Functionalization of Supramolecular Polymers

超分子聚合物的官能化

基本信息

批准号：
14103015
负责人：
HARADA Akira
金额：
$ 73.38万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (S)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2006
项目状态：
已结题

项目摘要

1.Construction of Supramolecular PolymersWhen a guest part was covalently attached to cyclodextrin (CD), they formed supramolecular dimers, a cyclic daisy chain, supramolecular oligomers, and polymers. t-Boc-cinnamamide-α-CD was found to form chiral supramolecular polymers in aqueous solutions. Supramolecular poly[2]rotaxane polymers and supramolecular α-, β-CD copolymers were obtained.2.Dymanics of Supramolecular PolymersWe investigated a new one-pot method to prepare polyrotaxanes containing γ-CDs by the photocyclodimerization reactions of 9-anthryl groups at the ends of the polymer chain in the presence of γ-CDs.We have constructed pseudo-rotaxanes of α-CD with axle molecules bearing pyridyl end caps via kinetic control of threading of α-CD onto axle molecules. A single substituted pyridyl group attached to the ends of the axle molecule regulated the rate for α-CD passing them. Two methyl substituents could govern the degree of complex formation of a-CD with guest molecules and resu … More lted in the distinction of face direction of CD molecules entering the axle ends. α-CDs were arranged in one direction at two station units of the axle molecule.Poly(ethylene glycol) (PEG)-substituted CDs with different chain lengths have been synthesized. PEG-substituted CDs formed self-threading complexes in aqueous solutions, and the conformational exchange dynamics between self-threading and dethreading could be regulated by its chain length.3.Polymerization of lactonesCDs were found to initiate ring-opening polymerization of some cyclic esters selectively to give a polyester with a CD at the chain end.4.Gel-to-Sol and Sol-to-Gel TransitionsUsing molecular recognition of α-CD, we have successfully constructed a photoresponsive hydrogel system by combination of simple components, α-CD, dodecyl-modified poly(acrylic acid), and a photoresponsive competitive guest, 4,4'-azodibenzoic acid. Gel-to-sol and sol-to-gel transitions occurred repeatedly by repetitive irradiations of UV and visible light. Less

1。超分子聚合物的构造当客人部分共价附着在环糊精（CD）上时，它们形成了超分子二聚体，环状雏菊链，超分子寡聚物和聚合物。发现T-boc-Cinnamamide-α-CD在水溶液中形成手性超分子聚合物。 Supramolecular poly[2]rotaxane polymers and supramolecular α-, β-CD copolymers were obtained.2.Dymanics of Supramolecular PolymersWe investigated a new one-pot method to prepare polyrotaxanes containing γ-CDs by the photocyclodimerization reactions of 9-anthryl groups at the ends of the polymer chain in the presence of γ-CDs.We have constructed α-CD的伪rotaxanes用轴轴轴的轴分子通过动力学控制α-CD在轴分子上的动力学控制。连接到轴分子末端的单个取代的吡啶基组调节了通过它们的α-CD速率。两个甲基亚识别可以控制A-CD与宾客分子的复杂形成程度，并在进入轴末端的CD分子的面部方向上更倾斜。 α-CD在轴分子的两个站单元中以一个方向排列。Poly（乙二醇）（PEG）取代的CD具有不同的链长度。在水溶液中形成的自我读取复合物以及自我读取和剥落之间的构象交换动力学可以通过其链长度调节。在α-CD中，我们通过简单的组件，α-CD，十二烷基修饰的聚（丙烯酸）和一个光反应竞争的来宾（4,4'-氮杂型苯甲酸酸）的组合成功构建了光反应水凝胶系统。凝胶到溶质和溶胶 - 凝胶过渡反复通过对紫外线和可见光的重复辐射。较少的

项目成果

期刊论文数量（185）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Polymerizations of cyclic esters catalyzed by titanium complexes having chalcogen-bridged chelating diaryloxo ligands

DOI：
10.1021/ma0204711
发表时间：
2002-08
期刊：
Macromolecules
影响因子：
5.5
作者：
Y. Takashima;Y. Nakayama;Kouji Watanabe;Tetsuya Itono;N. Ueyama;A. Nakamura;and Hajime Yasuda;A. Harada;J. Okuda
通讯作者：
Y. Takashima;Y. Nakayama;Kouji Watanabe;Tetsuya Itono;N. Ueyama;A. Nakamura;and Hajime Yasuda;A. Harada;J. Okuda

Contraction of Supramolecular Double-Threaded Dimer Formed by α-Cyclodextrin with a Long Alkyl Chain

长烷基链α-环糊精形成的超分子双线二聚体的收缩