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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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铱配合物为能量受体的阴离子型聚芴合成及其蛋白质多糖检测
DOI: 10.11777/j.issn1000-3304.2014.14117, PP. 1629-1634
Keywords: 铱配合物,阴离子聚芴,荧光能量转移,蛋白质
Abstract:
用Suzuki偶合方法合成了一系列铱配合物为能量受体,侧链为羧酸基团的阴离子型水溶性聚芴.聚芴(P4,P5,P6)中铱配合物含量分别为0%,2%和5%,聚芴P6在水溶液中具有较好的荧光能量荧光转移(FRET)效率.还研究了pH变化对聚合物水溶液荧光光谱性能的影响,结果表明当pH>8时,所含羧基以钠盐形式存在使聚合物具有较好的溶解性和较强的荧光强度,pH<8时,羧基以COOH形式存在,使聚合物溶解度降低造成聚集,荧光发生淬灭.并且进一步研究了不同的蛋白质和多糖对铱配合物含量为5%的聚合物(P6)的荧光光谱变化,如加入带正电荷的溶菌酶后可以发生比较明显的FRET现象,加入中性的血红蛋白后荧光强度略有下降,而疏水作用较强的组蛋白和带负电荷肝素的加入可以增强P6的荧光强度减弱聚合物的FRET,因此聚合物P6可以作为蛋白质和多糖的光学检测器.
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