Majewski J, Kuhl T L, Wong J Y, Smith G S
Manuel Lujan Jr. Neutron Scattering Center, LANSCE-12, MS H805, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
J Biotechnol. 2000 Sep;74(3):207-31. doi: 10.1016/s1389-0352(00)00011-8.
Simple mono- and bilayers, built of amphiphilic molecules and prepared at air-liquid or solid-liquid interfaces, can be used as models to study such effects as water penetration, hydrocarbon chain packing, and structural changes due to head group modification. In the paper, we will discuss neutron and X-ray reflectometry and grazing incidence X-ray diffraction techniques used to explore structures of such ultra-thin organic films in different environments. We will illustrate the use of these methods to characterize the morphologies of the following systems: (i) polyethylene glycol-modified distearoylphosphatidylethanolamine monolayers at air-liquid and solid-liquid interfaces; and (ii) assemblies of branched polyethyleneimine polymer and dimyristoylphophatidylcholine lipid at solid-liquid interfaces.
由两亲分子构成、在气-液或固-液界面制备的简单单层膜和双层膜，可用作模型来研究诸如水渗透、烃链堆积以及由于头基修饰引起的结构变化等效应。在本文中，我们将讨论用于探索不同环境下此类超薄有机膜结构的中子反射和X射线反射测量以及掠入射X射线衍射技术。我们将举例说明这些方法在表征以下体系形态方面的应用：(i) 气-液和固-液界面处聚乙二醇修饰的二硬脂酰磷脂酰乙醇胺单层膜；以及 (ii) 固-液界面处支化聚乙烯亚胺聚合物和二肉豆蔻酰磷脂酰胆碱脂质的组装体。
