Density gradient ultracentrifugation of nanotubes: interplay of bundling and surfactants encapsulation
文献类型：期刊论文
| 作者 | Bonaccorso, F.1; Hasan, T.1; Tan, P. H.1,2; Sciascia, C.1; Privitera, G.1; Di Marco, G.3; Gucciardi, P. G.3; Ferrari, A. C.1 |
| 刊名 | Journal of physical chemistry c
 |
| 出版日期 | 2010-10-21 |
| 卷号 | 114期号:41页码:17267-17285 |
| ISSN号 | 1932-7447 |
| DOI | 10.1021/jp1030174 |
| 通讯作者 | Ferrari, a. c.(acf26@eng.cam.ac.uk) |
| 英文摘要 | Density gradient ultracentrifugation (dgu) has emerged as a promising tool to prepare chirality enriched nanotube samples. here, we assess the performance of different surfactants for dgu. bile salts (e.g., sodium cholate (sc), sodium deoxycholate (sdc), and sodium taurodeoxycholate (tdc)) are more effective in individualizing single wall carbon nanotubes (swnts) compared to linear chain surfactants (e.g., sodium dodecylbenzene sulfonate (sdbs) and sodium dodecylsulfate (sds)) and better suited for dgu. using sc, a narrower diameter distribution (0.69-0.81 nm) is achieved through a single dgu step on comocat tubes, when compared to sdc and tdc (0.69-0.89 nm). no selectivity is obtained using sdbs. due to its ineffectiveness in debundling. we assign the reduce selectivity of dihydroxy bile salts (s dc and tdc) in comparison with trihydroxy sc to the formation of secondary micelles. this is determined by the number and position of hydroxyl ( oh) groups on the a-side of the steroid backbone. we also enrich comocat swnt in the 0.84-0.92 nm range using the pluronic f98 triblock copolymer. mixtures of bile salts (sc) and linear chain surfactants (sos) are used to enrich metallic and semiconducting laser-ablation grown swnts. we demonstrate enrichment of a single chirality, (6,5), combining diameter and metallic versus semiconductillg separation on comocat samples. |
| WOS关键词 | WALLED CARBON NANOTUBES ; SODIUM DODECYL-SULFATE ; BILE-SALT MICELLES ; EXCITON ENERGY-TRANSFER ; CO-MO CATALYSTS ; RAMAN-SPECTROSCOPY ; OPTICAL-PROPERTIES ; ABSORPTION-SPECTROSCOPY ; SEDIMENTATION ANALYSIS ; ULTRAFAST PHOTONICS |
| WOS研究方向 | Chemistry ; Science & Technology - Other Topics ; Materials Science |
| WOS类目 | Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary |
| 语种 | 英语 |
| WOS记录号 | WOS:000282855400004 |
| 出版者 | AMER CHEMICAL SOC |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2427925 |
| 专题 | 半导体研究所 |
| 通讯作者 | Ferrari, A. C. |
| 作者单位 | 1.Univ Cambridge, Dept Engn, Cambridge CB3 0FA, England 2.Inst Semicond, Stale Key Lab Superlatt & Microstruct, Beijing 100083, Peoples R China 3.CNR, Ist Per & Proc Chim Fis, I-98158 Messina, Italy |
| 推荐引用方式 GB/T 7714 | Bonaccorso, F.,Hasan, T.,Tan, P. H.,et al. Density gradient ultracentrifugation of nanotubes: interplay of bundling and surfactants encapsulation[J]. Journal of physical chemistry c,2010,114(41):17267-17285. |
| APA | Bonaccorso, F..,Hasan, T..,Tan, P. H..,Sciascia, C..,Privitera, G..,...&Ferrari, A. C..(2010).Density gradient ultracentrifugation of nanotubes: interplay of bundling and surfactants encapsulation.Journal of physical chemistry c,114(41),17267-17285. |
| MLA | Bonaccorso, F.,et al."Density gradient ultracentrifugation of nanotubes: interplay of bundling and surfactants encapsulation".Journal of physical chemistry c 114.41(2010):17267-17285. |
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