Accession Number:

ADA285044

Title:

Aryl Gels and Related Materials. Synthesis and Characterization of a New Class of Microporous Materials

Descriptive Note:

Annual rept. Jul 1992-Jul 1994

Corporate Author:

CALIFORNIA UNIV IRVINE

Personal Author(s):

Report Date:

1994-08-16

Pagination or Media Count:

17.0

Abstract:

The objective of this program is the synthesis and characterization of new families of optically responsive materials for use in optical device fabrication. The materials that have been developed are polysilsesquioxanes, hybrids of organic network polymers and inorganic oxides. The materials are prepared by sol-gel techniques employing molecular building blocks that contain a variable organic component and an inorganic oxide precursor. The resulting materials are molecular composites with no phase boundary between the organic and inorganic domains. Where the organic component of the molecular building block contains a chromophore with known NLO properties, optically responsive materials can be produced. In our efforts we have produced optical quality thin films by a combined sol-gelelectric field poling technique. The resulting poled thin films exhibit d sub 33 and r sub 33 figures of merit of 35-37 pmV and 9- 10 pmV. These values are comparable to that of lithium niobate. Work is continuing to enhance the d sub 33 and r sub 33 values as well as to improve the optical stability at elevated temperatures

Subject Categories:

  • Organic Chemistry
  • Polymer Chemistry
  • Laminates and Composite Materials
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE