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- W2059097258 abstract "A novel starlike C60(PMS)x(CH3)x (x = 1–3) copolymer was prepared by reaction of a living poly(α-methylstyrene) (PMS) carbanion with C60, followed by a capping reaction with methyl iodine. The characterization techniques used are UV-vis, FT-IR, GPC, DSC, TGA, ESR, 13C NMR, SEM, XRD, cyclic voltammetry (CV) and fluorescence spectroscopy. This starlike polymer has a visibly earthy yellow cast when compared with the unfunctionalized parent polymer (PMS), and is highly soluble in some common organic solvents. Poly(α-methylstyrene) is essentially transparent at wavelengths longer than 280 nm, and its main absorption band is at 250 (vs) nm. Covalent attachment of the multiple PMS arms to the C60 core results in the bathochromic shift of the above band and the appearance of a new absorption band at 328 nm (π→π*). This new band is one of the characteristic absorptions for organofullerenes. The thermal stability and oxidation/reduction activation of pure PMS are enhanced apparently by C60 chemical modifiction. It is also found that in this copolymer there are mainly two kinds of paramagnetic species, whereas no ESR signal in pure poly(α-methylstyrene) is detected, and this indicates the non-existence of unpaired electron or free radical. © 1997 Elsevier Science Ltd" @default.
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- W2059097258 date "1997-07-01" @default.
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- W2059097258 title "SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF A NOVEL AND STARLIKE C 60 (PMS) x (CH 3 ) x COPOLYMER" @default.
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- W2059097258 doi "https://doi.org/10.1016/s0014-3057(96)00296-0" @default.
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