Accession Number : ADA332766

Title :   Photofabrication of Surface Relief Gratings Using Post Functionalized Azo Polymers

Descriptive Note : Technical rept. 1 Hyb 97-30 Sep m98

Corporate Author : MASSACHUSETTS UNIV LOWELL DEPT OF CHEMISTRY

Personal Author(s) : Tripathy, S. K. ; Kumar, J. ; Kim, D. Y. ; Jiang, X. ; Wang, X.

PDF Url : ADA332766

Report Date : 11 DEC 1997

Pagination or Media Count : 12

Abstract : A series of azobenzene functionalized polymers has been synthesized by post polymerization azo coupling reaction. Photo-fabrication of surface relief gratings were studied on the polymer films. Epoxy based azo polymers were prepared by post azo coupling reaction to form polymers containing donor-acceptor type azo chromophores. The azo chromophores were designed to contain ionizable groups to impart self-assembling and photoprocessing capabilities to the polymers. The polymers containing 4-(4-(carboxylic acid)phenylazo)aniline chromophores can he directly photofabricated to form surface relief gratings with large surface modulations. Charge interactions had a strong influence on the details of the writing process. A new soluble polydiacetylene, post-functionalized with azobenzene groups was also prepared. Large amplitude surface grating could be fabricated on this polydiacetylene films as well.

Descriptors :   *POLYMERS, *AZOBENZENES, COUPLING(INTERACTION), INTERACTIONS, CHROMOPHORES, FILMS, FABRICATION, SURFACES, GRATINGS(SPECTRA), POLYMERIC FILMS, IONIZATION, ELECTRON DONORS, EPOXY COMPOUNDS, SOLUBILITY, ELECTRON ACCEPTORS, MODULATION, AMPLITUDE, ANILINES, ACETYLENES, DIAZO COMPOUNDS, PHOTOGRAPHIC PROCESSING.

Subject Categories : Organic Chemistry
      Polymer Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE