The investigation of the dipole-dipole action direction and molecular space configuration effect during the dipole–dipole induced azobenzene supramolecular self-assembly

Abstract

In order to study the effect of dipole-dipole action direction and molecular space configuration on supramolecular self-assembly of azobenzene, three azobenzene dye molecules N1 (" linear "), N2 (" L ") and N3 (" U ") were designed. First, the feasibility of molecular design is verified by theoretical calculations and then synthesized by experiments. By adjusting the direction of the molecular dipole moment and the spatial configuration of the molecule, the three dye molecules self-assemble to form supramolecular self-assemblers with different structures. The properties of three azobenzene dye molecules were studied by IR、NMR、 X-ray diffraction and UV–vis spectra. Theoretical calculation and experimental results show that the direction of dipole dipole interaction and molecular space configuration have important effects on the supramolecular self-assembly morphology of azobenzene.