A disulfur ligand stabilization approach to construct a silver(i)-cluster-based porous framework as a sensitive SERS substrate. Issue 35 (29th August 2019)

• Record Type: Journal Article
• Authors: Wu, Tong; Yin, Di; Hu, Xun; Yang, Bo; Liu, Hong; Xie, Yun-Peng; Liu, Shi-Xi; Ma, Lulu; Gao, Guang-Gang
• Is Part Of: Nanoscale. Volume 11:Issue 35(2019)
• Page Start: 16293
• Page End: 16298
• Publication Date: 2019-08-29
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c9nr05301h
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : An atomic-precise silver(i )-cluster-based MOF (UJN-1 ) stabilized by disulfur ligand has been demonstrated. Its reduced derivative exhibits highly sensitive SERS activity that can be ascribed to abundant hot spots sites and porosity structure. Abstract : An atomically-precise silver(i )-cluster-based three-dimensional (3D) framework (UJN-1 ) stabilized by a ditiocarb (diethyldithiocarbamate) ligand has been unveiled for the first time by self-assembly.UJN-1 is composed of both Ag9 clusters and Ag5 subunits, of which the Ag9 clusters are bonded with Ag5 subunits by sharing the ditiocarb ligand to form a microporous 3, 4-connected topological framework. The chemically reduced nano-sized derivative ofUJN-1 exhibits highly sensitive surface enhanced Raman scattering (SERS) towards 4-mercaptobenzoic acid (4-MBA) signal molecules, which is ascribed to the porosity as well as the distribution of abundant crystalline Ag 0 active sites. This work sheds light on a new bottom-up approach to construct SERS-active silver(i )-cluster-based 3D materials by disulfur ligand stabilization.