Investigation on the Selective Separation of Chiral Carbon Nanotubes by Photoselective Laser Excitation at the Wave length of the Resonance Absorption Bands

共振吸收带波长光选择性激光激发选择性分离手性碳纳米管的研究

• 批准号: 18310080
• 负责人: ISHII Tadahiro
• 金额: $ 8.52万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18310080/
• 关键词: Chiral Carbon Nanotube; Photo resonance excitation; OPO pulsed Laser; Chiral Selective Separation; Surfactant (NaDDBS); Metallic and Semi conducting; Enrichment Metallic SWNT; Photo-Thermal Conversion; 単層カーボンナノチューブ; カイラル構造体; チップ型&ホーン型; カルボキシメチル

This report is consisted of two parts. Part A is the inevestigation of the photoselective separation of carbon nanotube in the solubilized solution at the selective laser irradiatio. . The part B is the physical chemistry of the solubilized SWCNT solution by using detergents and bioploymer. . The investigation of the chiral selective separations of carbon nanotubes of the metallic and the semiconducting single-walled carbon nanotubes (m-SWNT&s-SWNT) has been pursued by the photoselective excitaion of the dispersed SWNT in the detergent or the biopolymer in solution at the high power OPO (optical parametric oscillator) pulsed laser excitation at the resonance absorption band of chiral structures.When the laser excitation was made for the aqueous SWCNT solution solubilized with NaDDBS (Dodecylbenzenesulfonic acid sodium salt) at the excitation wave length of M_<11> (507nm), S_<22> (732nm), and S_<11> (977nm), respectively. The highest bnand energy of M_<11> degraded the structure of carb … More onnanotube completely as the pulse number increased. However, the excitations at the wave length of S_<22> and S_<11> bands damaged only s-SWCNT, but did not give the structural damage of m-carbonanotubes. It indicates that the ecitations for the soliubilized SWCNT solution at the wave lengths of s-SWCNTs could give the concentrated m-SWNT at the sacrifice of s-SWCNT. Raman spectroscopic and AFM measurements revealed that there is ocurred the thermalization at the excitation of the semiconducting wave length. In order to have more idial solubilizing agents for the photo-selective chiral laser separation, the physical chemistry of the solubilized SWCNT in solution was invetstigated by using many kinds of detergents or biopolymer such as sodiumdodecylsulphate (SDS) or carboxymethylcellulose (CMC). It is found that the stability of the solubilized SWCNT in CMC solution is very sensitive for the temperature changes in the solution. The solubilized solution of SWCNT in CMC is irreversible for the rising temperature or the falling temperature changes. It indicates that the solubilized SWCNT in CMC solution is expected as a good agent for the enhancement of the photoselective chiral separation of SWCNT in solution, because the temperture rise will give the separation of SDWCNT from the solution at the laser excitaion wave length Less

本报告由两部分组成。第一部分是在选择性激光照射下，溶解溶液中碳纳米管的光选择性分离的研究。.部分B是通过使用洗涤剂和生物聚合物溶解的SWCNT溶液的物理化学。.金属和半导体单壁碳纳米管的手性选择性分离研究（m-SWNT和s-SWNT）已经通过在高功率OPO下分散在洗涤剂中的SWNT或在溶液中的生物聚合物的光选择性激发来追求（光学参量振荡器）在手性结构的共振吸收带处进行脉冲激光激发。当对用NaDDBS增溶的SWCNT水溶液进行激光激发时，在M_<11>（507 nm）、S_<22>（732 nm）、S_<11>（977 nm）三个激发波长下，对十二烷基苯磺酸钠进行了测定。M_2的最高激发能<11>使碳水化合物的结构发生了降解 ...更多信息 随着脉冲数的增加，然而，在S_和S_波段的波长处的激发<22><11>仅损伤s-SWCNT，而没有对m-碳纳米管造成结构损伤。这表明在s-SWCNT的波长下对固溶的SWCNT溶液进行激发可以在牺牲s-SWCNT的情况下得到浓缩的m-SWNT。拉曼光谱和原子力显微镜的测量结果表明，在半导体波长的激发下发生了热化。为了获得更适合于光选择性手性激光分离的增溶剂，研究了不同类型的去污剂或生物高分子如十二烷基硫酸钠（SDS）、羧甲基纤维素（CMC）对单壁碳纳米管增溶后的物理化学性质的影响。结果表明，溶解的单壁碳纳米管在CMC溶液中的稳定性对溶液中的温度变化非常敏感。单壁碳纳米管在CMC中的增溶过程对温度的升高或降低都是不可逆的。这表明，在CMC溶液中增溶的单壁碳纳米管有望作为一种良好的试剂，用于增强溶液中单壁碳纳米管的光选择性手性分离，因为温度升高将使SDWCNT从溶液中在激光激发波长下分离。

项目成果

孤立分散SWNTのカイラリティー特性に及ぼすOPOパルスレーザー照射のフルェンス効果

OPO 脉冲激光照射对孤立分散 SWNT 手性特性的通量效应

• 发表时间: 2009
• 作者: N. Tanei;H. Ogi;N. Nakamura;M. Hirao;中村 暢伴;中村 暢伴;舎川 知広;荻 博次;Tadahiro Ishii;Tadahiro Ishii;石井忠浩;石井忠浩
• 通讯作者: 石井忠浩

Temperature Effects on the Optical Properties of SWNTs Dispersed in Aqueous Solutions

温度对分散在水溶液中的单壁碳纳米管光学性质的影响

• 发表时间: 2007
• 作者: Toru Ishii;Katsumi Uchida;Tadahiro Ishii and Hirofumi Yajima;石井忠浩;石井忠浩;石井忠浩;Tadahiro Ishii;Tadahiro Ishii;Tadahiro Ishii
• 通讯作者: Tadahiro Ishii

Ultrasonication Effects on Debundling and Cutting of Single-Walled Carbon Nanotubes dispersed in AqueousSolution

超声对分散在水溶液中的单壁碳纳米管的解束和切割的影响

• 发表时间: 2007
• 作者: Toru Ishii;Katsumi Uchida;Tadahiro Ishii and Hirofumi Yajima;石井忠浩;石井忠浩;石井忠浩;Tadahiro Ishii
• 通讯作者: Tadahiro Ishii

多形態カーボンナノチューブの生体高分子水溶液中による分散挙動およびその分光特性評価

多晶型碳纳米管在生物聚合物水溶液中的分散行为及其光谱性能评价

• 发表时间: 2007
• 作者: Isamu Tajima;Catalin Romeo Luclescu;Yoshie Suzuki;Katsumi Uchida;Tadahiro Ishii;and Hirofumi Yajima;石井忠浩;石井忠浩
• 通讯作者: 石井忠浩

Optical pH Response of Micelle-encapsulated and Polymer-wrapped Single-Wall Carbon Nanotubes

胶束封装和聚合物包裹的单壁碳纳米管的光学 pH 响应

• 发表时间: 2006
• 作者: Isamu Tajima;Catalin Romeo Luclescu;Yoshie Suzuki;Katsumi Uchida;Tadahiro Ishii;and Hirofumi Yajima;石井忠浩;石井忠浩;Tadahiro Ishii;Tadahiro Ishii;石井忠浩;石井忠浩;Tadahiro Ishii;石井忠浩;石井忠浩;石井忠浩;Tadahiro Ishii;Tadahiro Ishii
• 通讯作者: Tadahiro Ishii