Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Liverpool scientists construct molecular `knots'

The molecular `knots' have dimensions of around two nanometers
The molecular `knots' have dimensions of around two nanometers

Abstract:
Scientists at the University of Liverpool have constructed molecular 'knots' with dimensions of around two nanometers (2 x 10-9 nm) - around 30,000 times smaller than the diameter of a human hair.

Liverpool scientists construct molecular `knots'

Liverpool, UK | Posted on July 20th, 2010

Most molecules are held together by chemical bonds between atoms - ‘nano-knots' are instead mechanically bonded by interpenetrating loops. Liverpool scientists have managed to create nanoscale knots in the laboratory by mixing together two simple starting materials - one a rigid aromatic compound and the other a more flexible amine linker.

This is an unusual example of ‘self-assembly', a process which underpins biology and allows complex structures to assemble from more simple building blocks. Each knot is ‘tied' three times: that is, at least three chemical bonds must be broken to untie the knot. A single knot is a complex assembly of 20 smaller molecules.

Professor Andrew Cooper, Director of the University's Centre for Materials Discovery, said: "I was amazed when we discovered these molecules; we actually set out to make something simpler. A complex structure arises out of quite basic building blocks.

"It is like shaking Scrabble tiles in a bag and pulling out a fully formed sentence. These are the surprises which make scientific research so fascinating."

The experimental work was led by Dr Tom Hasell, a Postdoctoral Researcher, who recognized that the data in an experiment to create organic nanocages was anomalous. In particular, the mass of the molecules was twice as high as expected, a result of the complex mechanical interlocking of two molecular sub-units. The team is now focusing on the practical application of these molecules and similar structures - for example, to build molecular ‘machines' which can trap harmful gases and pollutants such as carbon dioxide.

The research, which was published in the journal Nature Chemistry, forms part of a broader five-year programme focusing on the synthesis of new materials for applications such as energy storage and conversion. The project is funded by the Engineering and Physical Sciences Research Council (EPSRC).

####

For more information, please click here

Contacts:
Kate Spark
Head of Public Relations
Phone: work +44 (0) 151 794 2247
Out of hours (cell+44 (0) 7970 247391)


Samantha Martin
Senior Press Officer
Phone: work +44 (0) 151 794 2248
Out of hours (cell+44 (0) 7973 247836)


Sarah Stamper
Press and Marketing Officer
Phone: work +44 (0) 151 794 3044
Out of hours (cell+44 (0) 7970 247396)

Copyright © University of Liverpool

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Chemists strike nano-gold: 4 new atomic structures for gold nanoparticle clusters: Research builds upon work by Nobel Prize-winning team from Stanford University April 28th, 2015

Self-assembling biomaterial forms nanostructure templates for human tissue formation April 27th, 2015

International research team discovers new mechanism behind malaria progression: Findings provide a new avenue for research in malaria treatment April 27th, 2015

Sensor Designed in Iran Able to Remove Formaldehyde Gas from Environment April 27th, 2015

Govt.-Legislation/Regulation/Funding/Policy

Chemists strike nano-gold: 4 new atomic structures for gold nanoparticle clusters: Research builds upon work by Nobel Prize-winning team from Stanford University April 28th, 2015

International research team discovers new mechanism behind malaria progression: Findings provide a new avenue for research in malaria treatment April 27th, 2015

More is less in novel electronic material: Adding electrons actually shrinks the system April 27th, 2015

Two-dimensional semiconductor comes clean April 27th, 2015

Possible Futures

Printing Silicon on Paper, with Lasers April 21st, 2015

A glass fiber that brings light to a standstill: By coupling photons to atoms, light in a glass fiber can be slowed down to the speed of an express train; for a short while it can even be brought to a complete stop April 9th, 2015

Nanotechnology in Medical Devices Market is expected to reach $8.5 Billion by 2019 March 25th, 2015

Nanotechnology Enabled Drug Delivery to Influence Future Diagnosis and Treatments of Diseases March 21st, 2015

Academic/Education

SEFCU, SUNY Poly CNSE Announce Winning Student-Led Teams in the 6th Annual $500,000 New York Business Plan Competition April 25th, 2015

Iranian Female Professor Awarded UNESCO Medal in Nanoscience April 20th, 2015

JPK reports on the use of the NanoWizard® 3 AFM system at the Hebrew University of Jerusalem April 14th, 2015

UK National Graphene Institute Selects Bruker as Official Partner: World-Leading Graphene Research Facility Purchases Multiple Bruker AFMs April 7th, 2015

Molecular Machines

UCLA nanoscientists are first to model atomic structures of three bacterial nanomachines: Cryo electron microscope enables scientists to explore the frontiers of targeted antibiotics April 21st, 2015

Advances in molecular electronics: Lights on -- molecule on: Researchers from Dresden and Konstanz succeed in light-controlled molecule switching April 20th, 2015

Designer's toolkit for dynamic DNA nanomachines: Arm-waving nanorobot signals new flexibility in DNA origami March 27th, 2015

Tiny bio-robot is a germ suited-up with graphene quantum dots March 24th, 2015

Self Assembly

Scientists Use Nanoscale Building Blocks and DNA 'Glue' to Shape 3D Superlattices: New approach to designing ordered composite materials for possible energy applications April 23rd, 2015

Advances in molecular electronics: Lights on -- molecule on: Researchers from Dresden and Konstanz succeed in light-controlled molecule switching April 20th, 2015

Carnegie Mellon chemists create tiny gold nanoparticles that reflect nature's patterns April 9th, 2015

DWI scientists program the lifetime of self-assembled nanostructures April 9th, 2015

Announcements

Chemists strike nano-gold: 4 new atomic structures for gold nanoparticle clusters: Research builds upon work by Nobel Prize-winning team from Stanford University April 28th, 2015

The 16th Trends in Nanotechnology International Conference (TNT 2015) unveils 25 Keynote Speakers: Call for abstracts open April 27th, 2015

Graphenea celebrates fifth anniversary April 27th, 2015

Sensor Designed in Iran Able to Remove Formaldehyde Gas from Environment April 27th, 2015

Environment

Chemists strike nano-gold: 4 new atomic structures for gold nanoparticle clusters: Research builds upon work by Nobel Prize-winning team from Stanford University April 28th, 2015

Nanoparticles Used to Improve Mechanical, Thermal Properties of Cellulose Fibers April 23rd, 2015

Young NTU Singapore spin-off clinches S$4.3 million joint venture with Chinese commercial giant March 23rd, 2015

New processing technology converts packing peanuts to battery components March 22nd, 2015

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project