Departamento de Química Física and Unidad Asociada CSIC, Universidade de Vigo, 36310 Vigo, Spain.
ACS Nano. 2009 Oct 27;3(10):3184-90. doi: 10.1021/nn9006169.
Novel colloidal composites have been designed to incorporate multiple functionalities that allow optical detection, magnetic manipulation, molecular trapping, and thermal response. Such particles are made of gold nanoparticle cores covered by a thin layer of metallic nickel and a poly(N-isopropylacrylamide) (pNIPAM) shell. While the gold cores provide efficient optical response through localized surface plasmon resonances, nickel allows external magnetic manipulation and the pNIPAM shell can be swollen or collapsed as a function of temperature, thus allowing capture and release of various types of molecules.
新型胶体复合材料的设计结合了多种功能，包括光学检测、磁操控、分子捕获和热响应。这些粒子由金纳米颗粒核心组成，表面覆盖一层薄的金属镍和一层聚（N-异丙基丙烯酰胺）（pNIPAM）壳。金核通过局域表面等离子体共振提供高效的光学响应，镍允许外部磁操控，而 pNIPAM 壳可以随温度膨胀或收缩，从而允许捕获和释放各种类型的分子。
