物理化学学报 >> 2001, Vol. 17 >> Issue (08): 743-746.doi: 10.3866/PKU.WHXB20010815

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Dendr.PE-PAA在水溶液中自聚集的NMR研究

毛诗珍;望天志;缪希茄;方晓文;袁汉珍;杜有如;朱麟勇;李妙贞;王尔鉴   

  1. 中国科学院武汉物理与数学研究所,波谱与原子分子物理国家重点实验室,武汉 430071;中国科学院物理化学技术研究所,北京 100101
  • 收稿日期:2000-12-19 修回日期:2001-01-22 发布日期:2001-08-15
  • 通讯作者: 毛诗珍 E-mail:maosz@wipm.whcnc.ac.cn

1H NMR Study of Self-assembly of Dendr.PE-PAA,an Amphiphilic Block Copolymer in Aqueous Solution

Mao Shi-Zhen;Wang Tian-Zhi;Miao Xi-Jia;Fang Xiao-Wen;Yuan Han-Zhen;Du You-Ru;Zhu Lin-Yong;Li Miao-Zhen;Wang Er-Jian   

  1. State Key Laboratory of Magnetic Resonance and Atomic and Moleculae Physics,Wuhan,Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071;Technical Institute of Physics and Chemistry,The Chinese Academy of Sciences,Beijing 100101
  • Received:2000-12-19 Revised:2001-01-22 Published:2001-08-15
  • Contact: Mao Shi-Zhen E-mail:maosz@wipm.whcnc.ac.cn

摘要: 用1H NMR自扩散系数,核弛豫和二维NOESY谱研究了新合成苄醚树枝体与丙烯酸杂化嵌段共聚物在水溶液中生成胶团的动态行为.体系中苄醚树枝体与丙烯酸杂化嵌段共聚物的各1H核的自旋-晶格弛豫时间(T1)、自旋-自旋弛豫时间(T2)、自扩散系数和二维NOESY中的交叉峰证明苄醚树枝体与丙烯酸杂化嵌段共聚物在水溶液中形成自聚集,且与不同浓度下聚集体有差别.

关键词: 自扩散系数, 核磁共振弛豫, 自聚体, 树枝体, 两亲嵌段共聚物

Abstract: The behavior of a novel amphiphilic block copolymer,Dendr.PE-PAA,in aqueous solution was studied by 1H NMR.The self-diffusion,spin-lattice relaxation time,spin-spin relaxation time and NOESY spectra were obtained.The results suggest that the amphiphilic block copolymer forms self-assembly in aqueous solution,and reveal that the shapes of self-assembly change with different concentration of the solution.

Key words: Self-diffusion coefficient, NMR relaxation, Self-aggregate, Dender.PE-PAA, Amphiphilie block copolymer