Study of the Photophysical Properties and the DNA Binding of Enantiopure [Cr(TMP)₂(dppn)]³⁺ Complex.

ABSTRACT: The preparation, electrochemistry and photophysical properties of a heteroleptic chromium(III) polypyridyl complex rac-[Cr(TMP)₂(dppn)]³⁺ (1) containing two 3,4,7,8-tetramethyl-1,10-phenanthroline (TMP) ligands and the π-extended benzodipyrido[3,2-a:2',3'-c]phenazine (dppn) ligand are reported. The visible absorption spectrum of 1 reveals distinct bands between 320 and 420 nm characteristic of dppn-based ligand-centered transitions, with 1 found to be nonemissive in aqueous solution but weakly luminescent in aerated acetonitrile solution. Transient visible absorption (TrA) spectroscopy reveals that 400 nm excitation of 1 leads to initial population of a ligand-to-metal charge transfer (LMCT) state which evolves within tens of

SUBMITTER: Graczyk D 

PROVIDER: S-EPMC11653251 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature