Anion Influence of Emission Properties and DFT Calculations of Diprotonated and Triprotonated Terpyridines

摘要

abstract_textpIntense blue emissions were obtained by the interaction between protonated pyridine rings and the adjacent anion or adjacent PF6-. These compounds possess hydrogen bonds, which restrain the nonradiative decay to produce strong emission. By reacting of (L = terpy, tterpy and Clterpy) with a variety of acid (HF, HCl, HBr, H2SO4 and H3PO4) in water, triprotonated and diprotonated compounds LH3(3+) and LH2(2+) were prepared. Abbreviations used are terpy = 2,2':6',2 ''-terpyridine, tterpy = 4'-(4-tolyl)-2,2':6',2 ''-terpyridine and Clterpy = 4'-Chloro-2,2':6',2 ''-terpyridine. Intense emission in acetonitrile (Phi = 0.30) was obtained by attaching two protons to the nitrogen in (tterpyH(2))H2O(2+) and intermolecular hydrogen bonds to the two adjacent F atoms in PF6-./p/abstract_text