Solubilization of single-walled carbon nanotubes by entanglements between them and hyperbranched phenolic polymer
Solubilization of single-walled carbon nanotubes by entanglements between them and hyperbranched phenolic polymer
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DOI：
10.1016/j.carbon.2008.09.036
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发表时间：
2009
期刊：
影响因子：
10.9
通讯作者：
Tomoki Ogoshi;T. Saito;T. Yamagishi;Y. Nakamoto
中科院分区：
文献类型：
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作者：
Tomoki Ogoshi;T. Saito;T. Yamagishi;Y. Nakamoto
采用刘易斯酸催化双官能度酚类单体与三官能度酚类单体缩聚反应制备了超支化酚类聚合物（HBP）。通过选择合适的刘易斯酸，成功地合成了HBP。通过使用HBP在单壁碳纳米管（SWCNT）表面上的物理吸附，考察了SWCNT的增溶作用。单壁碳纳米管在N，N-二甲基甲酰胺（DMF）溶液中可溶于HBP的延伸分支，而它们不溶于线性酚醛聚合物。在四氢呋喃中存在收缩的HBP支链时，SWCNTs几乎不溶。HBP和SWCNT在DMF溶液中的延伸分支之间的缠结导致SWCNT的高溶解度。
Hyperbranched phenolic polymer (HBP) was prepared by Lewis acid-catalyzed polycondensation of bifunctional phenolic monomer with trifunctional phenolic monomer. By choosing an appropriate Lewis acid, HBP was successfully obtained. By using physical adsorption of HBP on a single-walled carbon nanotube (SWCNT) surface, solubilization of SWCNTs was examined. SWCNTs were soluble with extended branches of HBP in N,N-dimethylformamide (DMF) solution, while they were insoluble in a linear phenolic polymer. In the presence of shrinking branches of HBP in tetrahydrofuran, SWCNTs were hardly soluble. Entanglements between extended branches of HBP and SWCNT in DMF solution resulted in high solubility of SWCNTs.