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[求助]
关于Ru(II)的多吡啶化合物荧光淬灭的理解
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Upon excitation into the metal-to-ligand charge transfer (MLCT) band, dppz complexes of Ru(II) are highly emissive when intercalated into DNA but show significant quenching when measured in aqueous buffer because of hydrogen bonding to the phenazine nitrogen atoms. Thus, these complexes exhibit a “lightswitch” effect in DNA because intercalation of the dppz ligand into the DNA π-stack protects the phenazine nitrogens from quenching by aqueous solvent, restoring luminescence 在水溶液 buffer 中Ru(II)的多吡啶化合物与DNA以插入模式作用而发生荧光淬灭。而后半句却说可以恢复发光，没理解明白，请高手帮忙解释一些，非常感谢！ |
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