Sequential Ligand Exchange of Coordination Polymers Hybridized with in Situ Grown and Aligned Au Nanowires for Rapid and Selective Gas Sensing

Pingping Li, Hongfeng Zhan, Suyang Tian, Jialiang Wang, Xiang Wang, Zhaohua Zhu, Jie Dai, Yihu Dai, Zhijuan Wang, Cong Zhang, Xiao Huang, Wei Huang

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

Combining polymeric materials and conductive one-dimensional metal nanostructures is able to achieve enhanced chemical and electrical properties, but the control over their morphology and spatial arrangement remains a big challenge. Herein, by replacing benzenedicarboxylate (BDC) in ZnBDC nanoplates with oleylamine (OAM) in the presence of HAuCl 4 , Zn-OAM nanobelts with a highly ordered laminar structure were obtained, on which ultrathin Au nanowires (Au NWs) were deposited and aligned along the long axes of the nanobelts. The resulting Zn-OAM/Au NW hybrid further underwent an OAM-to-2-methylimidazole ligand exchange, resulting in the formation of porous nanobelts composed of ZIF-8 nanocrystals interwound with aligned Au NWs. Due to the synergistic effect between the polymeric and metallic structures, the Zn-OAM/Au NW hybrid nanobelts and ZIF-8/Au NW porous nanobelts demonstrated fast and selective gas sensing at ambient conditions, in sharp contrast to the nonresponsive Au NWs or Zn-based polymers alone.

Original languageEnglish
Pages (from-to)13624-13631
Number of pages8
JournalACS Applied Materials and Interfaces
Volume11
Issue number14
DOIs
StatePublished - 10 Apr 2019

Keywords

  • aligned growth
  • chemiresistive sensor
  • coordination polymers
  • gas sensing
  • gold nanowires
  • ligand exchange
  • metal-organic frameworks

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