4.8 Article

Piezofluorochromic Metal-Organic Framework: A Microscissor Lift

Journal

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 137, Issue 32, Pages 10064-10067

Publisher

AMER CHEMICAL SOC
DOI: 10.1021/jacs.5b04695

Keywords

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Funding

  1. Center for Gas Separations Relevant to Clean Energy Technologies, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001015]
  2. Swedish Research Council (VR)
  3. Swedish Governmental Agency for Innovation Systems (VINNOVA)
  4. Rontgen-Angstrom Cluster
  5. Knut & Alice Wallenberg Foundation
  6. ARPA-e - U.S. Department of Energy [DE-AR0000249]
  7. Welch Foundation [A-1725]
  8. U.S. DOE [DE-AC02-06CH11357]

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We have successfully constructed a metal-organic framework, denoted as PCN-128W, starting from chromophoric linker and zirconium salt. PCN-128W exhibits interesting piezofluorochromic behavior, the color reversibly changes from white to yellow and so does the emission maximum from 470 to 538 nm. The stepwise fluorescence change was monitored by fluorospectroscopy which demonstrated gradual shift of the emission maximum when sequential compression was exerted. In order to gain deep insights into the piezofluorochromic mechanism, both the white and yellow phases are structurally characterized.

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