Nanotechnology Now

Our NanoNews Digest Sponsors







Heifer International

Wikipedia Affiliate Button


Home > Press > Synthesis with a template: Carbon-free fullerene analogue

Abstract:
The discovery of a soccer-ball-shaped molecule made of 60 carbon atoms was a minor revolution in chemistry: Fullerenes are spherical, highly symmetrical molecules made of carbon atoms, and are the third form of carbon after diamond and graphite. However, the C60 "soccer ball" is not the only fullerene by far. Among its less stable relations is the C80 fullerene. There are seven different possible structural forms that have 80 carbon atoms in a symmetrical, spherical arrangement. Among the forms that are so instable they have not previously been produced is the icosahedral version (icosahedron= twenty-sided figure). Instead, a team led by Manfred Scheer at the University of Regensburg has now synthesized the first example of an inorganic, carbon-free C80 analogue. As they report in the journal Angewandte Chemie, their fullerene-type system of building blocks can be produced by using a template (template-controlled aggregation).

Synthesis with a template: Carbon-free fullerene analogue

Germany | Posted on May 1st, 2009

The researchers used pentaphosphaferrocene (a five-membered ring made of phosphorus atoms bound to an iron atom) and copper chloride for their synthesis. Their template was a carborane—a compound made of carbon, boron, and hydrogen atoms—of the appropriate size (ca. 0.8 nm) and shape (pseudo five-fold symmetry). The individual building blocks aggregate around the carborane to form a spherical supermolecule with fullerene-type geometry, enclosing the carborane within the structure as a "guest molecule". This gave the scientists a structure that corresponds to an icosahedral fullerene made of 80 carbon atoms. This scaffold is made of twenty copper and sixty phosphorus atoms that are arranged into twelve rings containing five phosphorus atoms each and 30 six-membered rings containing two copper and four phosphorus atoms. This inorganic shell interacts electronically with the enclosed guest molecule.

"Template-controlled aggregation has been shown to be an efficient route to large, entirely spherical molecules of fullerene-type topology," says Scheer. "The guest molecule determines the size and composition of the fullerene-type product."

Author: Manfred Scheer, Universität Regensburg (Germany), www.chemie.uni-regensburg.de/Anorganische_Chemie/Scheer/scheer.html
Title: A Carbon-Free Icosahedral Molecule with C80 Topology
Angewandte Chemie International Edition, doi: 10.1002/anie.200900342

Copy free of charge. We would appreciate a transcript of your article or a reference to it.

####

For more information, please click here

Contacts:
Manfred Scheer

49-941-943-4441

Copyright © Wiley-Blackwell

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

Conference Scheduled June 5-7 on Safe Use of Nanotechnology in Environmental Remediation May 23rd, 2013

Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013

Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013

Glowing Plant Releases Maker Kit, Enabling Anyone to Make a Glowing Plant at Home: Glowing Plant seeks funds via crowdfunding and raises almost $400,000 May 23rd, 2013

Chemistry

Study Led by George Washington University Professor Provides Better Understanding of Water’s Freezing Behavior at Nanoscale May 21st, 2013

Penn engineers' nanoantennas improve infrared sensing May 20th, 2013

Iranian Scientists Use Pomegranate Juice to Produce Copper Iodide Nanostructure May 14th, 2013

Chemistry breakthrough sheds new light on illness and health May 12th, 2013

Discoveries

Gold nanocrystal vibration captured on billion-frames-per-second film May 23rd, 2013

Whirlpools on the Nanoscale Could Multiply Magnetic Memory: At the Advanced Light Source, Berkeley Lab scientists join an international team to control spin orientation in magnetic nanodisks May 22nd, 2013

Bacterial spare parts filter antibiotic residue from groundwater May 22nd, 2013

UofL scientists uncover how grapefruits provide a secret weapon in medical drug delivery May 22nd, 2013

Appointments/Promotions/New hires/Resignations/Deaths

Heinrich Rohrer dies at 79; a father of nanotechnology: With IBM colleague Gerd Binnig, Rohrer invented the scanning tunneling microscope, which can show individual atoms on a surface and move them around May 23rd, 2013

Solid-State Lighting Expert Dr. Bernhard Stapp Named To Board of Pioneering LED Technology Developer Aledia: Former OSRAM General Manager and CTO Has Played Key Role In Industry’s Evolution, Will Aid Aledia’s Move Towards Industrialization May 22nd, 2013

Applied Nanotech Seeks New Chief Executive Officer: New Leader Needed for Next Phase of Growth May 10th, 2013

Cambrios Taps Sriram Peruvemba to Oversee Worldwide Marketing May 8th, 2013

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








abbigliamento uomo
Computer Accessories
© Copyright 1999-2013 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE