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The Handedness of DNA Assembly around Carbon Nanotubes Is Determined by the Chirality of DNA.
The Journal of Physical Chemistry B ( IF 2.8 ) Pub Date : 2020-06-05 , DOI: 10.1021/acs.jpcb.0c02816
Gül H Zerze 1 , Frank H Stillinger 2 , Pablo G Debenedetti 1
Affiliation  

Single-stranded DNA chains enable postsynthesis sorting of single-walled carbon nanotubes (CNTs) according to their diameter and helicity by wrapping helically around CNT surfaces. Both DNA chains and CNTs in these CNT–DNA conjugates are intrinsically chiral. Using a single-stranded DNA chain in both of its chiral realizations, we systematically study cross-chiral interactions between DNA and CNTs by varying the helicity of CNTs within a relatively narrow range of diameters. We find that regardless of the helicity or handedness of the carbon nanotube, the chirality of DNA dictates the handedness of its predominant helical wrap around carbon nanotubes.

中文翻译:

碳纳米管周围的DNA组装的操作性取决于DNA的手性。

单链DNA链可以通过螺旋缠绕在CNT表面周围,从而根据直径和螺旋度对单壁碳纳米管(CNT)进行后合成排序。这些CNT-DNA共轭物中的DNA链和CNT本质上都是手性的。在两个手性实现中都使用单链DNA链,我们通过在相对狭窄的直径范围内改变CNT的螺旋度来系统地研究DNA与CNT之间的交叉手性相互作用。我们发现,不管碳纳米管的螺旋度或旋顺性,DNA的手性都决定了其主要螺旋缠绕在碳纳米管周围的旋度。
更新日期:2020-07-02
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