Affiliation:
1. State Key Laboratory of Coordination Chemistry Key Laboratory of Mesoscopic Chemistry of MOE School of Chemistry and Chemical Engineering Nanjing University Nanjing 210023 P. R. China
2. School of Chemistry and Chemical Engineering Nanjing University of Science and Technology Nanjing 210094 P. R. China
3. Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou 450001 P. R. China
Abstract
AbstractMetal–organic frameworks (MOFs), with diverse metal nodes and designable organic linkers, offer unique opportunities for the rational engineering of semiconducting properties. In this work, we report a mixed‐linker conductive MOF system with both tetrathiafulvalene and Ni‐bis(dithiolene) moieties, which allows the fine‐tuning of electronic structures and semiconductive characteristics. By continuously increasing the molar ratio between tetrathiafulvalene and Ni‐bis(dithiolene), the switching of the semiconducting behaviors from n‐type to p‐type was observed along with an increase in electrical conductivity by 3 orders of magnitude (from 2.88×10−7 S m−1 to 9.26×10−5 S m−1). Furthermore, mixed‐linker MOFs were applied for the chemiresistive detection of volatile organic compounds (VOCs), where the sensing performance was modulated by the corresponding linker ratios, showing synergistic and nonlinear modulation effects.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Beijing National Laboratory for Molecular Sciences
Natural Science Foundation of Jiangsu Province