| pH-responsive poly（2-diethylaminoethyl methacrylate）-functionalized multiwalled carbon nanotubes |
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| 作者姓名： | LI Wenwen KONG Hao GAO Chao YAN Deyue |
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| 作者单位： | College of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| 摘 要： | Poly（2-diethylaminoethyl methacrylate） （PDEAEMA）-coated multiwalled carbon nanotubes （MWNT-PDEAEMA） were successfully prepared by MWNT-surface initiated atom transfer radical polymerization （ATRP）. The obtained MWNT-PDEAEMA nanocylinders have a core of MWNT and a shell of PDEAEMA and this core-shell structure was confirmed by TEM observations. The UV-Vis and AFM measurements showed that the MWNT-PDEAEMA exhibited obvious pH sensitivity. The solubility of PDEAEMA-coated MWNT dramatically decreased when pH increased to ca. 7.0. Because of the giant molecular weight of the molecular hybrids and local high density of polymeric grafts linked onto MWNTs, the resulting MWNT-PDEAEMA nanocomposites are easier to aggregate, or more sensitive to pH, as compared with the neat PDEAEMA.
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| 关 键 词： | 碳纳米管 MWNT-PDEAEMA 聚乙烯 PH灵敏度 可溶性 |
| 收稿时间： | 2005-03-05 |
| 修稿时间： | 2005-03-052005-04-18 |
pH-responsive poly(2-diethylaminoethyl methacrylate)-functionalized multiwalled carbon nanotubes |
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| LI Wenwen KONG Hao GAO Chao YAN Deyue.pH-responsive poly(2-diethylaminoethyl methacrylate)-functionalized multiwalled carbon nanotubes[J].Chinese Science Bulletin,2005,50(20):2276-2280. |
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| Authors: | Wenwen Li Hao Kong Chao Gao Deyue Yan |
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| Institution: | LI Wenwen, KONG Hao, GAO Chao & YAN Deyue College of Chemistry and Chemical Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | Poly(2-diethylaminoethyl methacrylate) (PDEAEMA)-coated multiwalled carbon nanotubes (MWNT- PDEAEMA) were successfully prepared by MWNT-surface initiated atom transfer radical polymerization (ATRP). The obtained MWNT-PDEAEMA nanocylinders have a core of MWNT and a shell of PDEAEMA and this core-shell struc- ture was confirmed by TEM observations. The UV-Vis and AFM measurements showed that the MWNT-PDEAEMA exhibited obvious pH sensitivity. The solubility of PDEAEMA-coated MWNT dramatically decreased when pH increased to ca. 7.0. Because of the giant molecular weight of the molecular hybrids and local high density of polymeric grafts linked onto MWNTs, the resulting MWNT-PDEAEMA nanocomposites are easier to aggregate, or more sensitive to pH, as compared with the neat PDEAEMA. |
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| Keywords: | carbon nanotubes multiwalled carbon nanotubes self-assembly surface initiating pH-sensitivity |
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