A "signal-on" chemiluminescence biosensor for thrombin detection based on DNA functionalized magnetic sodium alginate hydrogel and metalloporphyrinic metal-organic framework nanosheets.

本文建立了一种用于检测凝血酶的“信号增强”化学发光生物传感器。以海藻酸钠与Ca2+物理交联并负载Fe3O4纳米颗粒，制备磁性海藻酸钠水凝胶，再经EDC/NHS偶联凝血酶适配体Apt1，得到Malg-Apt1，用于从复杂体液中分离和富集凝血酶；随后用EDTA螯合Ca2+溶解水凝胶并释放凝血酶。同时制备金属卟啉金属有机框架纳米片Cu-T...