2-Amino-4-(4-tert-butylphenylamino)-6-{4-[(4-pyridyl) ethynyl] phenylamino}-1, 3, 5-triazine was synthesised and mixed with dibutylbarbituric acid in CDCl3 to study rosette formation. The formation of a double decker rosette aggregate was studied by complexation of the pyridyl groups to a zinc containing porphyrin dimer.