Chem. J. Chinese Universities ›› 2020, Vol. 41 ›› Issue (12): 2781.doi: 10.7503/cjcu20200546

• Physical Chemistry • Previous Articles     Next Articles

Solvent Effect for Electron Transition of Alexa Fluor 350 with Linear Response and State-specific Methods

BI Tingjun1(), WANG Fan2, WANG Zhifan3   

  1. 1.College of Materials and Chemistry & Chemical Engineering,Chengdu University of Technology,Chengdu 610059,China
    2.Institute of Atomic and Molecular Physics,Sichuan University,Chengdu 610065,China
    3.School of Electronic Engineering,Chengdu Technological University,Chengdu 611730,China
  • Received:2020-08-09 Online:2020-12-10 Published:2020-12-09
  • Contact: BI Tingjun E-mail:tjbi_scu@foxmail.com

Abstract:

The linear response and two state-specific methods for calculating the difference in the excitation energy and spectral shift of Alexa Fluor 350(AF350) in solution were compared within the framework of pola-rizable continuum model(PCM). Compared with the experimental values, it is found that both the linear response and the two state-specific methods overestimate the excitation energy. Among them, the excitation energy obtained by IBSF method is the smallest and that by cGSRF method is the largest. As for the spectral shift value, the three methods are relatively small compared with the experimental value, and the LR method has the lar-gest calculated error, while the IBSF method is the most accurate method to predict the excitation energy and spectral shift of AF350. In addition, Marcus’s traditional theory was compared with the new non-equilibrium solvation theory based on constrained equilibrium, and it was found that the latter’s results are more consistent with the experimental values.

Key words: Linear response, State specific method, Polarizable continuum model, Excitation energy, Spectral shift value(Ed.: Y, K, S)

CLC Number: 

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