Journal of South China University of Technology (Natural Science Edition) ›› 2010, Vol. 38 ›› Issue (2): 12-16.doi: 10.3969/j.issn.1000-565X.2010.02.003

• Chemistry & Chemical Engineering • Previous Articles     Next Articles

Synthesis and Photoelectric Properties of N-Ethylcarbazole-Based Dendrimer

Zhu Zhi-Bo   

  1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2009-04-03 Revised:2009-07-01 Online:2010-02-25 Published:2010-02-25
  • Contact: 朱志博（1975-），男，博士生，主要从事有机光电材料的合成与理论计算研究． E-mail:zzb24@sina．com．cn
  • About author:朱志博（1975-），男，博士生，主要从事有机光电材料的合成与理论计算研究．
  • Supported by:

    国家自然科学基金资助项目（20671036）;广东省科技计划项目（2007A010500008,2008B010800030）

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Abstract:

In this paper, first, amorphous N-ethylcarbazole dendrimers were synthesized by means of both bromination （iodination） reaction and Ullmann coupling reaction. Then, the HOMO （ -5. 16eV） and LUMO （ - 1.59eV） energy levels of the product were obtained at a B3LYP/6-31G（d,p） level via the theoretical analysis based on the density functional theory. The calculated results accord well with the experimental ones. Moreover, the photophysical properties of the product were investigated. It was found that the compound had a maximum absorption at 292 nm and a maximum emission at 394 nm. Finally, the electrochemical properties of the compound were analyzed by means of cyclic vohammetry. The results show that reversible dual-oxidation peak with an onset oxidation potential of 0. 74V can be found in the N-ethylcarbazole dendrimers with a two-photon absorption cross section of 13.86×1050cm4·s·（photon） -1.

Key words: carbazole dendrimer, photo-physical property, electrochemical property, two-photon absorption