Local viscosity and density in the interphase of polymers near a solid interface - fluorescence correlation spectroscopy and neutron reflectometry

在第二个资助期，该项目的目标是获得关于基质性质对聚合物界面相影响的更详细信息，并研究残留溶剂的作用。我们希望继续研究聚合物间相的质量密度和示踪剂扩散系数，这可以用飞行时间中子反射法和全内反射照明（TIR-FCS）的荧光相关光谱法获得。此外，我们希望通过掠入射小角中子散射来研究侧链构象。要解决的方法发展是增加表面等离子体共振/光波导光谱的表面灵敏度和优化TIR-FCS设置。

In the second funding period, the goal of the project is to gain more detailed information on the influence of the substrate properties on the polymer interphase and to investigate the role of residual solvent. We wish to continue to study the mass density and the tracer diffusivity in the polymer interphase, which are accessible using time-of-flight neutron reflectometry and fluorescence correlation spectroscopy with total internal reflection illumination (TIR-FCS). Moreover, we wish to investigate the lateral chain conformations by means of grazing-incidence small-angle neutron scattering. Methodological developments to be addressed are the increase of the surface sensitivity of surface plasmon resonance / optical waveguide spectroscopy and the optimization of the TIR-FCS setup.