title: Large-area, free-standing, two-dimensional supramolecular polymer single-layer sheets for highly efficient electrocatalytic hydrogen evolution.
abstract: The rational construction of covalent or noncovalent organic two-dimensional nanosheets is a fascinating target because of their promising applications in electronics, membrane technology, catalysis, sensing, and energy technologies. Herein, a large-area (square millimeters) and free-standing 2D supramolecular polymer (2DSP) single-layer sheet (0.7-0.9 nm in thickness), comprising triphenylene-fused nickel bis(dithiolene) complexes has been readily prepared by using the Langmuir-Blodgett method. Such 2DSPs exhibit excellent electrocatalytic activities for hydrogen generation from water with a Tafel slope of 80.5 mV decade(-1) and an overpotential of 333 mV at 10 mA cm(-2) , which are superior to that of recently reported carbon nanotube supported molecular catalysts and heteroatom-doped graphene catalysts. This work is promising for the development of novel free-standing organic 2D materials for energy technologies.
authors: Department of Chemistry and Food Chemistry, and Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden (Germany).
authors: Renhao
authors: R
authors: Dong
authors: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz (Germany).
authors: Martin
authors: M
authors: Pfeffermann
authors: Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz (Germany).
authors: Haiwei
authors: H
authors: Liang
authors: Department of Chemistry and Food Chemistry, and Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden (Germany).
authors: Zhikun
authors: Z
authors: Zheng
authors: Department of Chemistry and Food Chemistry, and Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden (Germany).
authors: Xiang
authors: X
authors: Zhu
authors: Department of Chemistry and Food Chemistry, and Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden (Germany).
authors: Jian
authors: J
authors: Zhang
authors: Department of Chemistry and Food Chemistry, and Center for Advancing Electronics Dresden, Technische Universität Dresden, 01062 Dresden (Germany). xinliang.feng@tu-dresden.de.
authors: Xinliang
authors: X
authors: Feng
keywords: electrocatalysis; hydrogen evolution reaction; nanostructures; polymers; supramolecular chemistry