Absorbate-induced piezochromism in a porous molecular crystal

Christopher H. Hendon, Kate E. Wittering, Teng Hao Chen, Watchareeya Kaveevivitchai, Ilya Popov, Keith T. Butler, Chick C. Wilson, Dyanne L. Cruickshank, Ognjen S. Miljanić, Aron Walsh

研究成果: Article同行評審

27 引文 斯高帕斯(Scopus)

摘要

Atmospherically stable porous frameworks and materials are interesting for heterogeneous solid-gas applications. One motivation is the direct and selective uptake of pollutant/hazardous gases, where the material produces a measurable response in the presence of the analyte. In this report, we present a combined experimental and theoretical rationalization for the piezochromic response of a robust and porous molecular crystal built from an extensively fluorinated trispyrazole. The electronic response of the material is directly determined by analyte uptake, which provokes a subtle lattice contraction and an observable bathochromic shift in the optical absorption onset. Selectivity for fluorinated absorbates is demonstrated, and toluene is also found to crystallize within the pore. Furthermore, we demonstrate the application of electronic structure calculations to predict a physicochemical response, providing the foundations for the design of electronically tunable porous solids with the chemical properties required for development of novel gas-uptake media.

原文English
頁(從 - 到)2149-2154
頁數6
期刊Nano letters
15
發行號3
DOIs
出版狀態Published - 2015 三月 11

All Science Journal Classification (ASJC) codes

  • 生物工程
  • 化學 (全部)
  • 材料科學(全部)
  • 凝聚態物理學
  • 機械工業

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