A new cuprous coordinating polymer constructed by bridging 2,2-(1,4-butanediyl)bis-1,3-benzoxazole ligand: synthesis, structure, and properties

Abstract

A new cuprous coordination polymer (CP) with 2,2-(1,4-butanediyl)bis-1,3-benzoxazole (BBO) and triphenylphosphine sulfide (SPPh₃) ligands, {[Cu(BBO)(SPPh₃)]ClO₄}_n (1), has been characterized by elemental analysis, UV-Vis, infrared spectra and single-crystal X-ray diffraction. The structural analysis revealed that 1 exhibits a one-dimensional CP and is in a three-coordinate slightly distorted trigonal planar environment in which the total angle around the copper(I) atom is 359.2°. Solid luminescence properties investigation showed that 1 had one emission peak at 428 nm (λ_ex = 355 nm, blue luminescence), which may be attributed to MLCT [(d¹⁰(Cu)→π*]. The cyclic voltammogram of 1 represents irreversible Cu²⁺/Cu⁺ pairs. The antioxidant activity experiment shows that 1 has the potential ability to scavenge hydroxyl and superoxide radical in vitro studies.

Keywords:

• Cuprous coordination polymer
• luminescence property
• crystal structure
• electrochemistry
• antioxidant activity

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

This project was supported by the Foundation of A Hundred Youth Talents Training Program of Lanzhou Jiaotong University (152022) and Natural Science Foundation of Gansu Province (17JR5RA090).