Share Email Print
cover

Proceedings Paper

Theoretical evaluation of novel organic materials for electro-optic modulation
Author(s): John O. Morley
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Calculations are reported on the structure of donor-acceptor phenylazobenzenes, phenylazonaphthalenes, phenylazoanthracenes, and phenylazoheterocycles using the AM1 molecular orbital method. The spectra and hyperpolarizabilities of these systems have been calculated using a modified version of the sum-over-states CNDOVSB method specifically parameterized for electro-optic modulation. The replacement of one phenyl ring of the phenylazobenzenes by naphthalene or anthracene results in a modest increase in the hyperpolarizability but the value obtained is highly dependent on the position of the donor group and the tautomeric form. Enhanced values are obtained when a heterocyclic ring is incorporated into the azoarene with the largest value obtained for a donor-acceptor naphthylazothiophene. Substantial resonance enhancement effects occur for those derivatives which absorb in the red or infrared region of the spectrum.

Paper Details

Date Published: 25 February 1993
PDF: 11 pages
Proc. SPIE 1775, Nonlinear Optical Properties of Organic Materials V, (25 February 1993); doi: 10.1117/12.139189
Show Author Affiliations
John O. Morley, ICI Specialties (United Kingdom)


Published in SPIE Proceedings Vol. 1775:
Nonlinear Optical Properties of Organic Materials V
David J. Williams, Editor(s)

© SPIE. Terms of Use
Back to Top