Accession Number:

ADA371478

Title:

Properties of Copolymer-Containing Blends: The Role of Molecular Architecture.

Descriptive Note:

Final rept. 15 Mar 96-14 Mar 99

Corporate Author:

MASSACHUSETTS UNIV AMHERST DEPT OF POLYMER SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1999-11-10

Pagination or Media Count:

39.0

Abstract:

Several investigations concerning the synthesis, structure and properties of polyphenylene vinylene PPV and related macromolecules with novel electro-optical characteristics have been completed. Selected homopolymers and copolymers of systematic ally varying architecture have been designed and synthesized and shown to be highly efficient chromophores in electroluminescent devices. Several of these polymers have also been shown to be efficient lasing materials in optically-pumped configurations. The study of the phase behavior of polymer blends has continued with emphasis on sequence distribution effects in the respective copolymer constituents. Dynamic light scattering studies of solvated flexible polymer chains have probed the coil-globule transition below the 0-point and related this to current theory. Other studies have investigated the properties of polyvinyl butyral blends, the detailed structure of doped polyphenylene vinylene and other conducting polymers, and the photophysics of stilbene derivatives.

Subject Categories:

  • Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE