Accession Number:

ADA280230

Title:

Organic NLO Polymers. 2. Main-Chain and Guest-Host Chi(2)NLO Polymers: NLO-phore Structure Versus Poling

Descriptive Note:

Technical rept. 1 Jun 1993-31 May 1994

Corporate Author:

UTAH STATE UNIV LOGAN DEPT OF CHEMISTRY AND BIOCHEMISTRY

Personal Author(s):

• Wright, Michael E.
• Mullick, Sanjoy
• Lackritz, Hilary S.
• Liu, Lee-Yin

Report Date:

1994-05-28

Pagination or Media Count:

35.0

Abstract:

Several new dipolar main-chain X 2 nonlinear optical NLO polymers were prepared in the study. The NLO-phores, based on alkoxy substituted alpha- cyanoacrylates, were also placed as monomeric guests within a polymethyl methacrylate host. Polar alignment of the NLO-phores by corona poling and their relaxation behavior was monitored by detecting the optical signal resulting from second harmonic generation. By making small variations in the structure of the NLO-phore, it was found that when hydrogen-bonding groups are rigidly coupled to the NLO-phore they are very effective for retaining polar asymmetry induced by poling and induced no deleterious effects on the alignment process. For main- chain NLOPs, it appears that for optimum alignment the bonding-axis and the polar-axis should not be parallel. NonLinear Optical, Corona Poling, Rigid-Rod Polymers

Descriptors:

• *SECOND HARMONIC GENERATION
• *POLYMERS
• *ORGANIC COMPOUNDS
• *ACRYLATES
• *NONLINEAR OPTICS
• COMPOSITE MATERIALS
• HYDROGEN
• VARIATIONS
• SIGNALS
• BONDING
• ALKOXY RADICALS
• CORONAS
• RIGIDITY
• POLARITY
• ESTERS
• RODS
• RELAXATION
• MONOMERS
• CHAINS
• ASYMMETRY
• ALIGNMENT
• STRUCTURES
• POLYMETHYL METHACRYLATE
• ELECTRIC FIELDS

Subject Categories:

• Organic Chemistry
• Polymer Chemistry
• Electricity and Magnetism
• Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE