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基于含2-硫代海因共轭聚合物的荧光探针

Fluorescent Probe Based on Poly(phenyleneethynylenes)Containing 2-thiohydantoin
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摘要 设计合成含2-硫代海因的小分子对照物1和聚苯撑乙炔poly(1)。通过一系列阴离子的正四丁基铵盐的DMSO溶液来评价聚合物的阴离子识别性能。加入F-后,poly(1)的DMSO溶液荧光淬灭;然而,加入Cl-,Br-,HSO-4,NO-3和CH3CO-2后,poly(1)溶液荧光不变,说明poly(1)对氟离子有荧光识别能力。Poly(1)对F-的Stern-Volmer淬灭常数为7.09×104M-1,相应地,对照物1对F-的Stern-Volmer淬灭常数为5.10×102M-1,说明了poly(1)具有增强淬灭效应。 Novel of small molecule counterpart and poly (phenyleneethynylenes)(1) bearing 2-thiohydantoin were synthesized.The anion sensing ability of poly ( 1 ) were estimated via the tetra -n-butylammonium ( TBA ) salts of a series of anions in DMSO.The addition of F -quenches the fluorescence , the fluorescence of the solution only changed slightly upon adding other anions of Cl -, Br-, HSO4-, NO3-and CH3CO2-, indicating the sensing ability of poly (1) towards F -.The Stern-Volmer quenching constant of poly (1) causes by F -was 7.09 ×104 M-1 , while that of the small molecule counterpart was 5.10 ×102 M-1 , indicating the amplified quenching effect of poly (1).
出处 《广州化工》 CAS 2014年第18期1-3,18,共4页 GuangZhou Chemical Industry
基金 国家自然科学基金(51173050 21376092) 广东省医学科研基金(A2010355)
关键词 2-硫代海因 阴离子识别 共轭聚合物 荧光传感器 2-thiohydantoin anion recognition conjugated polymer fluorescent sensor
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