高等学校化学学报2001，Vol.22Issue(5)：722-726,5.
胆红素及其两亲衍生物的Langmuir-Blodgett膜研究
Studies on Langmuir-Blodgett Films of Bilirubin and Its Amphiphilic Derivatives
摘要
Abstract
Monolayer formation, LB film fabrication of bilirubin(1), its two kinds of amphiphilic derivatives, bilirubin dioctadecyl ester［B(COOC18H37)2, 2］ and dioctadecyl bilirubinamide ［B(CONHC18H37)2, 3］ at an air-water interface on subphases with different pH values and subphases containing different metal ions were investigated and compared with 1. Some information regarding the packing density in monolayers, molecular orientation and complexation by metal ions has been obtained by means of many physical measurements such as the π-A isotherms, X-ray photoelectron spectroscopy, UV-visible spectroscopy and low-angle X-ray diffraction. At the air-water interface the amphiphilic ligands with their complexing head groups in contact with the aqueous phase can form metal complexes with many metal ions present in the aqueous phase. The formation of ligand-metal complexes leads to changes in the area per molecule and in the collapse pressure, as well as to changes in the XPS and UV-visible absorption spectra of the monolayer assemblies. Low-angle X-ray diffraction indicates that the LB films of 1, 2 and 3 were Y-type with bilayer spacing of ca. 2.50, 5.60 and 5.65 nm. The coordination in ordered molecular films are much different from that in bulk solution. It can help us to understand the formation and prevent and cure of gallstones.关键词
单分子膜/Langmuir-Blodgett膜/胆红素衍生物/酸度/配位分类
化学化工引用本文复制引用
欧阳健明,林伟汉,黄春晓,姚秀琼..胆红素及其两亲衍生物的Langmuir-Blodgett膜研究[J].高等学校化学学报,2001,22(5):722-726,5.基金项目
国家自然科学基金重点项目 （）
