LB膜模板诱导晶体取向生长

LB膜作为模板可诱导晶体取向成核和外延生长，生成的晶体材料具有独特的微观结构和优异的物理化学性能。这种方法对于生物矿化现象的研究以及新颖材料合成策略的设计等方面具有重要的启示意义。本文从LB膜诱导晶体取向生长的机理及利用等方面综述了该领域研究的最新进展。

Eu(Ⅲ)、Tb(Ⅲ)双酞菁配合物的合成及其LB膜的荧光性

合成了八-4-（正壬氧基）酞菁铽（Ⅲ）（A）、八-4-（四氢糠氧基）酞菁（Ⅲ）（B）、双酞菁铽（Ⅲ）（C）、八-4-硝基酞菁铽（Ⅲ）（D）,并通过元素分析、红外光谱、质谱和紫外.可见光谱加以确认。配合物B的π-A曲线表明它有很好的成膜性,Y型沉积形成的LB膜材料有很强的荧光响应,随着LB膜厚度的增加,荧光性增强掺杂邻菲咯啉形成的混合LB膜,其荧光性比纯膜强。n（配合物B）：n（邻菲咯啉）＝1：10时有最好的荧光行为.

十二烷基苯磺酸在掺杂态聚苯胺LB膜中的分子取向

本文利用偏振红外光谱，研究了十二烷基苯磺酸分子在掺杂态聚苯胺LB膜中的分子取向。计算结果表明，十二烷基苯磺酸分子的烷基链是与基底法线方向呈17°角度排布的，由X射线小角衍射峰推算出，在LB膜的沉积方向上，十二烷基苯磺酸掺杂的聚苯胺分子的层间距为2.95nm。

Study on the self-packing of SnO2 nanoparticles at the air-hydrosol interface and its composite LB films with arachidic acid

SnO2 nanoparticles were found to self-pack at the air-hydrosol interface and form a nanoparticulate film. The self-packed films were observed under a Brewster angle microscope, and investigated by recording the time evolution of surface pressure and pi-A isotherms. The results show that SnO2 nanoparticles take 3 h to form a complete film at the air-hydrosol interface. Composite monolayers of SnO2 and arachidic acid were obtained by spreading arachidic acid onto a fresh hydrosol surface. Composite Y-type LB films were transferred from the air-hydrosol interface onto substrates, and characterized by FTIR, UV-vis, X-ray diffraction spectroscopy and TEM techniques. The results show that the composite films have good structure, with SnO2 nanoparticles uniformly and compactly distributed in the arachidate matrix. (C) 1998 Elsevier Science S.A. All rights reserved.

Effect of Eu3+ on the domain structures in phosphatidylcholine LB monolayer film observed by atomic force microscopy

Ordered domain structures were observed by atomic force microscope in dipalmitoylphosphatidycholine monolayer film, which was spread on the subphase of Eu3+ solution.

可溶性聚酰亚胺LB膜对碳钢的缓蚀作用的研究

应用可溶性聚酰亚胺(PI)Langmuir-Blodgett(LB)膜沉积在碳钢电极上，研究其在中性及酸性介质中对碳钢的缓蚀作用．结果表明PILB膜在中性及酸性介质中对碳钢有较好的缓蚀作用，单分子层数目对缓蚀效率有很大的影响.

四硫代富瓦烯/四氰基对二次甲基苯醌单分子膜气-液界面性质及LB膜组装体的紫外可见光谱

几种电子给体(四硫代富瓦烯，TTF)、电子受体(长链四氰基对二次甲基苯醌；C18TCNQ)及它们相应的1:1摩尔比复合物的气－液界面分子行为表明：不带长链的TTC1-TTF、BEDT-TTF的成膜性在其与C18TCNQ形成复合物之后均得到显著改善。C16TTF、C18TCNQ及两者不同结构ＬＢ膜组装体的紫外可见光谱研究发现：C18TCNQ在其单独的Y-型 膜中摩尔吸光系数是7.5×103，而在交替组装体中其摩尔吸光系数是1.3×103，给受体之间 的相互作用导致跃迁偶极矩减小，从而引起吸光系数减小4倍多。

铕对磷脂酰胆碱LB单分子膜结构影响的原子力显微镜观察

用原子力显微镜观察到亚相中Eu~(3+)诱导二棕榈酰磷脂酰胆碱Langmuir—Blodgett(LB)单分子膜出现有规则周期性条纹结构.

Liquid crystal alignment controlled by LB films

Copper phthalocyanine doped polymethacrylate Langmuir-Blodgett films were transferred to align a nematic liquid crystal 5CB, It is found that the pre-tilt angle of the liquid crystal can be controlled with the variation of the doped copper phthalocyanine molecular ratio and is correlated with the dichroic ratio of the aligning layer. The polarity of the aligning layer is regarded as the most likely underlying factor that causes the different LC alignment configurations. (C) 1997 Elsevier Science B.V.

Study on Ordered Assembly of SnO2 Nonoparticles-Arachidic Acid Composite LB Films

The hydrosol of SnO2 nanoparticles (NP) have been prepared by colloid chemistry method. The composite LB monolayer and multilayer of SnO2 NP-AA have been obtained by LB technique at the gas-liquid interface of the hydrosol subphase. The structures of the monolayer and multilayer were characterized by IR, UV-Vis, small angle X-ray diffraction spectroscopy and TEM technique, The results indicate that the coverage of SnO2 NP at the composite monolayer's surface is high and the sites of SnO2 NP are similar. The multilayer has good periodic structure.

Study on alternating LB films of charge-transfer complex of octadecyl-TCNQ and copper phthalocyanine derivative

Infrared spectra of alternating LB films of octadecyl-TCNQ/CuPc are studied. Charge-transfer complexes are formed in LB films and conductance increases about three orders than that of pure CuPc LB films.

Synthesis of a series of chiral copolymers with azo groups and investigations of reversible liquid crystalline alignment induced by the LB films of these materials

A series of liquid crystalline copolymers, poly{2-hydroxyethyl methacrylate}-co-{6-[4-(S-2-methyl-1-butyloxycarbonylphenylazo)phenoxy]hexyl methacrylate} with an azobenzene moiety as photoreactive mesogenic unit, was prepared and investigated by using DSC, polarized optical microscopy and X-ray diffraction. The results show that these polymers exhibit smectic phases. Z-type Langmuir-Blodgett films of these copolymers were successfully deposited onto calcium fluoride and quartz. Reversible homeotropic and planar liquid crystal alignments were induced by using the photochromism of the LB films of one of the copolymers containing 20.6 mol % of the azo unit.

光谱法研究入-4-(十六烷氧基)双酞菁镧的LB膜

测定了八－４－（十六烷氧基）双酞菁镧氯仿溶液在亚相水面上的π～Ａ曲线，同时制备了它的ＬＢ膜。应用红外光谱及紫外－可见光谱法对其进行了研究