Study on Coil-Globule Transition of Polymer Measured by Luminescent Probe Method

发光探针法测量聚合物线圈-球体转变的研究

• 批准号: 60470102
• 负责人: SAKANOUE Shinji
• 金额: $ 4.74万
• 依托单位: Tokyo University of Agriculture and Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1985
• 资助国家: 日本
• 起止时间: 1985 至 1986
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-60470102/
• 关键词: coil; globule; overlap concentration; transition; fluorescence depolarization; added polymer; volume fraction; ポリオキシエチレン

(1) Theoritical Study on Coil-Globule Transition of Polymer(A) The inner collapsed processes of the coil-globule transition of polymer are classified as five type with the physical and chemical forces. (a)van der Waals force (b)saturating chemical bonds (c)affinity between segment and solvent (d)Coulomb force (e)topological interaction(B) It is found out theoritically that the polymer-induced coil-globule transition begin before the overlap concentration of added polymer.(C) The characteristics of density distribution in globule polymer at various temperatures are theoritical clarified by a computer simulation.(2) Synthesis of Polymer labeled chromophores(3) POE-Induced Coil-Globule Transition of Polystyrene(A) The dependence of volume fraction of POE on the apparent mean rotational relaxation time of anthryl groups attached polymer is measured. It is clear that the apparent mean rotational relaxation time of the anthryl group sharply increases at 55-60%POE.(B) The dependence of volume fraction of POE on the rate of self-quenching is measured. The coil-globule transition of polystyrene is caused at 50%POE.

(1)聚合物卷-球转变的理论研究(A)聚合物卷-球转变的内部坍塌过程根据物理和化学作用力可分为五种类型。(a)范德华力(b)饱和化学键(c)段与溶剂之间的亲合力(d)库仑力(e)拓扑相互作用(b)理论上发现聚合物诱导的线圈-球过渡在加入聚合物的重叠浓度之前就开始了。(C)通过计算机模拟从理论上阐明了不同温度下球状聚合物的密度分布特征。(2)聚合物标记发色团的合成(3)POE诱导聚苯乙烯的卷球跃迁(A)测定了POE的体积分数与附着在聚合物上的蒽基的表观平均旋转弛豫时间的关系。可见，在55 ~ 60% poe时，蒽基的表观平均旋转弛豫时间急剧增加。(B)测量了POE的体积分数对自猝灭速率的依赖关系。在50%POE时，聚苯乙烯会发生卷球转变。

项目成果

H.Ushiki, F.Tanaka, I.Mita: "Study on the Fluorescence Depolarization of a Chromophore Attached to Polymer Chain End. Aggregation Behaviours of Poly ( <gamma> -benzyl L-glutamate) in Semi-Concentrated Solution up to Liquid Crystal Region" Eur. Polym. J.22

H.Ushiki、F.Tanaka、I.Mita：“关于附着在聚合物链末端的发色团的荧光去极化的研究。聚（<γ>-L-谷氨酸苄酯）在半浓缩溶液中至液晶的聚集行为

F.Tanaka: "Theory of the Second Virial Coefficients in Polymeric Solutions below the Theta Temperature" J. Chem. Phys.82. 4707-4714 (1985)

F.Tanaka：“Theta 温度以下聚合物溶液中的第二维里系数理论”J. Chem。

H.Ushiki;F.Tanaka: Eur.Polym.J.21. 701-705 (1985)

H.Ushiki；F.Tanaka：Eur.Polym.J.21。

H.Ushiki;F.Tanaka;I.Mita: Eur.Polym.J.22. 827-829 (1986)

H.Ushiki；F.Tanaka；I.Mita：Eur.Polym.J.22。

F.Tanaka, H.Ushiki: "Internal Condensation of a Polymer Molecule Induced by Saturating Bonds" J. Chem. Phys.84. 5925-5930 (1986)

F.Tanaka、H.Ushiki：“饱和键诱导的聚合物分子的内部缩合”J. Chem。