Self-Assemblies of Zinc Complexes for Aggregation-Induced Emission Luminogen Precursors.

ABSTRACT: Positional isomers of zinc-nitrobenzoate complexes possessing pyridine -3-(or-4-) carboxamide are used for a comparative theoretical and experimental study to understand their utility as model complexes to understand the role of metal-to-ligand charge transfer in aggregation-induced emission (AIE). Among the five different model zinc complexes, four of them are non-ionic, and one is an ionic complex. The frontier molecular energy levels of different combinations of the positional isomeric complexes and the absorption maximum were ascertained by density functional theory calculations. The PolyQ value obtained from solid samples of each complex is different. Shifts in the emissions to higher wavelengths than the expected emission for the S1 to S0 transition were observed due to aggregations.

SUBMITTER: Brahma R 

PROVIDER: S-EPMC7045797 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature