Laterale Selbstorganisation an Grenzflächen durch inter- und intramolekulare Wechselwirkung

有了这个建议，我们希望增加润湿和聚合物薄膜领域的基础知识，作为分子结构，分子间相互作用和由于相邻界面的力的函数。为此，我们研究了空气/水界面处的柔性大分子，并利用以下几点：（i）可以容易地确定和调节表面浓度（ii）薄膜可以更快地达到平衡，由于流体子相（iii），人们可以很容易地从侧向压力的形状确定相变。除了这些体系的热力学的完整表征之外，我们还想使用镜面x-射线衍射表征聚合物链段沿着薄膜法线的密度分布。射线和中子的反射率，并获得信息的横向结构，使用离镜面同步辐射反射计和扫描力显微镜。

With this proposal we want to increase the fundamental knowledge in the field of wetting and thin films of polymers as a function of the molecular architecture, intermolecular interactions and the forces due to the adjacent interfaces. For this purpose we investigate flexible macromolecules at the air/water interface and take advantage of the following points: (i) one can easily determine and tune the surface concentration (ii) the thin films can reach equilibrium faster, because of the fluid subphase (iii) one can quite easily determine phase transitions from the shape of the lateral pressure/area isotherms.Besides a complete characterization of the thermodynamics of these systems we want to characterize the density profile of the polymer segments along the normal to the thin film using specular x-ray and neutron reflectivity and obtain information on the lateral structure using off-specular synchrotron reflectometry and scanning force microscopy.