| Title: | Surface-Modified Phthalocyanine-Based Two-Dimensional Conjugated Metal-Organic Framework Films for Polarity-Selective Chemiresistive Sensing |
| Author(s): | Wang M; Zhang Z; Zhong H; Huang X; Li W; Hambsch M; Zhang P; Wang Z; St Petkov P; Heine T; Mannsfeld SCB; Feng X; Dong R; |
| Address: | "Center for Advancing Electronics Dresden (cfaed) and Faculty of Chemistry and Food Chemistry, Technische Universitat Dresden, 01062, Dresden, Germany. Center for Advancing Electronics Dresden (cfaed) and Faculty of Electrical and Computer Engineering, Technische Universitat Dresden, 01062, Dresden, Germany. Faculty of Chemistry and Pharmacy, University of Sofia, 1164, Sofia, Bulgaria. Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology, Leipzig Research Branch, 04316, Leipzig, Germany" |
| ISSN/ISBN: | 1521-3773 (Electronic) 1433-7851 (Print) 1433-7851 (Linking) |
| 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 Ni(2) [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 Ni(2) [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" |
| Keywords: | 2D conjugated MOFs chemiresistive sensors polarity selectivity surface modification volatile organic compounds; |
| Notes: | "PubMed-not-MEDLINEWang, Mingchao Zhang, Zhe Zhong, Haixia Huang, Xing Li, Wei Hambsch, Mike Zhang, Panpan Wang, Zhiyong St Petkov, Petko Heine, Thomas Mannsfeld, Stefan C B Feng, Xinliang Dong, Renhao eng 852909/ERC Starting Grant (FC2DMOF)/ 819698/ERC Consolidator Grant (T2DCP)/ Coordination Networks: Building Blocks for Functional Systems (SPP 1928, COORNETs)/ 881603/EU Graphene Flagship (GrapheneCore3)/ 417590517/DFG project (CRC 1415)/ 813036/H2020-MSCA-ITN (ULTIMATE)/ 899205/H2020-FETOPEN (PROGENY)/ the German Science Council, Center for Advancing Electronics Dresden (EXC1056)/ Germany 2021/05/26 Angew Chem Int Ed Engl. 2021 Aug 16; 60(34):18666-18672. doi: 10.1002/anie.202104461. Epub 2021 Jul 12" |
