writer：Yanqiong Yang, Wenqin Wang, Tao Chen
keywords：superstructures, tunable morphology, self-assembly, three-dimension, polymer brushes, SERS
source：期刊
specific source：ACS Appl. Mater. Interfaces, 2014, 6, 21468?21473
Issue time：2014年
Construction of superstructures with controllable morphologies from NPs is of great scientific and technological importance. A one-step method for simultaneous synthesis and assembly of Ag NPs to three-dimensional (3D) nanoporous superstructures is demonstrated. By varying the adsorption time of Ag precursors inside polymer brushes, an array of well-defined Ag superstructures with different morphologies are harvested. A “hot spot”-rich substrate for surface-enhanced Raman spectroscopy is established, which exhibits high sensitivity in trace detection of molecules. It is believed the presented 3D nanoporous Ag superstructures hold great potential for various uses, such as novel multifunctional sensing and monitoring chips or devices.