Synthesis, crystal structure, characterization, effective photocurrent response and photodegradation of a silver(I) diphosphine 3D supramolecular structure

• Published in: Journal of organometallic chemistry 2023-11, Vol.1001, p.122879, Article 122879
• Main Authors: Tan, Yi-Fan, Liang, Guang-Min, Zhou, Kun, Ji, Jiu-Yu, Zhao, Li-Ping
• Format: Article
• Language: English
• Subjects: Diphosphine ligand; Photocurrent response; Photodegradation; Silver(I); Supermolecule
• ISSN: 0022-328X; 1872-8561
• DOI: 10.1016/j.jorganchem.2023.122879

•Supramolecular 1 benefits from the bridging dppe and intermolecular weak interaction.•The band gap of 1 estimated to be 2.60 eV may be a potential semiconductor material.•1 has good photogenerated electron-hole-pair separation efficiency in FTO electrode.•Catalyst 1 degrades MB with the degradation efficiency of 82 % under xenon lamp. A new three-dimensional (3D) supramolecular compound, [Ag(dppe)(CF3COO)]n (1), was prepared by using Ag(I) as the silver source and dppe as the organic ligand through the self-assembly approach. The bridging dppe ligand makes compound 1 appear as a one-dimensional (1D) wavy chain consolidated by the intramolecular hydrogen bonds. Two adjacent 1D chains are expanded to a two-dimensional (2D) layer passing through the intermolecular CH···π interaction between the dppe ligands, and the 2D layers further weave into a 3D supramolecular structure via another intermolecular CH···π interactions between the dppe ligands. The precise structure of 1 was determined by single crystal X-ray diffractometer (SCXRD), and it was well-characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR) spectroscopy, powder X-ray diffraction (PXRD), thermogravimetric analysis (TG) and differential thermogravimetry analysis (DTG), and UV–vis diffuse reflectance spectrum. In addition, the photocurrent response, electrochemistry characteristic and photodegradation of 1 were investigated. The degradation efficiency (82 %) of 1 as catalyst to degrade methylene blue (MB) was significantly higher than that without catalyst.