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EPR study on star-shaped copolymers containing C60 core |
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| Authors: | S Chen Z Ping Y Chen R Cai Z Huang |
| Institution: | 1. Research Center of Analysis and Measurement, Fudan University, Shanghai, China 2. Department of Macromolecular Science, Fudan University, Shanghai, China 3. Department of Chemistry, Fudan University, Shanghai, China |
| Abstract: | A series of novel star-shaped copolymers containing C60 core C60(PPMS)X(CH3)X, C60(PMS)X(CH3)X, C60(PVK)XHX and C60(PAN)X(CH3)X] were prepared by reaction of C60 with the livingn-butyl-terminated vinyl polymer which was synthesized via anionic polymerization reaction of a vinyl compound in the presence ofn-butyllithium. The results of the electron paramagnetic resonance (EPR) experiment indicated that the spectroscopic properties of the copolymers are different from their parent polymers and pure C60. The star-shaped copolymers exhibited two kinds of paramagnetic species. The temperature dependence of the EPR spectra of the C60(PAN)X(CH3)X copolymer has also been investigated, and a pyrolytic mechanism of the formation of a new conjugated system for this copolymer is suggested. |
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