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DOI | 10.1126/science.aal1619 |
Braiding a molecular knot with eight crossings | |
Danon, Jonathan J.; Kruger, Anneke; Leigh, David A.; Lemonnier, Jean-Francois; Stephens, Alexander J.; Vitorica-Yrezabal, Inigo J.; Woltering, Steffen L. | |
2017-01-13 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2017 |
卷号 | 355期号:6321页码:159-+ |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Knots may ultimately prove just as versatile and useful at the nanoscale as at the macroscale. However, the lack of synthetic routes to all but the simplest molecular knots currently prevents systematic investigation of the influence of knotting at the molecular level. We found that it is possible to assemble four building blocks into three braided ligand strands. Octahedral iron(II) ions control the relative positions of the three strands at each crossing point in a circular triple helicate, while structural constraints on the ligands determine the braiding connections. This approach enables two-step assembly of a molecular 8(19) knot featuring eight nonalternating crossings in a 192-atom closed loop similar to 20 nanometers in length. The resolved metal-free 8(19) knot enantiomers have pronounced features in their circular dichroism spectra resulting solely from topological chirality. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000391743700037 |
WOS关键词 | TREFOIL KNOT ; TEMPLATE SYNTHESIS ; SOLOMON LINK ; ANION-BINDING ; TOPOLOGY ; CATALYSIS ; CRYSTAL ; DNA |
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/195212 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | Univ Manchester, Sch Chem, Manchester M13 9PL, Lancs, England |
推荐引用方式 GB/T 7714 | Danon, Jonathan J.,Kruger, Anneke,Leigh, David A.,et al. Braiding a molecular knot with eight crossings[J]. SCIENCE,2017,355(6321):159-+. |
APA | Danon, Jonathan J..,Kruger, Anneke.,Leigh, David A..,Lemonnier, Jean-Francois.,Stephens, Alexander J..,...&Woltering, Steffen L..(2017).Braiding a molecular knot with eight crossings.SCIENCE,355(6321),159-+. |
MLA | Danon, Jonathan J.,et al."Braiding a molecular knot with eight crossings".SCIENCE 355.6321(2017):159-+. |
条目包含的文件 | 条目无相关文件。 |
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