自然科学基金(No.2015BS0207)
内蒙古自治区高等学校"青年科技英才支持计划"(No.NJYT-18-B22)
天然产物化学及功能分子合成自治区重点实验室开放课题(No.MDK2016010)资助项目
关键词
多金属氧酸盐
电化学
电致变色
荧光开关
荧光光谱
polyoxometalates
electrochemistry
electrochromism
fluorescence switch
fluorescence spectroscopy
