Design of conjugated microporous polymer nanotubes for efficient benzene molecular adsorptions

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Wen-Jie Fan
  • Yan-Ling Zhao
  • Yu-Cai Hu
  • Hua Shi
  • Da-Zhi Tan

Related Research Unit(s)

Detail(s)

Original languageEnglish
Article numbere25492
Journal / PublicationInternational Journal of Quantum Chemistry
Volume118
Issue number3
Online published25 Sept 2017
Publication statusPublished - 5 Feb 2018

Abstract

Single-walled conjugated microporous polymer (CMP) nanotubes containing alternative phenylene and ethynylene units were described computationally for the first time in this work. The electronic structures and adsorption properties were studied by the density-functional tight-binding method augmented with a van der Waals dispersion term. Our calculations show that the morphology of CMP influences the benzene-adsorption performance significantly. The tubes show smaller binding energies to benzene molecule than the film counterparts, consistent with the observation of low adsorption capacities of tubular materials in our experiments. Enlarging the linker or adding substituents in the node can both reduce the tube's band gap. The introduction of -OH or -NH2 substituents in the tube node increases the binding strength between the adsorbent and the adsorbate, which is energetically favorable to enhance the adsorption capacity. Our results are expected to provide theoretical insights into the rational design of novel CMP nanotubes with improved adsorption capacities for organics.

Research Area(s)

  • conjugated microporous polymer, density-functional calculations, nanotubes, structural modification

Citation Format(s)

Design of conjugated microporous polymer nanotubes for efficient benzene molecular adsorptions. / Fan, Wen-Jie; Zhao, Yan-Ling; Hu, Yu-Cai et al.
In: International Journal of Quantum Chemistry, Vol. 118, No. 3, e25492, 05.02.2018.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review