Two novel lanthanide metal-organic frameworks based on tetraphenylethylene for ultra-high proton conduction

Qi Wu; Qianxi Li; Wenkang Zou; Zheyu Zhang; Yan Zhou; Qihua Zhao

doi:10.1039/d4cc06013j

Two novel lanthanide metal-organic frameworks based on tetraphenylethylene for ultra-high proton conduction

Chem Commun (Camb). 2025 Jan 6. doi: 10.1039/d4cc06013j. Online ahead of print.

Authors

Qi Wu¹, Qianxi Li¹, Wenkang Zou¹, Zheyu Zhang¹, Yan Zhou¹, Qihua Zhao^{1

2}

Affiliations

¹ School of Chemical Science and Technology, Yunnan University, Kunming 650500, P. R. China. [email protected].
² Key Laboratory of Medicinal Chemistry for Natural Resource Education Ministry, Yunnan University, Kunming 650091, P. R. China.

PMID: 39760482
DOI: 10.1039/d4cc06013j

Abstract

Two novel isostructural anionic lanthanide metal-organic frameworks, (Me₂NH₂)[Ln(HTCBPE-F)·(HCOO)·DMF]·4.5DMF·2H₂O (Eu-MOF and Dy-MOF), based on tetraphenylethylene carboxylate ligands were successfully constructed and characterized. These two MOFs possess porous structures and water stabilities with uncoordinated carboxylate groups and dimethyl ammonium cations, which allow for high proton conductivities (5.35 × 10^-2 and 1.22 × 10^-2 S cm^-1) at 98% RH (relative humidity) and 90 °C. Based on the structural characteristics and activation energy, the proton transfer mechanism is proposed.