Journal
ORGANIC & BIOMOLECULAR CHEMISTRY
Volume 11, Issue 31, Pages 5184-5188Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ob40930a
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- Deutsche Forschungsgemeinschaft [SFB 613]
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An N-methylphenanthrolinium-annelated spirooxazine derivative 2(SO) whose DNA-intercalating properties are reversibly changed by a photochromic reaction was prepared. Upon irradiation at 350 nm the spirooxazine is transformed to the corresponding photomerocyanine 2(PM) that binds to DNA. After irradiation with visible light the spirooxazine 2(SO), which exhibits no significant DNA-binding properties, is regained. The association of 2(PM) with DNA was examined by CD and absorption spectroscopy, fluorescent intercalator displacement and viscometric titration.
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