ArticleInorganic chemistry2026
Enhancing the Antimicrobial Photodynamic Activity of Heteroleptic Ruthenium(II) Complexes: Role of Asymmetric
Article in Inorganic chemistry, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
With their highly stability and tunable photophysical properties, Ru(II) complexes are excellent photosensitizer candidates for antimicrobial photodynamic therapy (aPDT), offering selective bacterial targeting without driving resistance. A series of heteroleptic Ru(II) N-donor complexes, incorporating symmetric N-bidentate ligands such as 1,10-phenanthroline and 4,4'-diphenyl-2,2'-bipyridine, together with asymmetric N-bidentate ligands including pyridine-pyrazole, iminopyridines, and iminoquinoline, have been successfully synthesized to assess their potential as photosensitizers for aPDT. All Ru(II) complexes exhibited distorted octahedral coordination, unique ligand arrangements, and hydrophobicity, which influenced their electronic properties and photodynamic activity. TDDFT calculations reliably reproduced experimental trends. All complexes produce singlet oxygen and superoxide radical anion upon exposure to visible light and are capable of photoinactivating
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