论文部分内容阅读
选用带负电的谷胱甘肽包裹的金纳米簇(GSH-AuNCs)和牛血清白蛋白包裹的金纳米簇(BSA-AuNCs),与带正电荷的聚烯丙胺(PAH)通过静电作用以层层组装的方式制备了发黄色荧光的GSH-AuNCs/PAH薄膜和发红色荧光的BSA-Au NCs/PAH薄膜.在保证荧光强度的前提下,采用具有聚集诱导发光(AIE)效应的GSH-AuNCs能够大幅度降低薄膜厚度,有利于提高传感薄膜的响应速度和灵敏度.据此,以BSA-Au NCs/PAH薄膜作为参比层,GSH-AuNCs/PAH薄膜作为响应层,设计并构建了一种新型的比率荧光复合薄膜传感体系,并以2,4,6-三硝基甲苯(TNT)为例对其传感特性进行了研究.
Gold nanoclusters (GSH-AuNCs) and bovine serum albumin-coated gold nanoclusters (BSA-AuNCs) were coated with negatively charged glutathione, and positively charged polyallylamine (PAH) The prepared GSH-AuNCs / PAH film and the red fluorescent BSA-Au NCs / PAH film were prepared by the method of assembly.Using GSH-AuNCs with aggregation-induced luminescence (AIE) under the premise of ensuring the fluorescence intensity Which can greatly reduce the thickness of the film and improve the response speed and sensitivity of the sensing film.According to the above, taking the BSA-Au NCs / PAH film as the reference layer and the GSH-AuNCs / PAH film as the response layer, A new type of fluorescence sensing thin film sensing system was developed. The sensing properties of 2,4,6-trinitrotoluene (TNT) were also investigated.