吉首大学学报(自然科学版)

• 物理与电子 • 上一篇    下一篇

氟利昂F-22在外电场下的物理特性

管跃,秦玉霜,刘博涵   

  1. (1.江苏省大气海洋光电探测重点实验室,南京 210044;2.南京信息工程大学,南京 210044)
  • 出版日期:2018-03-25 发布日期:2018-04-28
  • 作者简介:管跃(1994—),男,江苏丹阳人,南京信息工程大学光学工程硕士研究生,主要从事光控高分子材料结构的计算模拟研究.
  • 基金资助:

    国家自然科学基金资助项目(11304157)

Physical Properties of Freon F-22 in External Electric Field

GUAN Yue,QIN Yushuang,LIU Bohan   

  1. ( 1.Jiangsu Key Laboratory for Optoelectronic Detection of Atmosphere and Ocean,Nanjing 210044,China;2.Nanjing  University of Information Science & Technology,Nanjing 210044,China)
  • Online:2018-03-25 Published:2018-04-28

摘要:

利用密度泛函理论,在LSDA/6-31G+(d,p)基组水平上,研究外电场作用下CHF2Cl分子的总能量、前线轨道、能隙、势能面和激发态等的变化情况.结果表明,y轴正向电场的增大引起分子的总能量减小、C—Cl键键长增大、电偶极矩增大、能隙减小、势能下降,电场大时分子更容易被激发,但电场增大后分子激发能减小;在外电场作用下,分子的紫外可见光谱发生红移.

关键词: CHF2Cl, 密度泛函理论, 外电场, 降解

Abstract:

Density Functional Theory  with LSDA/6-31+G(d,p) method is applied to study the total energy,frontier orbital,energy gap,potential energy and the excited state changes of the CHF2Cl molecules in the external electric field.The calculation results show that the total energy of the molecule will decreases,the bond length of  C—Cl decreases,the electric dipole moment increases,the energy gap decreases,the potential energy  decline with the increase of y axis positive electric field.It indicates that the molecule is more likely to be excited in a large electric field.And the excitation energy is a reflection,the excitation energy of molecular can be reduced with the increase of the electric field.With the increase of the external electric field,the UV-visible spectrum of molecules moves to redshift.

Key words: CHF2Cl, Density Functional Theory, external electric field, degradation

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