Interfacial self-assembly growth of mesoporous polydopamine nanofilms for formaldehyde sensing

作者：Chen, Bowen; Wei, Facai^*; Ma, Zhiheng; Peng, Yonghui; Guo, Haitao; Wang, Yuexi; Guan, Shaojian; Fu, Jianwei; Jing, Chengbin; Cheng, Jiangong; Xu, Jiaqiang^*; Liu, Shaohua^*

来源：JOURNAL OF POLYMER SCIENCE, 2023.

DOI：10.1002/pol.20220662

• formaldehyde sensing
• interfacial self-assembly
• mesoporous polymer
• polydopamine nanofilm
• QCM sensor

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.

• 单位
  上海大学; 郑州大学; 中国科学院