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General Chemistry ›› 2023, Vol. 9 ›› Issue (1-2): 230003-230003.DOI: 10.21127/yaoyigc20230003

• Report • Previous Articles    

Synthesis, DMF Sensing and Proton Conduction of a Two-Dimensional Metal-Organic Framework

Datang Chen, Weiming Liao*, Jun He   

  1. School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
  • Received:2023-04-27 Accepted:2023-05-12 Online:2023-06-30 Published:2023-06-21
  • Contact: Email: wmliao@gdut.edu.cn (W. L.)

Abstract: A two-dimensional layered metal-organic framework, [Eu(C26H15NO4)Cl]n (EuCDDB), was synthesized by the reaction of EuCl3·6H2O and 4,4'-(9H-carbazole-3,6-diyl)dibenzoic acid (H2CDDB) through one-pot solvothermal process, and characterized by several technologies of single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis, and Fourier transform infrared spectrum. The crystal structure reveals that hydrogen bonding interaction happens between NH groups and coordinated chloride ions from the adjacent coordination layers, meanwhile, well-opened one-dimensional channel allows the accommodation of water molecules. These characteristics endow EuCDDB with a considerable proton conductivity of 3.70 × 10-6 S cm-1 under 90 °C and relative humidity of 90%. In addition, EuCDDB also exhibits turn-on luminescent sensing on DMF molecules by enhanced Eu3+ red emission resulting from efficient ligand-to-metal energy transfer process.

Key words: metal-organic frameworks, hydrogen bonding, proton conduction, DMF sensing

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