Metal-organic framework thin films composed of free-standing acicular nanorods exhibiting reversible electrochromism

Chung Wei Kung, Timothy Chiaan Wang, Joseph E. Mondloch, David Fairen-Jimenez, Daniel M. Gardner, Wojciech Bury, Jordan Matthew Klingsporn, Jonathan C. Barnes, Richard Van Duyne, J. Fraser Stoddart, Michael R. Wasielewski, Omar K. Farha, Joseph T. Hupp

Research output: Contribution to journalArticlepeer-review

238 Citations (Scopus)

Abstract

A uniform and crack-free metal-organic framework (MOF) thin film composed of free-standing acicular nanorods was grown on a transparent conducting glass substrate. The MOF thin film exhibits electrochromic switching between yellow and deep blue by means of a one-electron redox reaction at its pyrene-based linkers. The rigid MOF stabilizes the radical cations of the pyrene linkers at positive applied potential, resulting in the reversible color change of the MOF film. The regular and uniform channels of the MOF allow ions to migrate through the entire film. The MOF thin film thus exhibits a remarkable color change and rapid switching rate.

Original languageEnglish
Pages (from-to)5012-5017
Number of pages6
JournalChemistry of Materials
Volume25
Issue number24
DOIs
Publication statusPublished - 2013 Dec 23

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering
  • Materials Chemistry

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