Accession Number : ADA299412

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

Descriptive Note : Final rept. Jul 92-Jul 95,

Corporate Author : CALIFORNIA UNIV IRVINE

Personal Author(s) : Shea, Kenneth J.

PDF Url : ADA299412

Report Date : 29 AUG 1995

Pagination or Media Count : 11

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-gel/electric field poling technique. The resulting poled thin films exhibit d33 and r33 figures of merit of 35-37 (pm/V) and 9-10 (pm/V). These values are comparable to that of lithium niobate. Work is continuing to enhance the d33 and r33 values as well as to improve the optical stability at elevated temperatures. p.1

Descriptors :   *ARYL RADICALS, *GELS, OPTICAL EQUIPMENT, OPTICAL PROPERTIES, STABILITY, TRANSITION METALS, NETWORKS, SYNTHESIS, MOLECULES, MATERIALS, POLYMERS, PRECURSORS, COMPOSITE MATERIALS, HIGH TEMPERATURE, THIN FILMS, FABRICATION, OPTICAL MATERIALS, ELECTRIC FIELDS, NONLINEAR OPTICS, VARIABLES, LITHIUM, BOUNDARIES, CLUSTERING, OXIDES, ORGANIC COMPOUNDS, QUANTUM ELECTRONICS, POROUS MATERIALS, INORGANIC MATERIALS, TRANSPARENCIES, NIOBATES.

Subject Categories : Inorganic Chemistry
      Organic Chemistry
      Laminates and Composite Materials
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE