SYNTHESIS OF AMPHIPEILIE TEMPO DERIVATIVE AND CHARACTERIZATION OF LANGMUIR MONOLAYERS OF AMPHIPHILIC ALKYL-TEMPOS AT THE AIR/WATER INTERFACE
作者单位：Department of ChemistryPukyong National University Busan 608-737 Korea Department of ChemistryPukyong National University Busan 608-737 Korea
会议名称：《Asia Conference on Nanoscience and Nanotechnology Abstracts Book》
会议日期：2004年
学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学]
关 键 词：Langmuir monolayer BAM TEMPO.
摘 要：正 The amphiphilic TEMPO molecules consist of two dissimilar parts. One part is hydrophilic（bead） and the rest part is hydrophobic（tail）. The derivatives of 4-alkaneamino-2,2,6,6-tetramethyl-1-piperidinyloxy radical （C12-amino-TEMPO） was synthesized with 4-amino-TEMPO and carboxylic acid. The C12-amino-TEMPOs equilibrated at the air/water interface form Langmuir monolayer by classical Langmuir monolayer techniques. The stable monolayers of C14-22-amino-TEMPOs were characterized by pressure-area isotherms. The features ofcollapse pressure of C14-22-amino-TEMPOs were confirmed on alkyl chain length. Limiting area points and take-off area points from surface pressure-MMA isotherms were subjected to the influence of subphase. The monolayers of C22-amino-TEMPO which has longer alkyl chain were characterized by Brewster Angle Microscopy. So we can confirm phase transition by BAM images as monolayer is expanding at the roomtemperature.