화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals, Vol.349, 251-254, 2000
A two-dimensionally extended conjugation from an amphiphilic melamine and glyoxal
A two-dimensional reaction of a melamine derivative with glyoxal was carried out at the air-water interface for melamine-based conjugation Langmuir-Blodgett film. An amphiphilic derivative of melamine, N-(4,6-diamino-1,3,5-triazin-2-yl) octadecanamide (NDTOA), was synthesized by the reaction of melamine with stearic acid. Monolayers of the NDTOA were spread on aqueous 3% glyoxal subphases with various pH. The surface pressure-area isotherms revealed more expanded monolayer area on the acidic or basic subphases. The molecular structure of the LB films was confirmed by the FT-IR and UV spectroscopy. Characteristic red-shifts of UV absorption peaks (lambda (max)) were detected from 201 nm to 218 nm and 240 nm, 2 or 3 conjugation number could be evaluated from the peal; shift.