Journal
RSC ADVANCES
Volume 4, Issue 105, Pages 60920-60928Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4ra07825j
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Funding
- National Natural Science Foundation of China [21204098, 51172070, 11275050, 51132009]
- Program for New Century Excellent Talents in University [NCET-10-0379]
- Shanghai Scientific and Technological Innovation Project [11nm0501100, 11ZR1445900]
- Shu Guang project [11SG30]
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So far, much work has been performed to modify graphene by physical or chemical methods, aiming to improve its solubility in solvents for its further application. Herein, we reported a new graphene/polymer nanocomposite, a graphene/poly(N-(2-hydroxypropyl) methacrylamide) (PHPMA) nanocomposite (G-PHPMA), by combining reversible addition-fragmentation chain transfer (RAFT) polymerization and click chemistry under mild conditions via the grafting-onto strategy. The as-prepared azido-terminated PHPMA homopolymer via RAFT polymerization was grafted onto yne-containing graphene through click chemistry at room temperature using CuBr/PMDETA as the catalytic system. FT-IR, XRD, Raman, element analysis, TGA, AFM, and TEM measurements were used to confirm the covalent linkage between PHPMA chains and graphene. The resulting G-PHPMA nanocomposite showed excellent dispersibility in organic solvents and aqueous media and it could quickly enter into SMMC-7721 and SH-SY5Y cells.
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