Acta Phys. -Chim. Sin. ›› 1995, Vol. 11 ›› Issue (07): 650-653.doi: 10.3866/PKU.WHXB19950717

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Second Harmonic Generation from Langmuir-Blodgett Multilayers of Hemicyanine Derivative Interleaved with a Novel Spacer

Ma Shi-Hong, Han Kui, Lu Xing-Ze, Wang Gong-Ming, Zheng Jia-Biao, Wang Wen-Cheng, Yao Zhong-Qi   

  1. State Key Joint Laboratory for Material Modification by Laser,Ion and Electron Beams(Fudan Branch),Laboratory of Laser Physics Optics,Fudan University,Shanghai 200433|Lanzhou Institute of Chemistry and Physics,Academia Sinica,Lanzhou 730000
  • Received:1994-05-28 Revised:1994-09-12 Published:1995-07-15
  • Contact: Ma Shi-Hong

Abstract:

A new type of bifat-chain amphiphilic molecules 1,10-bistearyl-4,6,13,15-tetraene-18-nitrogencrown-6 (NC), was synthesized and adopted as an spacer for an optically nonlinear hemicyanine derivative(DAEP) dye to form interleaved Y-type LB multilayer films. The second harmonic (SH) intensity increased quadratically with the bilayer number due to improvement of the structural properties by insertion of the long hydrophibic chain of the DAEP between two fat-chains of NC.

Key words: second harmonic generation, Langmuir-Blodgett multilayer films, Crown, Hemicyanine