Multilamellar templates

Polymeric additives may also be used for modifying the electrode surface. Xing et al. recently reported on a novel approach for fabricating phospholipid/Ni(OH)2 superlattices by electrochemical deposition of the inorganic component into solid-supported multilamellar templates. 

The well-ordered multilamellar templates are produced by spreading a lipid solution on silicon surfaces. These templates are used as working electrodes and can preserve their lamellar structure in the electrolyte solution. The phospholipid (DC8,9PC), precursor to the membrane, contains a zwitterion type headgroup and two long alkyl chains (Figure 4.40). 

Formation from Template Surfaces Recently, a new method for the preparation of LUV was reported by Lasic et al. (1988). The method is based on a simple procedure which leads to the formation of homogeneous populations of LUV with a diameter of around L vim. Upon addition of solvent to a dry phospholipid film deposited on a template surface, vesicles are formed instantly without any chemical or physical treatment. The formation of multilamellar structures is prevented by inducing a surface charge on the bilayers. The size of the vesicles is controlled by the topography of the template surface on which the phospholipid film was deposited (Lasic, 1988). 

Another use of the DNA-lipid complex was reported by Wong and coworkers [33]. The DNA molecule structural features can be imprinted into CdS nanostructures by using self-assembled DNA-membrane templates. The initial application of the DNA-lipid multilamellar structure was the use as gene carriers in gene therapy, and many reports [34-39] were published (Fig. 6b). To prepare the DNA templates, anionic DNA was reacted with a mixture of... 

Templating. Solutions of multilamellar block copolymer vesicles could be... 

Surfactant assemblies are generally utilized as a template to form mesoporous shell. Vesicle-like hollow sihca particles can be prepared by sol-gel reactions in the presence of surfactants. Although most of the materials reported so far have multilamellar structures, hollow mesoporous silica particles with a single-walled vesicle structure have been prepared by the reaction of TEOS in the presence of a fluorinated surfactant (lH,lH,2//,2//-perfluorodecylpyridinium chloride). With... 

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