Interfacial self-assembly growth of mesoporous polydopamine nanofilms for formaldehyde sensing |
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| Authors: | Bowen Chen Facai Wei Zhiheng Ma Yonghui Peng Haitao Guo Yuexi Wang Shaojian Guan Jianwei Fu Chengbin Jing Jiangong Cheng Jiaqiang Xu Shaohua Liu |
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| Institution: | 1. State Key Laboratory of Precision Spectroscopy, Engineering Research Center for Nanophotonics & Advanced Instrument, Ministry of Education, School of Physics and Electronic Science, East China Normal University, Shanghai, People's Republic of China;2. NEST Lab, Department of Chemistry, College of Science, Shanghai University, Shanghai, People's Republic of China;3. Chanhigh Holdings Limited (Ningbo), Cang Hai Industry Building, Ningbo City, Zhejiang Province, People's Republic of China;4. School of Materials Science and Engineering, Zhengzhou University, Zhengzhou, People's Republic of China;5. Department State Key Lab of Transducer Technology, Shanghai Institute of Microsystem and Information Technology, Chinese Academy of Sciences, Shanghai, People's Republic of China |
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| Abstract: | Mesoporous polymer nanofilms combine the advantages of the unique structure of mesopores, the quasi-2D configuration of the films, and the inherent properties of polymers, and have become a kind of ideal candidate for the high-performance micro-nano devices due to their highly accessible surface area and exposed active sites. However, the facile preparation of polymer nanofilms with well-defined mesostructures has remained a great challenge due to the lack of synthetic strategies. In this study, we developed a simple soft-template interfacial co-assembly strategy to in-situ construct mesoporous polydopamine nanofilms with uniform thickness (30 nm) and regularly distributed mesopore arrays (average pore size of 12 nm) on surfaces with different types and morphologies. Furthermore, a single-layer mesoporous polymer nanofilm was directly grown on a quartz crystal microbalance substrate and its performance for sensing formaldehyde was studied. The resulted sensor showed excellent sensing response, fast response/recovery dynamics, and great stability, presenting a great promising landscape for trace detection of formaldehyde gas. |
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| Keywords: | formaldehyde sensing interfacial self-assembly mesoporous polymer polydopamine nanofilm QCM sensor |
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