Abstract
The structure of melt-quenched zeolitic imidazole framework (ZIF) glasses can provide insights into their glass-formation mechanism. We directly detected short-range disorder in ZIF glasses using ultrahigh-field zinc-67 solid-state nuclear magnetic resonance spectroscopy. Two distinct Zn sites characteristic of the parent crystals transformed upon melting into a single tetrahedral site with a broad distribution of structural parameters. Moreover, the ligand chemistry in ZIFs appeared to have no controlling effect on the short-range disorder, although the former affected their phase-transition behavior. These findings reveal structure-property relations and could help design metal-organic framework glasses.
Original language | English |
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Journal | Science |
Volume | 367 |
Issue number | 6485 |
Pages (from-to) | 1473–1476 |
Number of pages | 4 |
ISSN | 0036-8075 |
DOIs | |
Publication status | Published - 27 Mar 2020 |