Conjugated Polyelectrolytes with Aggregation-Enhanced Emission Characteristics: Synthesis and their Biological Applications
作者:Rongrong Hu、Ruquan Ye、Jacky W. Y. Lam、Min Li、Chris W. T. Leung、Ben Zhong Tang
DOI:10.1002/asia.201300501
日期:2013.10
a phenomenon of aggregation‐induced or ‐enhanced emission. The fluorimetric titrations of biomolecules such as heparin, calf thymus DNA, RNA, bovine serum albumin, and human serum albumin to buffer solutions of the polyelectrolytes suggest that they are promising fluorescent bioprobes with high sensitivity and fast response. The emission intensity of the polyelectrolytes is enhanced by up to sevenfold
共轭聚电解质是构建荧光生物探针的有前途的候选者。在这项研究中,已经设计和合成了一系列水溶性荧光聚电解质,方法是将它们含四苯乙烯的聚炔前体进行季铵化。可以通过Hay-Glaser聚合物偶联轻松制备高分子量(最高38 900)的高产率(最高99%)的聚炔。所有聚合物均表现出聚集诱导或增强发射的现象。用荧光滴定法对肝素,小牛胸腺DNA,RNA,牛血清白蛋白和人血清白蛋白等生物分子进行聚电解质的缓冲溶液的滴定表明,它们是具有高灵敏度和快速响应性的有前途的荧光生物探针。与生物分子通过静电和疏水协作相互作用结合后,聚电解质的发射强度提高多达七倍。聚电解质还可以用作具有良好生物相容性和低自发荧光干扰的细胞内成像的荧光显像剂。