中国物理B ›› 2010, Vol. 19 ›› Issue (11): 113201-113203.doi: 10.1088/1674-1056/19/11/113201

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Temporal electronic structure of non-resonant Raman excited virtual state of P-nitroaniline by 514 nm excitation via bond polarisabilities

吴国祯1, 王培杰2, 方炎2   

  1. (1)Molecular and Nano Sciences Laboratory, Department of Physics, Tsinghua University, Beijing 100084, China; (2)The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Capital Normal University, Beijing 100048, China
  • 收稿日期:2010-02-08 修回日期:2010-03-12 出版日期:2010-11-15 发布日期:2010-11-15
  • 基金资助:
    Project supported by the Natural Science Foundation of Beijing, China (Grant No. 2082006), the National Natural Science Foundation of China (Grant No. 20773073), the Key Grant Project of Chinese Ministry of Education (Grant No. 306020), and the Special Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20060003050).

Temporal electronic structure of non-resonant Raman excited virtual state of P-nitroaniline by 514 nm excitation via bond polarisabilities

Wang Pei-Jie(王培杰)a)†, Fang Yan(方炎) a), and Wu Guo-Zhen(吴国祯)b)   

  1. a The Beijing Key Laboratory for Nano-Photonics and Nano-Structure, Capital Normal University, Beijing 100048, China; b Molecular and Nano Sciences Laboratory, Department of Physics, Tsinghua University, Beijing 100084, China
  • Received:2010-02-08 Revised:2010-03-12 Online:2010-11-15 Published:2010-11-15
  • Supported by:
    Project supported by the Natural Science Foundation of Beijing, China (Grant No. 2082006), the National Natural Science Foundation of China (Grant No. 20773073), the Key Grant Project of Chinese Ministry of Education (Grant No. 306020), and the Special Research Fund for the Doctoral Program of Higher Education, China (Grant No. 20060003050).

摘要: We have studied the temporal bond polarisabilities of para-nitroaniline from the Raman intensities by the algorithm proposed by Wu et al. in 1987 (Tian B, Wu G, Liu G 1987 J. Chem. Phys. 87 7300). The bond polarisabilities provide much information concerning the electronic structure of the non-resonant Raman excited virtual state. At the initial moment by the 514.5 nm excitation, the tendency of the excited electrons (mapped out by the bond polarisabilities) is to spread to the molecular periphery, and the electronic structure of the Raman virtual state is close to the pseudo-quinonoidic state. When the final stage of relaxation is approached, the bond polarisabilities of those peripheral bonds relax faster than those closer to the molecular core, the phenyl ring. The molecule is in the benzenoidic form as demonstrated by the bond polarisabilities after relaxation.

Abstract: We have studied the temporal bond polarisabilities of para-nitroaniline from the Raman intensities by the algorithm proposed by Wu et al. in 1987 (Tian B, Wu G, Liu G 1987 J. Chem. Phys. 87 7300). The bond polarisabilities provide much information concerning the electronic structure of the non-resonant Raman excited virtual state. At the initial moment by the 514.5 nm excitation, the tendency of the excited electrons (mapped out by the bond polarisabilities) is to spread to the molecular periphery, and the electronic structure of the Raman virtual state is close to the pseudo-quinonoidic state. When the final stage of relaxation is approached, the bond polarisabilities of those peripheral bonds relax faster than those closer to the molecular core, the phenyl ring. The molecule is in the benzenoidic form as demonstrated by the bond polarisabilities after relaxation.

Key words: Raman excited virtual state, bond polarisabilities, relaxation

中图分类号:  (Polymers and organic compounds)

  • 71.20.Rv
78.30.Jw (Organic compounds, polymers)