Accession Number : ADA317606

Title :   Living Catalysts for Cyclohexadiene Polymerization.

Descriptive Note : Final technical rept. 1 Jun 95-31 May 96,

Corporate Author : CALIFORNIA INST OF TECH PASADENA

Personal Author(s) : Grubbs, Robert H.

PDF Url : ADA317606

Report Date : 31 JUL 1996

Pagination or Media Count : 4

Abstract : ROMP polymerization has become an important method for the preparation of polyphenylenevinylenes and polynaphthylenevinylene. The new route allows the band gap and processing properties of the polymers to be varied by the use of side chains and functional groups. These materials are being used to fabricate electoluminescent devices with tunable colors. New techniques have been developed for the synthesis of the starting barrelenes and benzobarrelenes. The synthesis starts from the ICI diol system that was used in the preparation of polyparaphenylene. A key to these developments is the availability of well defined catalysts. Considerable effort has been devoted to the design and synthesis of new complexes that will catalyze the ROMP polymerization reaction and to develop new procedures which will control the molecular weight and livingness of those systems know. The students involved in this work have gained experience in polymer synthesis, catalyst development and the fabrication of devices.

Descriptors :   *POLYMERIZATION, *CATALYSTS, *CYCLIC COMPOUNDS, *VINYL RADICALS, *POLYPHENYLENES, *NAPHTHALENES, POLYMERS, ELECTROLUMINESCENCE, MOLECULAR WEIGHT, SYNTHESIS(CHEMISTRY), FABRICATION, COLORS, MONOMERS, GLYCOLS.

Subject Categories : Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE