Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41467-017-01043-z |
Double helical conformation and extreme rigidity in a rodlike polyelectrolyte | |
Wang, Ying1,2; He, Yadong3; Yu, Zhou3; Gao, Jianwei4; ten Brinck, Stephanie5; Slebodnick, Carla1,2; Fahs, Gregory B.1,2; Zanelotti, Curt J.1,2; Hegde, Maruti4,6; Moore, Robert B.1,2; Ensing, Bernd5; Dingemans, Theo J.4,6; Qiao, Rui3; Madsen, Louis A.1,2 | |
2019-02-18 | |
发表期刊 | NATURE COMMUNICATIONS
![]() |
ISSN | 2041-1723 |
出版年 | 2019 |
卷号 | 10 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Netherlands |
英文摘要 | The ubiquitous biomacromolecule DNA has an axial rigidity persistence length of similar to 50 nm, driven by its elegant double helical structure. While double and multiple helix structures appear widely in nature, only rarely are these found in synthetic non-chiral macromolecules. Here we report a double helical conformation in the densely charged aromatic polyamide poly (2,2'-disulfonyl-4,4'-benzidine terephthalamide) or PBDT. This double helix macromolecule represents one of the most rigid simple molecular structures known, exhibiting an extremely high axial persistence length (similar to 1 micrometer). We present X-ray diffraction, NMR spectroscopy, and molecular dynamics (MD) simulations that reveal and confirm the double helical conformation. The discovery of this extreme rigidity in combination with high charge density gives insight into the self-assembly of molecular ionic composites with high mechanical modulus (similar to 1 GPa) yet with liquid-like ion motions inside, and provides fodder for formation of other 1D-reinforced composites. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000458864600004 |
WOS关键词 | CONCENTRATED DNA SOLUTIONS ; MOLECULAR-DYNAMICS ; AROMATIC OLIGOAMIDES ; POLYMERS ; FOLDAMERS ; TRANSPORT ; ALIGNMENT ; ACID ; TEMPERATURE ; DIFFRACTION |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/203497 |
专题 | 资源环境科学 |
作者单位 | 1.Virginia Tech, Dept Chem, Blacksburg, VA 24061 USA; 2.Virginia Tech, Macromol Innovat Inst, Blacksburg, VA 24061 USA; 3.Virginia Tech, Dept Mech Engn, Blacksburg, VA 24061 USA; 4.Delft Univ Technol, Dept Aerosp Engn, Kluyverweg 1, NL-2629 HS Delft, Netherlands; 5.Univ Amsterdam, Vant Hoff Inst Mol Sci, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands; 6.Univ N Carolina, Dept Appl Phys Sci, 121 South Rd, Chapel Hill, NC 27599 USA |
推荐引用方式 GB/T 7714 | Wang, Ying,He, Yadong,Yu, Zhou,et al. Double helical conformation and extreme rigidity in a rodlike polyelectrolyte[J]. NATURE COMMUNICATIONS,2019,10. |
APA | Wang, Ying.,He, Yadong.,Yu, Zhou.,Gao, Jianwei.,ten Brinck, Stephanie.,...&Madsen, Louis A..(2019).Double helical conformation and extreme rigidity in a rodlike polyelectrolyte.NATURE COMMUNICATIONS,10. |
MLA | Wang, Ying,et al."Double helical conformation and extreme rigidity in a rodlike polyelectrolyte".NATURE COMMUNICATIONS 10(2019). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论