吉林大学学报(理学版) ›› 2020, Vol. 58 ›› Issue (1): 151-157.

• 物理 • 上一篇    下一篇

限域BN纳米管中苯丙氨酸分子的手性转变机理

祝颖, 陈洪斌   

  1. 吉林医药学院 生物医学工程学院, 吉林 吉林 132013
  • 收稿日期:2018-10-26 出版日期:2020-01-26 发布日期:2020-01-12
  • 通讯作者: 陈洪斌 E-mail:15143215955@163.com

Chiral Transition Mechanism of Phenylalanine in BNNT

ZHU Ying, CHEN Hongbin   

  1. College of Biomedical Engineering, Jilin Medical University, Jilin 132013, Jilin Province, China
  • Received:2018-10-26 Online:2020-01-26 Published:2020-01-12
  • Contact: CHEN Hongbin E-mail:15143215955@163.com

摘要: 基于密度泛函理论中的B3LYP方法, 在6-31+G(d,p)基组水平上理论研究限域BN纳米管中苯丙氨酸(Phe)分子手性对映体的转变过程. 通过寻找反应过程中各过渡态和中间体的极值点基本结构, 绘制BN纳米管限域条件下Phe分子手性转变路径上各反应势能面. 结果表明: 在BN纳米管限域条件下, S-Phe@BNNT分子手性1C原子上的12H原子以羧基上的9O原子为桥梁, 转移至手性1C原子的另一侧, 实现了从S-Phe@BNNT到R-Phe@BNNT[KG*8]分子手性对映体的转变.

关键词: 手性转变, 苯丙氨酸分子, 过渡态, BN纳米管

Abstract: Using the B3LYP method of density functional theory, we investigated the chiral transition process of the phenylalanine (Phe) molecule in BNNT at the level of 6-31+G(d,p). We drew a complete reaction potential energy surface for chiral transition path of Phe molecule by finding structures of the extreme value points including the transition states and intermediates. The results show that the 12H atom on the chiral 1C atom of S-Phe@BNNT molecule transfers to the other side of the 1C atom via the 9O atom of carboxyl group as a bridge, and achieves the chiral enantiomer transition of Phe molecule from S-Phe@BNNT to R-Phe@BNNT.

Key words: chiral transition, phenylalanine molecule, transition state, BN nanotube

中图分类号: 

  • O561.4