Donor–Acceptor Conjugated Copolymers Containing Transition-Metal Complex: Intrachain Magnetic Exchange Interactions and Magneto-Optical Activity
Year: 2022
Type: article
Abstract: A donor–acceptor conjugated copolymer containing thienothiophene (donor) units and Co(II) complexes (acceptor) has been synthesized and characterized. The studies of magnetic properties of the polymers by SQUID and EPR measurements showed antiferromagnetic exchange interaction between neighboring spin centers along with the polymer backbone through intrachain interactions. It is the first time that the D–A conjugated polymer backbone serves as bridging ligands for magnetic couplings, making these type of polymers promising as magnetic materials. Moreover, the magneto-optical activity of polymer LCP1 was characterized using magnetic circular dichroism spectroscopy. It was found that the material exhibits a large magneto-optic rotation with a peak Verdet constant of 2980 deg·T –1 ·m –1 at 590 nm.
Source: Chemistry of Materials
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Funders: National Science Foundation, U.S. Department of Energy, Alfred P. Sloan Foundation, National Natural Science Foundation of China, Zhejiang Sci-Tech University, Division of Materials Research, Division of Chemistry, Basic Energy Sciences, Argonne National Laboratory, Natural Science Foundation of Zhejiang Province
Awards: G102163711, G103496778, G107546177, G1081866425, Ladder Oligomers and Polymers: Self-Assemblies and Opto-Electric Properties., G1925058530, G2031815614, G3075337988, G3529489257, G426311843, G5387317844, G5830727862, G6489869245, Modular Transition Metal Chalcogenide Coordination Polymers, G6848031779, G7583137537, G880751848, 刺激响应型有机铁磁性聚合物材料的设计、合成与磁性调控研究, Photoisomerization: New Complexes, Circular Dichroism, and the Faraday Effect
OpenAlex ID: W4283023745