波谱学杂志 ›› 2008, Vol. 25 ›› Issue (4): 453-460.

• 研究论文 • 上一篇    下一篇

壳聚糖和N-羟基苯并三氮唑相互作用的NMR研究

代博娜;彭敏;陈群*   

  1. (上海市功能磁共振成像重点实验室,华东师范大学 物理系,上海 200062)
  • 收稿日期:2008-03-23 修回日期:2008-04-18 出版日期:2008-12-05 发布日期:2009-12-05
  • 通讯作者: 陈群

Interaction between Chitosan and 1-Hydroxybenzotriazole Studied by NMR Spectroscopy

DAI Bo-na;PENG Min;CHEN Qun*   

  1. (Shanghai Key Laboratory of Functional Magnetic Resonance Imaging, Department of Physics, East China Normal University, Shanghai 20062, China)
  • Received:2008-03-23 Revised:2008-04-18 Online:2008-12-05 Published:2009-12-05
  • Contact: CHEN Qun

摘要: 运用液体1H谱、固体高分辨13C谱以及脉冲梯度场测量自扩散系数等核磁共振技术,研究了壳聚糖(CS)和N-羟基苯并三氮唑(HOBt)的相互作用.结果表明,CS重复单元中2位碳上的-NH2和HOBt唑环上的-OH之间存在较强的氢键作用,HOBt的存在可以促进CS在水溶液中的溶解,使得在水溶液中对CS进行化学改性成为可能.通过测量CS与HOBt混合溶液中HOBt的自扩散系数,计算出复合物结合与解离的平衡常数K.

关键词: NMR, 壳聚糖, N-羟基苯并三氮唑, 氢键相互作用, 自扩散系数

Abstract: The interaction between chitosan (CS) and 1-hydroxybenzotriazole (HOBt) was characterized by 1H NMR spectroscopy, NMR diffusion measurement, and solid-state high-resolution 13C NMR spectroscopy. It was found that CS and HOBt can form organic complex in aqueous solution, with hydrogenbond interaction as the main binding force. The association constant of CS/HOBt complex was calculated from the self-diffusion coefficient of HOBt. The interaction between CS and HOBt can potentially be utilized for efficient chemical modification of CS.

Key words: NMR, chitosan, 1-hydroxybenzotriazole, hydrogen-bond interaction, self diffusion coefficient

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