Melt-quenched glass formation of a family of metal-carboxylate frameworks

Wen-Long Xue, Guo-Qiang Li, Hui Chen, Yu-Chen Han, Li Feng, Lu Wang, Xiao-Ling Gu, Si-Yuan Hu, Yu-Heng Deng, Lei Tan, Martin T. Dove, Wei Li (), Jiangwei Zhang (), Hongliang Dong, Zhiqiang Chen, Wei-Hua Deng, Gang Xu (), Guo Wang and Chong-Qing Wan ()
Additional contact information
Wen-Long Xue: Capital Normal University
Guo-Qiang Li: Capital Normal University
Hui Chen: Capital Normal University
Yu-Chen Han: Capital Normal University
Li Feng: Capital Normal University
Lu Wang: Capital Normal University
Xiao-Ling Gu: Capital Normal University
Si-Yuan Hu: Capital Normal University
Yu-Heng Deng: Capital Normal University
Lei Tan: Wuhan University of Technology
Martin T. Dove: Sichuan University
Wei Li: Nankai University
Jiangwei Zhang: Inner Mongolia University
Hongliang Dong: Center for High Pressure Science and Technology Advanced Research, Pudong
Zhiqiang Chen: Center for High Pressure Science and Technology Advanced Research, Pudong
Wei-Hua Deng: Chinese Academy of Sciences, Fuzhou
Gang Xu: Chinese Academy of Sciences, Fuzhou
Guo Wang: Capital Normal University
Chong-Qing Wan: Capital Normal University

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract Metal-organic framework (MOF) glasses are an emerging class of glasses which complement traditional inorganic, organic and metallic counterparts due to their hybrid nature. Although a few zeolitic imidazolate frameworks have been made into glasses, how to melt and quench the largest subclass of MOFs, metal carboxylate frameworks, into glasses remains challenging. Here, we develop a strategy by grafting the zwitterions on the carboxylate ligands and incorporating organic acids in the framework channels to enable the glass formation. The charge delocalization of zwitterion-acid subsystem and the densely filled channels facilitate the coordination bonding mismatch and thus reduce the melting temperature. Following melt-quenching realizes the glass formation of a family of carboxylate MOFs (UiO-67, UiO-68 and DUT-5), which are usually believed to be un-meltable. Our work opens up an avenue for melt-quenching porous molecular solids into glasses.

Date: 2024
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DOI: 10.1038/s41467-024-46311-x

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