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Published on: May 12, 2023
[Ru(bpy)(3-n)(dpb)(n)](2+): unusual photophysical property and efficient DNA photocleavage activity
Qian-Xiong Zhou1, Wan-Hua Lei, Yi Sun
1Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
Abstract:
The sequential replacement of a bpy ligand (bpy = 2,2'-bipyridine) by a dpb ligand (dpb = 2,3-bis(2-pyridyl) benzoquinoxaline) in the series [Ru(bpy)(3-n)(dpb)(n)](2+) (n = 1-3) leads to a remarkable increase of the excited state lifetime, the (1)O(2) quantum yield, and the binding affinity toward dsDNA, rendering both [Ru(bpy)(dpb)(2)](2+) and [Ru(dpb)(3)](2+) efficient DNA photocleavage activities upon red light irradiation (>or=600 nm).
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