Accession Number : ADD016031

Title :   Accordion-Like Polymers for Nonlinear Applications.

Descriptive Note : Patent, Filed 20 Mar 92, patented 21 Sep 93,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Stenger-Smith, John D ; Henry, Ronald ; Hoover, James ; Lindsay, Geoffrey ; Fischer, John

Report Date : 21 Sep 1993

Pagination or Media Count : 18

Abstract : The present invention discloses new polymers which can assume an accordion-like conformation of the backbone. These polymers are prepared by the copolymerization of two difunctional, chemically precoupled precursors to chromophoric units. The resulting polymers have a head-to-head, tail-to-tail topology (a syndioregic arrangement of rigid units along the polymer backbone), and the molecular units are designed to fold into an accordion conformation. This useful microstructure (a three-dimensional conformation) forms spontaneously (self-assembles); or, it can be brought about by field-assisted processing. Films and fibers of these polymers have useful second-order nonlinear optical properties, and may be used for the modulation and switching of optical communications signals.

Descriptors :   *POLYMERS, *PATENTS, *NONLINEAR OPTICS, COPOLYMERIZATION, FIBERS, FILMS, MICROSTRUCTURE, MODULATION, OPTICAL COMMUNICATIONS, OPTICAL PROPERTIES, PRECURSORS, PROCESSING, SIGNALS, SWITCHING, THREE DIMENSIONAL, TOPOLOGY, CHROMOPHORES

Subject Categories : Polymer Chemistry
      Physical Chemistry
      Optics
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE