Molecular manipulator driven by spatial variation of molecular order

由分子有序空间变化驱动的分子操纵器

• 批准号: 21740312
• 负责人: SAMITSU Sadaki
• 金额: $ 2.91万
• 依托单位: National Institute for Materials Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2009
• 资助国家: 日本
• 起止时间: 2009 至 2010
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-21740312/
• 关键词: ソフトマター物理学; 液晶; アゾベンゼン; オーダーパラメータ; 分子マニピュレーション; マニピュレーター; 形状効果; ナノ秩序構造; 光異性化; 液晶・高分子複合系; パターン形成; ソフトマター; ナノ構造; 光ピンセット

Previous studies on liquid crystal systems containing impurities such as colloidal particles have focused on the collective long-range interactions among micron-scale impurities, resulting from elastic distortion of the liquid crystalline order. Here, we propose a novel mechanism in which the spatial variation of S generates a 'force' that transports nano-scale solutes mediated by the coupling between S and solute concentration. We have successfully designed a prototype of a molecular manipulator that transports a molecular solute along spatial variations of the scalar order parameter, modulated in a controlled manner by spot illumination of an azobenzene-doped nematic phase by UV light. The manipulator can control the spatial variation of the polymer concentration; therefore it shows promise for use in the design of novel hybrid soft materials.

以前的研究液晶系统中含有杂质，如胶体颗粒集中在微米级杂质之间的集体长程相互作用，导致弹性扭曲的液晶秩序。在这里，我们提出了一种新的机制，其中S的空间变化产生的“力”，传输纳米级溶质介导的S和溶质浓度之间的耦合。我们已经成功地设计了一个原型的分子操纵器，运输分子溶质沿着空间变化的标量序参数，调制在一个受控的方式由点照射的偶氮苯掺杂的双相紫外光。该操纵器可以控制聚合物浓度的空间变化，因此它显示出用于设计新型杂化软材料的希望。

项目成果

ホームページ等。

主页等

Self-Assembly and One-Dimensional Alignment of a Conducting Polymer Nanofiber in a Nematic Liquid Crystal

• DOI: 10.1021/ma900826h
• 发表时间: 2009-06
• 期刊: Macromolecules
• 影响因子: 5.5
• 作者: Sadaki Samitsu;Y. Takanishi;J. Yamamoto

Molecular manipulator driven by spatial variation of liquid-crystalline order

• DOI: 10.1038/nmat2853
• 发表时间: 2010-10-01
• 期刊: NATURE MATERIALS
• 影响因子: 41.2
• 作者: Samitsu, Sadaki;Takanishi, Yoichi;Yamamoto, Jun
• 通讯作者: Yamamoto, Jun