Block copolymers with different backbone compositions have been prepared by the condensation of dimethylamino terminated poly(dimethylsiloxane) (PDMS) and hydro
<正>As DNA cleavage agent,a new diiron(Ⅲ) complex (Fe_2L_b),in which a DNA-intercalator (pyrene) is covalently linked to a diferric moiety,has been synthesized