writer：Peng Xiao, JC Gu, CJ Wan, S Wang, J He, JW Zhang, YJ Huang, Shiao-Wei Kuo, Tao Chen*
keywords：Capillary force, Langmuir-Blodgett, self-assembly, carbon nanotube thin film, sensor
source：期刊
specific source：Chemistry of Materials, 2016, 28, 7125–7133
Issue time：2016年
Langmuir-Blodgett (LB) technique has been demonstrated as the most popular way to achieve freestanding 2D CNTs thin films on the surface of liquid, yet still suffers some limitations such as the need of expensive instruments with complicated surface pressure detecting and time consuming processes, and thus inaccessible to a large number of researchers. Here, we present a cheap, reliable and ultrafast strategy to fabricate free-standing 2D CNTs networks on air/water interface by a highly simplified LB method with instruments free, yet only with porous materials assisted capillary force driving compression. The formation of free-standing 2D CNTs networks with controlled thickness, transmittance and conductivity could be further transferred to other various substrates. Growing polymer from one side of the flexible CNTs network allows us to achieve 2D hybrid Janus materials of polymer grafted CNTs thin films. This endows the conductive 2D CNTs hybrid networks with responsive chemical functionality, which is highly important for scalable developments as next generation flexible electronics in chemical sensing.