对单壁碳纳米管-DNA复合物(SWCNT-DNA)的微观结构和电化学性质进行了研究.TEM观察表明:通过DNA辅助超声,绝大多数成束单壁管离散为单根分散的碳管.AFM结果进一步证明DNA均匀缠绕在单根离散的碳纳米管外壁,形成稳定的SWCNT-DNA复合物.这一自组装过程同时也是碳管的纯化过程,催化剂颗粒在超声过程中被除去.初步探讨了SWCNT-DNA复合物的电化学电容性质,结果显示:通过与单链DNA(ss-DNA)的杂化作用,SWCNTs的电化学性质得到改善.与SWCNTs相比,SWCNT-DNA复合物的比电容提高了117.9%.
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