A new bismuth coordination polymer with proton conductivity and orange-red photoluminescence

• Published in: Journal of coordination chemistry 2021-04, Vol.74 (11), p.1810-1822
• Main Authors: Al-Nubi, Mesoun A. A., Hamisu, Aliyu M., Ariffin, Azhar, Zhang, Jinfeng, Shimizu, George K. H., Jo, Hongil, Ok, Kang Min, Wibowo, Arief C.
• Format: Article
• Language: English
• Subjects: Bismuth; Bismuth coordination polymer; Chemical synthesis; Coordination polymers; Crystal structure; Crystallography; Hydrogen bonding; Hydrogen bonds; Photoluminescence; proton conductivity; Protons; pyrazine-2,3-dicarboxylic acid; Single crystals; Thermal analysis; water stable; X ray powder diffraction
• ISSN: 0095-8972; 1029-0389
• DOI: 10.1080/00958972.2021.1921167

A new highly water stable bismuth-containing coordination polymer is reported along with its structural characterizations as determined by single crystal and powder X-ray diffraction, elemental, and thermal analysis, featuring an orange-red photoluminescence, and proton conductivity. The compound, (Imi) 2 [Bi 2 (pzdc) 4 ]·2H 2 O (1, pzdc 2- = pyrazine-2,3-dicarboxylate; Imi = imidazolium cation), crystallizes in the monoclinic space group, P2 1 /c (a = 14.3725(7) Å, b = 22.4499(10) Å, c = 11.5204(6) Å, and β = 91.1183(16)°), which contains 2D layers of Bi that are connected into a 3D supramolecular structure via extended hydrogen bond network. The interlayered voids are occupied by lattice water and imidazolium ions. Compound 1 is synthesized using an optimized, facile slow evaporation method leading to a water stable compound with a well-defined 1D hydrogen-bonded water feature along the crystallographic a-direction that lead to a proton conductivity of 8.41 × 10 −6 S·cm −1 at 85 °C and 95% RH.