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Large‐Area, Free‐Standing, Two‐Dimensional Supramolecular Polymer Single‐Layer Sheets for Highly Efficient Electrocatalytic Hydrogen Evolution
Author(s) -
Dong Renhao,
Pfeffermann Martin,
Liang Haiwei,
Zheng Zhikun,
Zhu Xiang,
Zhang Jian,
Feng Xinliang
Publication year - 2015
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201506048
Subject(s) - overpotential , tafel equation , materials science , carbon nanotube , supramolecular chemistry , catalysis , nanotechnology , heteroatom , graphene , polymer , chemical engineering , electrochemistry , chemistry , organic chemistry , molecule , electrode , ring (chemistry) , composite material , engineering
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.