Nanotechnology Now

Our NanoNews Digest Sponsors

Heifer International

Wikipedia Affiliate Button

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

Ag/ZnO-Nanorods Schottky diodes based UV-PDs are fabricated and tested May 26th, 2017

New metamaterial-enhanced MRI technique tested on humans May 26th, 2017

Controlling 3-D behavior of biological cells using laser holographic techniques May 26th, 2017

Unveiling the quantum necklace: Researchers simulate quantum necklace-like structures in superfluids May 26th, 2017

Govt.-Legislation/Regulation/Funding/Policy

New metamaterial-enhanced MRI technique tested on humans May 26th, 2017

Controlling 3-D behavior of biological cells using laser holographic techniques May 26th, 2017

Unveiling the quantum necklace: Researchers simulate quantum necklace-like structures in superfluids May 26th, 2017

Researchers find new way to control light with electric fields May 25th, 2017

Possible Futures

Ag/ZnO-Nanorods Schottky diodes based UV-PDs are fabricated and tested May 26th, 2017

New metamaterial-enhanced MRI technique tested on humans May 26th, 2017

Controlling 3-D behavior of biological cells using laser holographic techniques May 26th, 2017

Unveiling the quantum necklace: Researchers simulate quantum necklace-like structures in superfluids May 26th, 2017

Academic/Education

MIT Energy Initiative awards 10 seed fund grants for early-stage energy research May 4th, 2017

Bar-Ilan University to set up quantum research center May 1st, 2017

California Research Alliance by BASF establishes more than 25 research projects in three years April 26th, 2017

SUNY Polytechnic Institute Announces Total of 172 Teams Selected to Compete in Solar in Your Community Challenge: Teams from 40 states, plus Washington, DC, 2 Territories, and 4 American Indian Reservations, Will Deploy Solar in Underserved Communities April 20th, 2017

Molecular Machines

First 3-D observation of nanomachines working inside cells: Researchers headed by IRB Barcelona combine genetic engineering, super-resolution microscopy and biocomputation to allow them to see in 3-D the protein machinery inside living cells January 27th, 2017

Micro-bubbles make big impact: Research team develops new ultrasound-powered actuator to develop micro robot November 25th, 2016

Scientists come up with light-driven motors to power nanorobots of the future: Researchers from Russia and Ukraine propose a nanosized motor controlled by a laser with potential applications across the natural sciences and medicine November 11th, 2016

HKU chemists develop world's first light-seeking synthetic Nanorobot November 9th, 2016

Self Assembly

Oddball enzyme provides easy path to synthetic biomaterials May 17th, 2017

Nanotubes that build themselves April 14th, 2017

Nanocages for gold particles: what is happening inside? March 16th, 2017

Most Complex Nanoparticle Crystal Ever Made by Design: Possible applications include controlling light, capturing pollutants, delivering therapeutics March 2nd, 2017

Announcements

Ag/ZnO-Nanorods Schottky diodes based UV-PDs are fabricated and tested May 26th, 2017

New metamaterial-enhanced MRI technique tested on humans May 26th, 2017

Controlling 3-D behavior of biological cells using laser holographic techniques May 26th, 2017

Unveiling the quantum necklace: Researchers simulate quantum necklace-like structures in superfluids May 26th, 2017

Environment

Can crab shells provide a 'green' solution to malaria? Study shows how a mixture of chitin and silver nanoparticles inhibits growth of mosquito larvae May 12th, 2017

NanoMONITOR shares its latest developments concerning the NanoMONITOR Software and the Monitoring stations April 21st, 2017

Wood filter removes toxic dye from water April 21st, 2017

Making Batteries From Waste Glass Bottles: UCR researchers are turning glass bottles into high performance lithium-ion batteries for electric vehicles and personal electronics April 19th, 2017

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