Acta Phys. -Chim. Sin. ›› 2000, Vol. 16 ›› Issue (05): 422-425.doi: 10.3866/PKU.WHXB20000509

• ARTICLE • Previous Articles     Next Articles

Analysis of the Second-order Nonlinear Optical Properties of some Chalcones

Zhao Bo, Zhang Dao, Cao Yang, Chen Wen-Jian, Sun Zhen-Rong, Wang Zu-Geng   

  1. Department of Chemistry,Nanjing Normal University,Nanjing 210097;Department of Chemistry,Suzhou University,Suzhou 215006|Laboratory for Quantum Optics,East China Normal University,Shanghai 200062
  • Received:1999-09-07 Revised:1999-11-02 Published:2000-05-15
  • Contact: Zhao Bo E-mail:bozhao@pine.njnu.edu.cn

Abstract:

A series of chalcone derivatives, were synthesized and a systematic measurement was carried out on their second harmonic generation (SHG) and the cutoff wavelengths. Their second-order nonlinear optical polarizabilities β were also calculated by CNDO/SCI method. The properties of these compounds were analyzed and it was found that (1) substituted bromo group in chalcome molecule could improve greatly the microscopic and macroscopic nonlinear optical properties;(2) bromo group is favorable for high transparency and thermal stability of the optical materials. So it can be said that bromo group is an excellent candidate group for designing effective organic nonlinear optical materials. Furthermore, the nonlinear optical properties can also be affected by the crystal structure. The high quality single crystals of BMC were grown by method of solution growth.

Key words: Chalcone derivatives, Nonlinear optical polarizabilities, Transparency, Crystal structure