Nonlinear optical properties of conjugated oligomers: a simple model for length dependence and conformation

Author

Verbandt, Y. ; Thienpont, H. ; Veretennicoff, I. ; Geerlings, P. ; Rikken, G.L.J.A.

Author_Institution

Appl. Phys. Dept., Vrije Univ., Brussels, Belgium

fYear

1994

fDate

25-29 Jul 1994

Firstpage

102

Lastpage

104

Abstract

In conclusion, we have shown that resonant tunneling phenomena alone can account for the length dependence of the optical properties of conjugated systems. In addition, we have quantitatively studied the effect of a twist in the conjugated chain by using a very simple relationship between the spacing of the minima in the potential profile and the dihedral angle between the tilted p_x orbitals. The results on the biphenyl molecule are in good agreement with the experimental data. The very simple parametrisation of the model makes it a powerful tool for the estimation of the optimum length of newly designed conjugated molecules

Keywords

modelling; molecular configurations; nonlinear optics; optical materials; organic compounds; tunnelling; biphenyl molecule; conjugated chain; conjugated molecules; conjugated oligomers; conjugated systems; dihedral angle; length dependence; molecular conformation; nonlinear optical properties; optical properties; optimum length; potential profile; tilted p_x orbitals; Bonding; Electrons; Internet; Nonlinear optics; Optical films; Optical polarization; Optical saturation; Oscillators; Photonic band gap; Physics;

fLanguage

English

Publisher

ieee

Conference_Titel

Nonlinear Optics: Materials, Fundamentals, and Applications, 1994. NLO '94 IEEE

Conference_Location

Waikoloa, HI

Print_ISBN

0-7803-1473-5

Type

conf

DOI

10.1109/NLO.1994.470879

Filename

470879