Accordion-like polymers for nonlinear applications

Details Accordion-like polymers for nonlinear applications Accordion-like polymers for nonlinear applications

1992-03-20

1993-09-21

Kight, III, John

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528314, 528321, 528331, 528335, 528337, 430286, C08G 6908, C08G 7310

Patent

active

052470555

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 difuntional, 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.

REFERENCES:
patent: 4900127 (1990-02-01), Robello et al.
patent: 5102973 (1992-04-01), Iimura et al.

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