The synthesis of a smart streptavidin-functionalized poly(N-isopropylacrylamide) composite and its application in the separation and detection of virus nucleic acid.
通过偶联剂NAS将热敏聚合物聚(N-异丙基丙烯酰胺)(PNIPAAm)与链霉亲和素(SA)共价连接,制备智能聚合物复合体PNIPAAm-co-SA。DSC显示其LCST仍为32°C,可在低温溶胀与高温收缩沉淀之间可逆转变。利用SA与生物素的高亲和力,该复合体在PBS中对生物素标记物捕获效率接近100%,在血清中高于70%,且经三次加...