Abstract
2D conjugated metal–organic frameworks (2D c-MOFs) are emerging as electroactive materials for chemiresistive sensors, but selective sensing with fast response/recovery is a challenge. Phthalocyanine-based Ni2[MPc(NH)8] 2D c-MOF films are presented as active layers for polarity-selective chemiresisitors toward water and volatile organic compounds (VOCs). Surface-hydrophobic modification by grafting aliphatic alkyl chains on 2D c-MOF films decreases diffused analytes into the MOF backbone, resulting in a considerably accelerated recovery progress (from ca. 50 to ca. 10 s) during humidity sensing. Toward VOCs, the sensors deliver a polarity-selective response among alcohols but no signal for low-polarity aprotic hydrocarbons. The octadecyltrimethoxysilane-modified Ni2[MPc(NH)8] based sensor displays high-performance methanol sensing with fast response (36 s)/recovery (13 s) and a detection limit as low as 10 ppm, surpassing reported room-temperature chemiresistors.
Original language | English |
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Pages (from-to) | 18666-18672 |
Number of pages | 7 |
Journal | Angewandte Chemie - International Edition |
Volume | 60 |
Issue number | 34 |
DOIs | |
Publication status | Published - 2021 Aug 16 |
Bibliographical note
Funding Information:We thank financial support from ERC Starting Grant (FC2DMOF, No. 852909), ERC Consolidator Grant (T2DCP), Coordination Networks: Building Blocks for Functional Systems (SPP 1928, COORNETs), EU Graphene Flagship (GrapheneCore3, No. 881603), DFG project (CRC 1415, No. 417590517), H2020-MSCA-ITN (ULTIMATE, No. 813036), H2020-FETOPEN (PROGENY, 899205), the German Science Council, Center for Advancing Electronics Dresden (EXC1056), and Dresden Center for Intelligent Materials (DCIM) by the Free State of Saxony and TU Dresden. We acknowledge Elettra Sincrotrone Trieste for providing access to its synchrotron radiation facilities and we thank Luisa Barba for assistance in using beamline XRD1. We appreciate the Dresden Center for Nanoanalysis (DCN) for the use of facility, and Dr. Mao Wang, Dr. Zhongquan Liao, as well as Dr. Tilo Lübken for variable-temperature conductivity, HR-TEM, and NMR measurement, respectively. We thank Dr. Yu Zhang, Dr. Tao Zhang, and Huanhuan Shi for helpful discussions. Open access funding enabled and organized by Projekt DEAL.
Funding Information:
We thank financial support from ERC Starting Grant (FC2DMOF, No. 852909), ERC Consolidator Grant (T2DCP), Coordination Networks: Building Blocks for Functional Systems (SPP 1928, COORNETs), EU Graphene Flagship (GrapheneCore3, No. 881603), DFG project (CRC 1415, No. 417590517), H2020‐MSCA‐ITN (ULTIMATE, No. 813036), H2020‐FETOPEN (PROGENY, 899205), the German Science Council, Center for Advancing Electronics Dresden (EXC1056), and Dresden Center for Intelligent Materials (DCIM) by the Free State of Saxony and TU Dresden. We acknowledge Elettra Sincrotrone Trieste for providing access to its synchrotron radiation facilities and we thank Luisa Barba for assistance in using beamline XRD1. We appreciate the Dresden Center for Nanoanalysis (DCN) for the use of facility, and Dr. Mao Wang, Dr. Zhongquan Liao, as well as Dr. Tilo Lübken for variable‐temperature conductivity, HR‐TEM, and NMR measurement, respectively. We thank Dr. Yu Zhang, Dr. Tao Zhang, and Huanhuan Shi for helpful discussions. Open access funding enabled and organized by Projekt DEAL.
Publisher Copyright:
© 2021 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH
All Science Journal Classification (ASJC) codes
- Catalysis
- Chemistry(all)