八-4-(四氢糠氧基)双酞菁钕LB膜的电子吸收光谱和扫描隧道显微镜形貌分析

UV Vis and STM Studies of LB Films of Octa Tetrahydrofuryloxy Nd Bisphthalocyanine

测定了八－４－（四氢糠氧基）双酞菁钕在亚相水面上的π－Ａ曲线，在石英和高取向热解石墨（ＨＯＰＧ）基底上制备了它的ＬＢ膜，解释了八－４－（四氢糠氧基）双酞菁钕的ＵＶ－Ｖｉｓ谱带．并采用扫描隧道显微镜方法观察了ＬＢ膜的形貌，发现在ＨＯＰＧ上双酞菁钕分子是随机分布并有多聚体形成而在ＨＯＰＧ上修饰一层硬脂酸后可得到均匀有序单分散的双酞菁钕分布．

Surface pressure/monomolecular area ( π A) isotherm of octa tetrahydrofuryloxy Nd bisphthalocyanine monolayer on the water subphase has been investigated. LB films have been prepared and characterized using UV Vis absorption spectroscopy. LB films on highly oriented pyrolytic graphite (HOPG) were investigated using STM. It can be seen from the micrograph that Nd bisphthalocyanine molecules distributed randomly in multimers on HOPG, but uniformly and dispersively in an ordered form when a layer of stearic acid has been deposited on HOPG before LB preparation. All results showed that Nd bisphthalocyanine macrocycles oriented perpendicular to the substrate.