Self-Assembled Alkynyl Azoles and Benzoazoles as Colored Optical Waveguides

Different alkynyl azoles and benzoazoles have been synthesized in good yields by carbon-carbon coupling reactions. The self-assembly of some of these compounds by the slow diffusion technique led to well-defined ribbons and needle-like aggregates. The X-ray study of some materials showed that the CH- interactions involving the CC triple bond and the heteroatoms induce aggregation along with H-bonds due to the methoxy groups. A fluorescence and confocal optical microscopy study of most of the aggregates indicated optical waveguide behavior with different colors.