HKUST-1 MOF in reline deep eutectic solvent: synthesis and phase transformation | Zendy

Renata A. Maia | Zendy; Benoît Louis | Zendy; Stéphane A. Baudron | Zendy

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HKUST-1 MOF in reline deep eutectic solvent: synthesis and phase transformation

Author(s) -

Renata A. Maia,

Benoît Louis,

Stéphane A. Baudron

Publication year - 2021

Publication title -

dalton transactions

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.98

H-Index - 184

eISSN - 1477-9234

pISSN - 1477-9226

DOI - 10.1039/d1dt00377a

Subject(s) - deep eutectic solvent , choline chloride , eutectic system , solvent , phase (matter) , chloride , materials science , chemical engineering , porosity , urea , transformation (genetics) , chemistry , composite material , organic chemistry , metallurgy , microstructure , biochemistry , engineering , gene

The fate of HKUST-1 (Cu 3 (BTC) 2 , BTC = 1,3,5-benzenetricarboxylate) in the green Deep Eutectic Solvent (DES) reline (choline chloride/urea 1 : 2) was investigated, highlighting that not only reline can be used to make this MOF but also to transform it into another crystalline material. The synthesis of HKUST-1(reline) showing good textural properties and a particular rose morphology was indeed successfully achieved in this solvent. However, upon optimizing the reaction conditions such as concentration and metal/ligand ratio, it was found that another structure Cu 2 (BTC)Cl also forms. It was unequivocally demonstrated that, upon heating in reline, HKUST-1 converts to the non-porous chloride-incorporating material. Hence, a novel feature of DES in MOF synthesis is uncovered: its role as a structure-directing agent, triggering the transformation between two different MOF structures.

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