Accession Number:

ADA235858

Title:

Langmuir-Blodgett Films of Aromatic Schiff's Bases Functionalized in the Side Chains of Polymethacrylate

Descriptive Note:

Technical rept. no. 21, 1 Jun 1990-31 May 1991

Corporate Author:

ARMY ELECTRONICS COMMAND FORT MONMOUTH NJ ELECTRONIC COMPONENTS LAB

Personal Author(s):

• Takahashi, T.
• Miller, P.
• Chen, Y. M.
• Samuelson, L.
• Galotti, D. M.

Report Date:

1991-05-03

Pagination or Media Count:

32.0

Abstract:

Langmuir-Blodgett LB film formation has been investigated for polymers in which nonlinear optical NLO moieties are attached in the side chain of polymethacrylate PMA backbone. Polymer monolayer was successfully transferred onto hydrophilic glass substrates using a moving wall type LB trough. The LB films were characterized by pressure-area isotherm, polarized UV- visible spectra, ellipsometry and second harmonic generation measurement. The characterization shows that NLO moieties in the side chain are inclined to the plane of the substrate at a shallow angle. The second order nonlinear coefficient and molecular hyperpolarizability were also calculated.

Descriptors:

• *POLYMERS
• POLARIZATION
• ULTRAVIOLET RADIATION
• LAYERS
• FILMS
• HYDROPHILIA
• GLASS
• CHEMICAL BONDS
• SPECTRA
• VISIBLE SPECTRA
• ELLIPSOMETERS
• HARMONIC GENERATORS
• MEASUREMENT
• SUBSTRATES

Subject Categories:

• Polymer Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE