Creation of self-assembled mesoscale chainmail and application

自组装中尺度链甲的制作及应用

• 批准号: 22K20526
• 负责人: DATTA SOUGATA
• 金额: $ 1.83万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Research Activity Start-up
• 财政年份: 2022
• 资助国家: 日本
• 起止时间: 2022-08-31 至 2024-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-22K20526/
• 关键词: nanostructures; topological structures; mechanical bonding; self-assembly; supramolecular chemistry; Supramolecular Polymer; 2D-Nanomaterial; Interlocked Assembly; Ring; Interfacial Synthesis

In the last fiscal year, we made our effort toward controlling of catenation of nanotoroids, which is crucial for the creation of mesoscale chainmail. The catenation relies on the size of the void of the nanotoroids and the secondary nucleation on their surface. We faced difficulty to control these factors using the proposed polar molecule. So, we worked on the barbituric acid-based nonpolar molecular design used in the preparation of polycatenanes in our laboratory. Since the corresponding nanotoroids are covered with alkyl chains of the barbiturate monomer, we increased the alkyl chain length of the molecule to prepare nanotoroids with a larger void space and with a higher frequency of secondary nucleation on their surface. Strikingly, atomic force microscopy and small-angle X-ray scattering experiments revealed a decrease in the inner void space of nanotoroids. Spectroscopic studies revealed increased efficiency of secondary nucleation on the surface of these nanotoroids. Interestingly, a combination of these two effects resulted in a higher yield of nano-[2]catenane and suppressed the formation of oligocatenanes. These preliminary results have been published in a paper recently.Stimulated by the aforementioned surprising observation, we plan to investigate the detailed mechanism of the size modulation of the nanotoroids and its effect on the catenation in the near future.

在上一个财政年度，我们努力控制纳米环的连锁，这对制造中尺度链甲至关重要。这种连接依赖于纳米环的空隙尺寸和其表面上的二次成核。我们面临的困难，以控制这些因素使用拟议的极性分子。因此，我们在实验室开展了基于巴比妥酸的非极性分子设计，用于制备聚索烃。由于相应的nanotoroids被覆盖的巴比妥酸盐单体的烷基链，我们增加了烷基链的长度的分子，以制备nanotoroids具有更大的空隙空间和更高的频率在其表面上的二次成核。引人注目的是，原子力显微镜和小角度X射线散射实验显示，纳米环的内部空隙空间减少。光谱研究表明，这些纳米环的表面上的二次成核的效率增加。有趣的是，这两种效应的组合导致纳米[2]索烃的产率更高，并抑制了低聚索烃的形成。这些初步结果已发表在最近的一篇论文中。受上述令人惊讶的观察的刺激，我们计划在不久的将来研究纳米环尺寸调制的详细机制及其对链合的影响。

项目成果

キラリティの導入による超分子ポリマー折りたたみ過程の解析

引入手性分析超分子聚合物折叠过程

• 发表时间: 2022
• 作者: 栃堀芽生;Datta Sougata;矢貝史樹
• 通讯作者: 矢貝史樹

湾曲性を発現する超分子ポリマーが示す超分子キラリティ

具有曲率的超分子聚合物表现出的超分子手性

• 发表时间: 2022
• 作者: 栃堀芽生;矢貝史樹
• 通讯作者: 矢貝史樹

異なるトポロジーを有するシードから誘起される超分子シード重合

不同拓扑种子诱导的超分子种子聚合

• 发表时间: 2023
• 作者: 板橋裕毅;田代啓悟;越川瞬平;Datta Sougata;矢貝史樹
• 通讯作者: 矢貝史樹

A Tale of Celebration of 2020 Olympics in Chemistry in Japan!

日本化学界庆祝 2020 年奥运会的故事！

• 发表时间: 2022
• 作者: Zhao Feng;Xuelong Liu;Kentaro Imaoka;Tomohiro Ishii;Ganbaatar Tumen‐Ulzii;Xun Tang;George F Harrington;Benoit Heinrich;Jean‐Charles Ribierre;Lise‐Marie Chamoreau;Lydia Sosa Vargas;David Kreher;Kenichi Goushi;Toshinori Matsushima;Guijiang Zho;Datta Sougata
• 通讯作者: Datta Sougata