Molecular knot

Molecular knot
Crystal structure of a molecular trefoil knot with two copper(I) templating ions bound within it reported by Sauvage and coworkers in Recl. Trav. Chim. Pay. B., 1993, 427-428.
Crystal structure of a molecular trefoil knot reported by Vögtle and coworkers in the Angew. Chem. Int. Edit., 2000, 1616-1618.

In chemistry, a molecular knot, or knotane, is a mechanically-interlocked molecular architecture that is analogous to a macroscopic knot. A molecular knot in a trefoil knot configuration is chiral, having at least two enantiomers. Examples of naturally formed knotanes are DNA and certain proteins. Lactoferrin has an unusual biochemical reactivity compared to its linear analogue. Other synthetic molecular knots have a distinct globular shape and nanometer sized dimensions that make them potential building blocks in nanotechnology. The term "knotanes" was coined by Fritz Vögtle et al. in Angewandte Chemie International Edition in 2000 by analogy with rotaxane and catenane.[1][2] The term however has yet to be adopted by IUPAC.

See also

References


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Knot theory — A three dimensional depiction of a thickened trefoil knot, the simplest non trivial knot …   Wikipedia

  • Mechanically-interlocked molecular architectures — are connections of molecules not through traditional bonds, but instead as a consequence of their topology. This connection of molecules is analogous to keys on a key chain loop. The keys are not directly connected to the key chain loop but they… …   Wikipedia

  • Solomon's knot — Not to be confused with Sigillum Solomonis, a name for the Polygonatum genus. Basic Solomon s knot …   Wikipedia

  • Ultra-high-molecular-weight polyethylene — (UHMWPE or sometimes shortened to UHMW), also known as high modulus polyethylene (HMPE) or high performance polyethylene (HPPE), is a subset of the thermoplastic polyethylene. It has extremely long chains, with molecular weight numbering in the… …   Wikipedia

  • Ultra high molecular weight polyethylene — (UHMWPE), also known as high modulus polyethylene (HMPE) or high performance polyethylene (HPPE), is a subset of the thermoplastic polyethylene. It has extremely long chains, with molecular weight numbering in the millions, usually between 2 and… …   Wikipedia

  • Enamel knot — In tooth development, the enamel knot is a localization of cells on an enamel organ that appear thickened in the center of the inner enamel epithelium. The enamel knot is frequently associated with an enamel cord. The enamel knot as signaling… …   Wikipedia

  • David Leigh (scientist) — For the British journalist, see David Leigh. David Alan Leigh FRS is the Forbes Professor of Organic Chemistry at the University of Edinburgh. He is noted for the development of new methods to construct rotaxanes, catenanes and molecular knots… …   Wikipedia

  • Macrocycle — A macrocycle is, as defined by IUPAC, a cyclic macromolecule or a macromolecular cyclic portion of a molecule. ref|iupac 01 In the chemical literature, organic chemists may consider any molecule containing a ring of more than nine, or any… …   Wikipedia

  • Möbius strip — This article is about the mathematical object. For musical group, see Mobius Band (band). A Möbius strip made with a piece of paper and tape. If an ant were to crawl along the length of this strip, it would return to its starting point having… …   Wikipedia

  • Supramolecular chemistry — refers to the area of chemistry that focuses on the noncovalent bonding interactions of molecules. [cite journal | author=Lehn JM | title=Supramolecular chemistry | journal=Science | volume=260 | issue=5115 | year=1993 | pages=1762–3 |… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”