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Scandium carbide/cyanide alloyed cluster inside fullerene cage: synthesis and structural studies of Sc-3(mu(3)-C-2)(mu(3)-CN)@I-h-C-80
Wang, Taishan; Wu, Jingyi; Feng, Yongqiang
NOV 21 2014
Source PublicationDALTON TRANSACTIONS
Volume43Issue:43Pages:16270-16274
AbstractDensely grafted cylindrical polymer brushes with more than one side chains on each repeating unit of backbone were synthesized by copper-catalyzed azide-alkyne cycloaddition (CuAAC) reaction via grafting-onto method. The ketal-protected monomer, 2, 2-bis-(hydroxymethyl) propyl methacrylate (bis-MPMA) was prepared and polymerized by reversible addition-fragmentation chain transfer (RAFT) mediated radical polymerization to yield linear polymer backbone with narrow distribution of molecular weight. The polymer backbone with two hydroxyl groups at each repeating unit was obtained after deprotection under acid condition. Then the hydroxyl groups were converted to alkyne groups by reacting with 4-pentynoic anhydride. Azido-terminated poly (ethylene oxide) (PEO) or polystyrene (PS), which were obtained by post-polymerization modification,were coupled with the alkyne groups on the backbone by CuAAC reaction. The grafting ratio and structure of the obtained polymer brushes were characterized by size exclusion chromatography (SEC) and nuclear magnetic resonance (NMR). The reaction efficiency of PEO113-N-3 and PS18-N-3 in CuAAC was 85.1% and 78.0%, and the grafting ratios were 64.7% and 54.6%, respectively. The denseness of the alkyne groups on the polymer backbone or the steric hindrance of the polymer side chains may be holdback of the grafting.
Indexed BySCI
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/38628
Collection其它
Recommended Citation
GB/T 7714
Wang, Taishan,Wu, Jingyi,Feng, Yongqiang. Scandium carbide/cyanide alloyed cluster inside fullerene cage: synthesis and structural studies of Sc-3(mu(3)-C-2)(mu(3)-CN)@I-h-C-80[J]. DALTON TRANSACTIONS,NOV ,43(43):16270-16274.
APA Wang, Taishan,Wu, Jingyi,&Feng, Yongqiang.(NOV ).Scandium carbide/cyanide alloyed cluster inside fullerene cage: synthesis and structural studies of Sc-3(mu(3)-C-2)(mu(3)-CN)@I-h-C-80.DALTON TRANSACTIONS,43(43),16270-16274.
MLA Wang, Taishan,et al."Scandium carbide/cyanide alloyed cluster inside fullerene cage: synthesis and structural studies of Sc-3(mu(3)-C-2)(mu(3)-CN)@I-h-C-80".DALTON TRANSACTIONS 43.43(NOV ):16270-16274.
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