Effect of the Structure of Aromatic Nitro Compounds on the Efficiency of Luminescence Quenching of the Metal-Organic Framework of Zinc(II) 4,4E(1)-Diphenyldicarboxylate

摘要

The efficiency of luminescence quenching of the metal-organic framework {[Zn(L)(DPDC)]}(n) (L = 1,4,8,11-tetraazacyclotetradecane, DPDC2- = 4,4E(1)-diphenyldicarboxylate) by aromatic nitro compounds depends on their structure. Nitrobenzene and nitrotoluene derivatives are found to have a much smaller effect than phenol and aniline derivatives. It is suggested that there is no electron transfer due to pi-stacking interactions in these systems and a mechanism involving resonance energy transfer due to overlap of the luminophore emission band and the absorption bands of the quenchers is more probable.