Details

Autor(en) / Beteiligte

• Xue, Wen-Long
• Li, Guo-Qiang
• Chen, Hui
• Han, Yu-Chen
• Feng, Li
• Wang, Lu
• Gu, Xiao-Ling
• Hu, Si-Yuan
• Deng, Yu-Heng
• Tan, Lei
• Dove, Martin T.
• Li, Wei
• Zhang, Jiangwei
• Dong, Hongliang
• Chen, Zhiqiang
• Deng, Wei-Hua
• Xu, Gang
• Wang, Guo
• Wan, Chong-Qing

Titel

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

Ist Teil von

• Nature communications, 2024-03, Vol.15 (1), p.2040-2040, Article 2040

Ort / Verlag

London: Nature Publishing Group UK

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. How to melt and quench the largest subclass of MOFs, metal carboxylate frameworks, into glasses is a major challenge. Here, the authors develop a strategy by grafting the zwitterions onto the carboxylate ligands and incorporating organic acids into the framework channels to realize the glass formation.