Accession Number:

ADA210496

Title:

Monolayer Formation Characteristics of Novel Organic Molecules with Nonlinear Optically Active Moieties

Descriptive Note:

Technical rept. Jul 1988-1989

Corporate Author:

LOWELL UNIV MA POLYMER SCIENCE PROGRAM

Report Date:

1989-05-31

Pagination or Media Count:

24.0

Abstract:

Organic materials have recently been recognized as promising candidates for nonlinear optics NLO applications in view of their fast response time and large non-resonant nonlinear effects in comparison with their inorganic counterparts. Novel organic materials that form molecular crystals and polymers with optimized molecular structure are therefore being synthesized and their NLO response assessed in attempts to obtain superior material performance. Another advantage of organic and polymeric materials is their relative ease of processing. It is possible to fabricate ultra thin films of organic NLO material that are suitably designed using the Langmuir-Blodgett L-B technique. A number of novel electroactive materials with amphibolic molecular structure containing COOH, OH, NMe2, OMe, NO2, and CN were synthesized. This paper discusses the monolayer forming ability of these novel compounds. The stability of the monolayer as a function of pH, temperature, composition of the material in mixed monolayers and the nature of the subphase are investigated. Appropriate choice of experimental conditions under which a stable monolayer is obtained for each material is indicated.

Subject Categories:

  • Organic Chemistry
  • Physical Chemistry
  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE