A novel optical DNA biosensor for detection of trace amounts of mercuric ions using gold nanoparticles introduced onto modified glass surface.

本文报道了一种用于痕量汞离子（Hg2+）检测的DNA分光光度生物传感器。该传感器将一对含四个胸腺嘧啶-胸腺嘧啶（T-T）错配碱基的寡核苷酸固定于修饰玻璃表面。首先，玻璃表面用3-(巯基丙基)三甲氧基硅烷（MPTS/MSPT）和约30 nm金纳米颗粒（AuNPs）修饰；5'端以巯基己醇修饰的寡核苷酸P1通过Au-S自组装固定于AuNP...