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

基本信息

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

项目摘要

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。A部分是在选择性激光照射下溶解的碳纳米管溶液的光选择性分离的研究。金属和半导体单壁碳纳米管（m-SWNT&s-SWNT）手性选择性分离碳纳米管的研究已通过在手性结构的共振吸收带处的高功率 OPO（光学参量振荡器）脉冲激光激发下对洗涤剂中分散的单壁碳纳米管或溶液中的生物聚合物进行光选择性激发来追求。在激发波长 M_<11> 下用 NaDDBS（十二烷基苯磺酸钠盐）溶解的 SWCNT 溶液（507nm）、S_<22>（732nm）和S_<11>（977nm）随着脉冲数的增加，M_<11>的最高bnand能量完全降解了碳纳米管的结构。 S_<22>和S_<11>波段波长的激发仅损伤了s-SWCNT，但没有造成结构损伤这表明在 s-SWCNT 波长下对溶解的 SWCNT 溶液的激发可以在牺牲 s-SWCNT 的情况下得到浓缩的 m-SWNT，并且 AFM 测量表明在 s-SWCNT 处发生了热化。为了为光选择性手性激光分离提供更多的理想增溶剂，物理化学研究了半导体波长的激发。使用十二烷基硫酸钠（SDS）或羧甲基纤维素（CMC）等多种洗涤剂或生物聚合物对溶液中溶解的SWCNT进行了研究，发现CMC溶液中溶解的SWCNT的稳定性对溶液中的温度变化非常敏感。 SWCNT在CMC中的增溶溶液对于温度的上升或下降是不可逆的。 CMC溶液中溶解的SWCNT有望成为增强溶液中SWCNT光选择性手性分离的良好试剂，因为温度升高将使SDWCNT在激光激发波长处从溶液中分离出来。

项目成果

期刊论文数量（0）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

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

DOI：
发表时间：
2007
期刊：
影响因子：
0
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

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

DOI：
发表时间：
2009
期刊：
影响因子：
0
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

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

DOI：
发表时间：
2006
期刊：
影响因子：
0
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

Laser Fluence Effect on the Chirality Characteristics of Individually Dispersed Single-walled Carbon Nanotube in Aqueous Solution with Pulsed OPO Laser Irradiation

脉冲 OPO 激光照射下激光注量对水溶液中单独分散单壁碳纳米管手性特性的影响