Accession Number:

ADA235962

Title:

A New Approach to Design of Cross-Linked Second-Order Nonlinear Optical

Descriptive Note:

Technical rept. no. 2, 1 Jun 1990-31 May 1991

Corporate Author:

LOWELL UNIV MA DEPT OF CHEMISTRY

Personal Author(s):

• Mandal, B. K.
• Lee, J. Y.
• Zhu, X. F.
• Chen, Y. M.
• Prakeenvincha, E.

Report Date:

1991-05-03

Pagination or Media Count:

10.0

Abstract:

A new class of crosslinked second-order nonlinear optical NLO polymers has been developed by processing a NLO-dye and a polymer similar to conventional doped polymer system. Intermolecular crosslinking was carried out by UV radiation subsequent to electric field induced poling of the composite. Cinnamate C6H5-CHCH-CO2- and styrylacrylate C6H5-CHCH-CHCH-CO2- moieties are selected as the photoreactive chromophores which are attached to both the NLO molecules at two positions and randomly substituted to a vinyl polymer. The poled crosslinked polymers exhibit stable nonlinear activity over a long period of time as characterized by temporal response of second-harmonic generation signal and UV absorption characteristics.

Descriptors:

• *POLYMERS
• ULTRAVIOLET RADIATION
• MOLECULES
• LONG RANGE(TIME)
• VINYL PLASTICS
• NONLINEAR SYSTEMS
• MOLECULAR STRUCTURE
• DOPING
• ABSORPTION
• STABILITY
• CROSSLINKING(CHEMISTRY)

Subject Categories:

• Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE