Accession Number:

ADA244030

Title:

Theoretical Investigations and Attempted Synthesis of Organic Magnetic Polymers and Oligomers

Descriptive Note:

Final rept. 1 Jun 1987-31 Mar 1991

Corporate Author:

MASSACHUSETTS UNIV AMHERST DEPT OF CHEMISTRY

Personal Author(s):

Report Date:

1991-12-11

Pagination or Media Count:

6.0

Abstract:

A final summary is given concerning the present state of attempts to generate very high spin organic molecules and polymers which possess ferromagnetic bulk properties. Methodology has been developed to predict the types of structures most likely to have such properties, and significant progress has been made toward photochemical generation of polyradicals in the solid state. This project was aimed at designing magnetic properties in new materials, particularly organic polyradicals. We desired to use semiempirical molecular orbital plus configuration interaction computational methods to predict what types of structural features are most important in maximizing desirable ferromagnetic exchange interactions within organic systems intramolecular exchange. Once appropriate structural models were delineated by theory, we also aimed to develop a solid state photochemical method to generate phenoxyl radical sites in a polymeric material. Use of a solid-state polyradical synthesis method would allow masking techniques for production of magnetic sites on a surface, and would minimize the kinds of radical Quenching reactions that tend to reduce stability of radicals under free diffusion solution conditions.

Subject Categories:

  • Electrical and Electronic Equipment

Distribution Statement:

APPROVED FOR PUBLIC RELEASE