结晶度
材料科学
金属有机骨架
四氰基对醌二甲烷
纳米技术
导电体
拉曼光谱
导电聚合物
电导率
导电的
电阻率和电导率
聚合物
光电子学
分子
复合材料
化学
有机化学
工程类
物理化学
吸附
物理
光学
电气工程
作者
Lars Lüder,Ágnes Gubicza,Michael Stiefel,Jan Overbeck,Davide Beretta,Amin Sadeghpour,A. Neels,Peter N. Nirmalraj,René M. Rossi,Claudio Toncelli,Michel Calame
标识
DOI:10.1002/aelm.202100871
摘要
Abstract Electrically conductive metal–organic frameworks (MOFs) and MOF‐like coordination polymers are an emerging class of materials that combine good electrical charge transport with unique properties such as nanoporosity. The combination of different metal nodes and organic linkers allows tailoring MOFs to specific properties and applications in electronics, like selective chemiresistive sensing. The intrinsic crystallinity of MOFs, which usually promotes efficient charge transport, makes them also difficult to integrate into flexible systems, as crystalline MOFs are often brittle. The present study reports on a fast and reliable interfacial synthesis of conductive MOF films composed of two different organic ligands, 2,3,6,7,10,11‐hexahydroxytriphenylene (HHTP) and 7,7,8,8‐tetracyanoquinodimethane (TCNQ), lacking long‐range periodic order while preserving good electrical conductivity of 0.033 S cm −1 at room temperature and chemiresistive response toward ambient changes. The hybrid nature of the discontinuous film is investigated multiparametrically by electron and atomic force microscopy as well as by Raman spectroscopy. This study demonstrates that including different types of MOFs is a good compromise between structural order and conductivity, thus making hybrid framework architectures to a promising active material for chemiresistive sensors without the need for high crystallinity.
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