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OALib Journal期刊
ISSN: 2333-9721
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通过Heck偶联反应制备具有pH响应的吡啶基团功能化的多孔材料
DOI: 10.6023/A15010054, PP. 623-628
Keywords: 多孔材料,pH响应性,荧光性能,溴代二苯乙烯基吡啶,四(4-苯乙烯基)硅烷
Abstract:
四(4-苯乙烯基)硅烷(TVBS)和溴代二苯乙烯基吡啶(Br-DSP)通过Heck偶联反应构筑以共价键连接的具有pH响应的新型多孔材料.材料具有良好的孔性能和热稳定性能,其比表面积为467m2·g-1,孔体积为0.41cm3·g-1.所得的多孔材料在273K/760mmHg条件下的CO2吸附量为2.96wt%.二苯乙烯基吡啶(DSP)单元的引入,使多孔材料具有优异的荧光性能,其中N原子作为质子化中心,使材料具有pH响应性.在固体状态下,材料的荧光最大发射波长在526nm;在pH＝1.00～4.50范围内,材料的荧光最大发射波长和相应的pH值成线性关系,表明该材料可用于酸性溶液的精确地快速检测.
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