权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Establishment of rare earth collection and desorption / recovery technology using interfacial film of polyguanamine derivatives containing cyclic moiety

含环聚胍胺衍生物界面膜稀土收集与解吸/回收技术的建立

基本信息

批准号：
21K05180
负责人：
藤森厚裕
金额：
$ 2.75万
依托单位：
Saitama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
2021
资助国家：
日本
起止时间：
2021-04-01 至 2024-03-31
项目状态：
已结题

项目摘要

研究実施期間である2年である昨年度は，環状部位と，"剛直な"芳香族リンカー，または"柔軟な"脂肪族リンカー部位を持つポリグアナミン誘導体の単分子膜による，金属捕集能を気/水界面で実現した．先ず，Pd2+イオンの脱離挙動に関して，芳香族リンカー，または脂肪族リンカーを有する2種のポリグアナミン誘導体誘導体組織化膜に於いて，明確な差異を確認した．また，ポリグアナミン誘導体の組織化膜の形成から生じた環状部位は，平面配座ではなく，カップ状配座であることを明らかにした．捕集金属イオンをCd2+にした場合，前出のPd2+と同じ価数であるが故，下相水からの捕集挙動において，各種誘導体の界面単分子膜の間に有意差は無かった．一方で，Na+やNd3+に価数が変わると捕集特性に変化が確認された．脱離挙動に於いて確認された差異の原因は，リンカーユニットの置換による環状部位の傾斜角の変化と推定した．つまり環状部位の歪み角とイオン半径の組み合わせにより，捕集した金属カチオンが脱離しにくい構造が生じる場合があると推定された．更に，環状部分を含むポリグアナミン誘導体の界面膜が金属捕集に対して選択性を有することを実証した．加えて，捕集された金属種に依存する蛍光発光の選択性が確認された．ポリグアナミン誘導体の水面上単分子膜における金属捕集は，イオン半径と価数に応じて，下相水中に存在する金属カチオンに対して極端な選択性を示した．即ち，イオン半径が小さく価数の大きい金属カチオンが優先的に捕集される傾向にあることが確認された。これは，典型的な金属脱離挙動と一致しており，脱着がより困難な陽イオンが優先的に捕集された．更に，環状部位でのカップ状配座の傾斜角は、捕集選択性と相関していた．加えて，蛍光の発光と消光は，捕集した金属種に応じて大幅に変化した．

During the research period of 2 years, the cyclic sites,"rigid" aromatic compounds, and "soft" aliphatic compounds were found in molecular films, and the metal trapping energy and hydrogen/water interface were observed. First of all, Pd2 + ions are related to the dissociation of Pd2 + ions. Aromatic ions are related to aliphatic ions. There are two kinds of Pd2 + ions induced by Pd2 + ions. The formation of organized membrane of induced body in the form of ring, plane, shape and so on. In the case of trapping metal Cd2 +, the number of Pd2+ ions in the first phase is equal to that in the second phase. In the case of trapping metal Cd2 + ions in the second phase, the number of Pd 2 + ions in the third phase is equal to that in the fourth phase. In the case of trapping metal Cd2 + ions in the fourth phase, the number of Pd2+ ions in the fourth phase is equal to that in the fourth phase. In the case of trapping metal Cd2 + ions in the fourth phase, the number of Pd 2 + ions in the fourth phase is equal to that in the fourth phase. In the case of trapping metal Cd2 + ions in the fourth phase, the number of Pd 2 + ions in the fourth phase is equal to that in the fourth phase. In the case of trapping metal Cd2 + ions in the fourth phase, the number of Pd 2 + ions in the fourth phase is equal to that in the fourth phase. In the case of trapping metal Cd2 + ions in the fourth phase, the interface is equal to that in the fourth phase. On the other hand, Na+ and Nd3+ ions are recognized as the trapping characteristics. The reason for the difference in the separation movement is confirmed, and the inclination angle of the annular part is estimated. The angle and radius of the ring part are combined, and the metal is trapped. In addition, the ring portion contains a metal trap layer and a metal trap layer. In addition, the selectivity of light emission dependent on metal species was confirmed. The metal trapping effect of the molecular film on the surface of the polymer is shown by the radius and number of particles in the lower phase of the polymer. That is, the radius is small and the number is large. This is a typical case of metal detachment, which is difficult to achieve and preferential for capture. Moreover, the inclination angle of the annular part of the ring is opposite to the inclination angle of the annular part of the ring, and the selectivity of the ring is related to the inclination angle of the annular part. Add light and extinction, capture metal species, and greatly reduce the amount of light.