Nanometric scale investigation of the nonlinear efficiency of perhydrotriphenylene inclusion compounds

摘要: Abstract A two-photon polarized microscopy technique has been implemented to investigate the nonlinear efficiency and molecular organization in organic inclusion compounds. Different chromophores have included as guest molecules perhydrotriphenylene (PHTP) channels yielding needle-shaped crystals of either millimetric or submicrometric size depending on sample preparation. Polarization responses second harmonic generation (SHG) fluorescence (TPF) are shown provide complete information crystalline quality such structures. In particular, macroscopic exhibit one-dimensional ordering along needle axis with occasional local orientational defects. Their zero frequency can reach up 340 pm/V 4-dimethylamino-4′-nitroazobenzene a guest, which be ascribed about 80% setting-up noncentrosymmetric sub-lattice. This order is furthermore preserved structures, promising systems towards SHG-active nanoparticles.