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Nat Commun. 2018 Nov 28;9(1):5042. doi: 10.1038/s41467-018-07532-z.

Metal-organic framework glasses with permanent accessible porosity.

Author information

1
Department of Materials Science and Metallurgy, University of Cambridge, Charles Babbage Road, Cambridge, CB3 0FS, UK.
2
Department of Chemistry and Bioscience, Aalborg University, DK-9220, Aalborg, Denmark.
3
Department of Inorganic Chemistry and Technology, National Institute of Chemistry, SI-1001, Ljubljana, Slovenia.
4
Department of Chemistry, University College London, Gordon Street, London, WC1H 0AJ, UK.
5
Diamond Light Source Ltd, Diamond House, Harwell Science and Innovation Campus, Didcot, OX11 0DE, UK.
6
State Key Laboratory of Silicate Materials for Architectures, Wuhan University of Technology, Wuhan, 430070, China.
7
Department of Natural and Mathematical Sciences, Faculty of Engineering, Ozyegin University, Istanbul, Turkey.
8
Future Industries, Commonwealth Scientific and Industrial Research Organisation, Clayton South, VIC, 3168, Australia.
9
MacDiarmid Institute for Advanced Materials and Nanotechnology, Institute of Fundamental Sciences, Massey University, Palmerston North, 4442, New Zealand.
10
School of Materials Science and Engineering, Qilu University of Technology, Jinan, 250353, China.
11
ISIS Facility, Rutherford Appleton Laboratory Harwell Campus, Didcot, Oxon, OX11 0QX, UK.
12
MacDiarmid Institute for Advanced Materials and Nanotechnology, Institute of Fundamental Sciences, Massey University, Palmerston North, 4442, New Zealand. S.Telfer@massey.ac.nz.
13
Department of Materials Science and Metallurgy, University of Cambridge, Charles Babbage Road, Cambridge, CB3 0FS, UK. tdb35@cam.ac.uk.

Abstract

To date, only several microporous, and even fewer nanoporous, glasses have been produced, always via post synthesis acid treatment of phase separated dense materials, e.g. Vycor glass. In contrast, high internal surface areas are readily achieved in crystalline materials, such as metal-organic frameworks (MOFs). It has recently been discovered that a new family of melt quenched glasses can be produced from MOFs, though they have thus far lacked the accessible and intrinsic porosity of their crystalline precursors. Here, we report the first glasses that are permanently and reversibly porous toward incoming gases, without post-synthetic treatment. We characterize the structure of these glasses using a range of experimental techniques, and demonstrate pores in the range of 4 - 8 Å. The discovery of MOF glasses with permanent accessible porosity reveals a new category of porous glass materials that are elevated beyond conventional inorganic and organic porous glasses by their diversity and tunability.

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