Smectic phase in suspensions of gapped DNA duplexes
文献类型：期刊论文
| 作者 | Salamonczyk, Miroslaw; Zhang, Jing; Portale, Giuseppe; Zhu, Chenhui; Kentzinger, Emmanuel; Gleeson, James T.; Jakli, Antal; De Michele, Cristiano; Dhont, Jan K. G.; Sprunt, Samuel |
| 刊名 | NATURE COMMUNICATIONS
 |
| 出版日期 | 2016-11-15 |
| 卷号 | 7期号:0页码:- |
| 英文摘要 | Smectic ordering in aqueous solutions of monodisperse stiff double-stranded DNA fragments is known not to occur, despite the fact that these systems exhibit both chiral nematic and columnar mesophases. Here, we show, unambiguously, that a smectic-A type of phase is formed by increasing the DNA's flexibility through the introduction of an unpaired single-stranded DNA spacer in the middle of each duplex. This is unusual for a lyotropic system, where flexibility typically destabilizes the smectic phase. We also report on simulations suggesting that the gapped duplexes (resembling chain-sticks) attain a folded conformation in the smectic layers, and argue that this layer structure, which we designate as smectic-fA phase, is thermodynamically stabilized by both entropic and energetic contributions to the system's free energy. Our results demonstrate that DNA as a building block offers an exquisitely tunable means to engineer a potentially rich assortment of lyotropic liquid crystals. |
| 收录类别 | SCI |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/36003]  |
| 专题 | 生态环境研究中心_环境纳米材料实验室 |
| 推荐引用方式 GB/T 7714 | Salamonczyk, Miroslaw,Zhang, Jing,Portale, Giuseppe,et al. Smectic phase in suspensions of gapped DNA duplexes[J]. NATURE COMMUNICATIONS,2016,7(0):-. |
| APA | Salamonczyk, Miroslaw.,Zhang, Jing.,Portale, Giuseppe.,Zhu, Chenhui.,Kentzinger, Emmanuel.,...&Stiakakis, Emmanuel.(2016).Smectic phase in suspensions of gapped DNA duplexes.NATURE COMMUNICATIONS,7(0),-. |
| MLA | Salamonczyk, Miroslaw,et al."Smectic phase in suspensions of gapped DNA duplexes".NATURE COMMUNICATIONS 7.0(2016):-. |
入库方式： OAI收割
来源：生态环境研究中心
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