Chem. J. Chinese Universities ›› 2015, Vol. 36 ›› Issue (11): 2204.doi: 10.7503/cjcu20150613

• Physical Chemistry • Previous Articles     Next Articles

Theoretical Investigation on Nonlinear Optical Properties of the Donor/Acceptor-decorated Zigzag Graphene Nanoribbons with the 5-9 Defect

ZHANG Xueying, YU Guangtao, CHEN Wei*(), HUANG Xuri*()   

  1. Institute of Theoretical Chemistry, Jilin University, Changchun 130023, China
  • Received:2015-08-03 Online:2015-11-10 Published:2015-10-10
  • Contact: CHEN Wei,HUANG Xuri E-mail:xychwei@gmail.com;huangxr@jlu.edu.cn
  • Supported by:
    † Supported by the National Basic Research Program of China(No.2012CB932800), the National Natural Science Foundation of China(Nos.21103065, 21373099, 21173097), the PhD Program Foundation of Ministry of Education, China(Nos.20110061120024, 20130061110020) and the Jilin Provincial Science and Technology Development Plan(No.20150101005JC)

Abstract:

In view of the inevitability of forming defect in the process of nanomaterial synthesis, we investigated the structures and nonlinear optical(NLO) properties of the donor/acceptor-decorated zigzag graphene nanoribbons with the 5-9 defect(zGNR-D5-9) by means of the density functional theory computations. It is revealed that these donor/acceptor-decorated zGNR-D5-9 exhibit considerable NLO response, and the modified site of functional group can significantly impact the β0 value. Particularly, simultaneously employing donor/acceptor pair to decorate both sides of zGNR-D5-9 can achieve much larger β0 value, where the synergistic effect of donor-π-acceptor framework and the 5-9 defect should be responsible for the large first hyperpolari-zability of systems. These interesting results can provide the valuable insights and more reliable information for the design of new NLO material based on the graphene nanoribbons.

Key words: Graphene nanoribbon, 5-9 Defect, Donor/acceptor group, Nonlinear optical property, The first hyperpolarizability

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