A water-soluble cationic conjugated polyelectrolyte (P1) containing fluorene, BODIPY and diacetylene moieties was synthesized and characterized. P1 showed two main absorption bands with maxima at 360 and 574 nm as well as fluorescence maxima at 648 nm due to the incorporation of BODIPY into the polymer backbone. Addition of CT DNA can quench the emission of P1 because of the formation of a P1/CT DNA complex, which was demonstrated by UV–vis spectra and dynamic light scattering (DLS) analyses. Cellular imaging results indicated P1 could be utilized as cellular imaging of HeLa cells, where red fluorescence was observed in the partial cytoplasm. Moreover, CCK-8 assay showed P1 had a low cytotoxicity.
合成并表征了一种
水溶性阳离子共轭聚电解质(P1),其包含
氟烯、BODIPY和二炔基部分。P1显示出两个主要的吸收带,最大吸收波长分别为360和574 nm,并且由于BODIPY的引入,其荧光最大波长为648 nm。加入CT DNA可以淬灭P1的发光,这是由于形成了P1/CT DNA复合物,UV-Vis光谱和动态光散射(DLS)分析验证了这一点。细胞成像结果表明,P1可以作为HeLa细胞的细胞成像探针,在部分细胞质中观察到了红色荧光。此外,CCK-8实验表明P1具有低细胞毒性。