摘要
制备了一种含肉桂酸基团的Bola型两亲分子HDC(4-(10-羟基癸氧基)-10-羟基癸氧基肉桂酸酯).该分子在空气/水界面形成多分子层Langm uir膜结构.紫外光照可使膜中H D C 分子发生光致二聚,也可使H D C与1,16-十六碳二醇形成的混和膜中HDC 分子发生二聚.光照前后膜中分子倾角分别为58.8°和53.2°.从实验结果推测了分子排列模型,认为HDC 分子在LB膜中有序排列,这来源于分子间π-π相互作用和疏水亚甲基链的Z 型构象堆积.
A bolaamphiphile containing cinnamic acid moiety, [4-(10-hydroxydecanyloxy)-10-hydroxydecanylcinnamate, abbreviated HDC], was synthesized and the LB films of HDC were studied. It was found from the results of pi-A isotherms that multilayers of HDC were formed at the air/water interface. The photoreaction of HDC in LB films induced by UV light was investigated with UV and IR measurements. Photodimerization also took place in the mixed LB films of HDC and 1,16-hexadecanediol. The spectra results showed that the HDC molecules assembled orderly due to the separated recognition of pi-pi interaction and the zigzag stacking of methylene groups. XRD studies indicated that bilayers formed in the LB films with a tilt angle of 58.8 degrees and 53.2 degrees before and after UV irradiation, respectively. A packing model of HDC was also proposed.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2005年第5期550-555,共6页
Acta Physico-Chimica Sinica
基金
国家自然科学基金(20233010,20373003,20425310)
教育部博士点资助项目~~
关键词
Bola型肉桂酸衍生物
LB膜
光致二聚
分子排列
分子识别
LANGMUIR-BLODGETT-FILMS
2-HEADED SURFACTANTS
MICELLAR PROPERTIES
AQUEOUS-SOLUTIONS
LIQUID-CRYSTALS
MIXED SYSTEMS
MONOLAYERS
PHOTODIMERIZATION
BOLAAMPHIPHILES
AGGREGATION
