We describe here a short and efficient synthetic route for incorporating terpyridine based metal complexes at the 3â²-extremity of both single and bis-oligonucleotide (bis-ODN) stretches to form novel metal complexâODN conjugates. All single stranded mono and bis-ODN tethered metal complexes and the respective duplex ODNs were characterized by circular dichroism spectroscopy and UV-Vis melting experiments. Duplexes formed by these hybrid metal complexâDNA conjugates showed around 4â5 °C stabilization with respect to the unmodified duplexes. Moreover hybridization of two complementary bis-ODN tethered metal complexes at different ratios in solution gave rise to a self-assembled nanometric linear network, which was characterized by non-denaturing gel electrophoresis and TEM studies. Thus, our simple synthetic strategy would contribute to develop multimetallic 2D-DNA nanoarrays where we can place different metal complexes at regular intervals along the ODN stretches.
这篇文章描述了一种将特
吡啶基
金属配合物引入到单链和双链寡核苷酸(ODN)3'末端的简短高效合成路线,形成新型
金属配合物-ODN共轭物。所有单链单体和双链ODN连接的
金属配合物及其各自的双链ODN都通过圆二色谱和UV-Vis熔解实验进行了表征。这些杂化
金属配合物-DNA共轭物形成的双链相对于未修饰的双链稳定性提高了4-5°C。此外,在溶液中以不同比例杂交两条互补的双链ODN连接的
金属配合物,可形成自组装的纳米线性网络,这通过非变性凝胶电泳和
TEM研究进行了表征。因此,这种简单的合成策略有助于开发多
金属2D-DNA纳米阵列,我们可以在ODN链上按规律间隔放置不同的
金属配合物。