Accession Number : ADA293020

Title :   Novel Unsymmetrical Polydiacetylenes as Materials for Second and Third Order Nonlinear Optics.

Descriptive Note : Technical rept. 1 Oct 94-30 Sep 95,

Corporate Author : MASSACHUSETTS UNIV LOWELL DEPT OF CHEMISTRY

Personal Author(s) : Masse, C. E. ; Vande Wiede, K. ; Kim, W. H. ; Jiang, X. L. ; Kumar, J.

PDF Url : ADA293020

Report Date : 30 MAR 1995

Pagination or Media Count : 22

Abstract : The objective of this investigation was to develop stable nonlinear optical (NLO) materials which possess both second and third order NLO properties. These materials were envisioned as having a polydiacetylene (PDA) backbone with a second order active NLO chromophoric substituent. The choice of a PDA backbone in this investigation was twofold. In terms of third order NLO properties, the extensive p-conjugation of the PDA backbone leads to large ultrafast third order effects. In terms of second order NLO properties, the high thermal stability and rigidity of the PDA matrix in a "perfect" polymeric single crystal is expected to prevent the randomization of the NLO chromophores in the noncentrosymmetric environment. This paper focuses on the synthesis, structural analysis, and NLO properties of the unsymmetrical diacetylene monomers, ((9-Butoxy carbonyl) methyl urethanyl)- 1 -(4- urethanyl-4' nitrobiphenyl)-nona-2,4-diyne, and ((9-Butoxy carbonyl) methyl urethanyl)- 1 -(4-urethanyl-4' -nitrnazobenzene)-nona-2,4-diyne.

Descriptors :   *NONLINEAR OPTICS, *POLYMERIC FILMS, CHROMOPHORES, STRUCTURAL ANALYSIS, SYNTHESIS(CHEMISTRY), THERMAL STABILITY, ACETYLENES.

Subject Categories : Optics
      Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE