摘要
Recently, there has been considerable attention focused on the binding of metal complexes to DNA. Since the middle 1980s, Barton et al. have found that the chirl octahedral complexes that contain planar aromatic ligands can bind to double-helical DNA stereoselectively, and the chirl intercalator [Ru（phen）<sub>3</sub>]<sup>3+</sup> has been used as the probe to recognize B and Z-form DNA. The photophysical studies indicated that the complexes containing 1, 10-phenanthroline or larger planar aromatic ligands can be intercalated into DNA stereoselectively and the complexes containing smaller ligands such as 2, 2’-
