Tsuchido Yuji, Yamasawa Aya, Hashimoto Takeshi, Hayashita Takashi
Department of Materials and Life Sciences, Faculty of Science and Technology, Sophia University.
Anal Sci. 2018 Oct 10;34(10):1125-1130. doi: 10.2116/analsci.18P153. Epub 2018 Jun 1.
Dipicolylamine-modified fluorescent silica nanoparticles were prepared by introducing dipicolylamine to the surface of silica nanoparticles possessing terminal amines. We examined the selectivities of dipicolylamine-hydroxycoumarin carbonate (dpa-HCC) and dpa-HCC/fluorescent silica nanoparticles (FSiNP) for metal ions and phosphate anions. The dipicolylamine-modified silica nanoparticles responded to PPi, Tri and Pb, indicating novel selectivity derived from the assembly effect of dpa-HCC on the silica nanoparticle surface. Surface-modified fluorescent silica nanoparticles are expected to be used as a sensor for environmental and biological applications.
通过将二吡啶甲胺引入具有末端胺基的二氧化硅纳米颗粒表面，制备了二吡啶甲胺修饰的荧光二氧化硅纳米颗粒。我们研究了二吡啶甲胺 - 羟基香豆素碳酸酯（dpa - HCC）和dpa - HCC/荧光二氧化硅纳米颗粒（FSiNP）对金属离子和磷酸根阴离子的选择性。二吡啶甲胺修饰的二氧化硅纳米颗粒对焦磷酸（PPi）、三磷酸（Tri）和铅有响应，表明dpa - HCC在二氧化硅纳米颗粒表面的组装效应产生了新的选择性。表面修饰的荧光二氧化硅纳米颗粒有望用作环境和生物应用的传感器。
