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Conductive Metallophthalocyanine Framework Films with High Carrier Mobility as Efficient Chemiresistors
Author(s) -
Yue Yan,
Cai Peiyu,
Xu Xiaoyi,
Li Hanying,
Chen Hongzheng,
Zhou HongCai,
Huang Ning
Publication year - 2021
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.202100717
Subject(s) - electrical conductor , materials science , nanotechnology , doping , annulene , conductivity , electrical resistivity and conductivity , electron mobility , conductive polymer , cobalt , thin film , optoelectronics , polymer , chemistry , electrical engineering , composite material , organic chemistry , metallurgy , engineering
The poor electrical conductivity of two‐dimensional (2D) crystalline frameworks greatly limits their utilization in optoelectronics and sensor technology. Herein, we describe a conductive metallophthalocyanine‐based NiPc‐CoTAA framework with cobalt(II) tetraaza[14]annulene linkages. The high conjugation across the whole network combined with densely stacked metallophthalocyanine units endows this material with high electrical conductivity, which can be greatly enhanced by doping with iodine. The NiPc‐CoTAA framework was also fabricated as thin films with different thicknesses from 100 to 1000 nm by the steam‐assisted conversion method. These films enabled the detection of low‐concentration gases and exhibited remarkable sensitivity and stability. This study indicates the enormous potential of metallophthalocyanine‐based conductive frameworks in advanced stand‐off chemical sensors and provides a general strategy through tailor‐make molecular design to develop sensitive and stable chemical sensors for the detection of low‐concentration gases.