An equimolar mixture of two structurally related molecular building blocks self-assembles into a 2D non-crystalline bimolecular porous pattern at a liquid-solid interface as revealed by scanning tunneling microscopy.

The structure of polymer/nanoparticle interfaces was discussed using X-ray diffraction measurements with mixtures of polyacrylates [poly(ethyl acrylate) and poly(n-buthyl acrylate)] and nanoparticles (Al 2 O 3 and SiO 2). The amorphous halo with two peaks present for the bulk polymers changed, both in diffraction angle and intensity, into a peak in the mixtures. A novel polyacrylate structure at the interface (5-10 nm) with nanoparticles was formed with a specific chain conformation that was different from the bulk structure observed using Fourier transfer infrared spectroscopy.