Layer-by-layer self-assembly of polyelectrolyte functionalized MoS2 nanosheets.
Few-layered polyelectrolyte functionalized MoS2 nanosheets were obtained for the first time through in situ polymerization of MoS2 nanosheets with poly(acrylic acid) and poly(acrylamide), both of which demonstrated excellent dispersibility and stability in water. After designing and optimizing the components of this series of polyelectrolyte functionalized MoS2 nanosheets, by exploiting the electrostatic interactions present in the modified MoS2 nanosheets, we further created a series of layer-by-layer (LBL) self-assembling MoS2-based films. To this end, uniform MoS2 nanosheet-based LBL films were precisely deposited on substrates such as quartz, silicon, and ITO. The polyelectrolyte functionalized MoS2 nanosheet assembled LBL film-modified electrodes demonstrated enhanced electrocatalytic activity for H2O2. As such, they are conducive to efficient sensors and advanced biosensing systems.
Institute of special materials and technology, Fudan University, 200433, Shanghai, China. mxye@fudan.edu.cn and Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Jianfeng
J
Shen
Institute of special materials and technology, Fudan University, 200433, Shanghai, China. mxye@fudan.edu.cn.
Yu
Y
Pei
Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Pei
P
Dong
Institute of special materials and technology, Fudan University, 200433, Shanghai, China. mxye@fudan.edu.cn.
Jin
J
Ji
Institute of special materials and technology, Fudan University, 200433, Shanghai, China. mxye@fudan.edu.cn.
Zheng
Z
Cui
Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Junhua
J
Yuan
Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Robert
R
Baines
Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, TX 77005, USA.
Pulickel M
PM
Ajayan
Institute of special materials and technology, Fudan University, 200433, Shanghai, China. mxye@fudan.edu.cn.
Mingxin
M
Ye