Polar glass structure for second-order nonlinear optics prepared by the Langmuir-Blodgett method using amorphous polymers with an azo-dye

• Published in: Japanese Journal of Applied Physics Vol. 31; no. 2A; pp. 365 - 368
• Main Authors: OKADA, S, MATSUDA, H, MASAKI, A, NAKANISHI, H, ABE, T, ITO, H
• Format: Journal Article
• Language: English
• Published: Tokyo Japanese journal of applied physics 01.02.1992
• Subjects: Applied sciences; Exact sciences and technology; Organic polymers; Physicochemistry of polymers; Properties and characterization; Structure, morphology and analysis; Acrylic copolymer; Glassy polymer; Azo dye; Non linear optics; Polar effect; Langmuir Blodgett layer; Methyl methacrylate copolymer; Structure
• ISSN: 0021-4922; 1347-4065
• DOI: 10.1143/JJAP.31.365

In order to obtain Langmuir-Blodgett (LB) films for second-order nonlinear optics, LB films of the amorphous copolymers synthesized from methyl methacrylate and 2-(N-ethyl-N-(4-(4-nitrophenyl)azo)phenyl)aminoethyl acrylate were investigated. From the measurement of F-A isotherms and UV and visible spectra of the Langmuir (L) film, it was estimated that the azo-dye moiety was squeezed out from the air-water interface into the subphase, and the dipoles of azo-dye align uniaxially in the direction perpendicular to the interface. The L film could be deposited into X-type multilayers by the horizontal lifting method, resulting in the formation of “polar glass.”