High quality one atom thick boron acid molecules network with great stability

High quality one atom thick boron acid molecules network with great stability

10:41 PM, 1st January 2012
High quality one atom thick boron acid molecules network with great stability
Scanning electron microscopy image with a superimposed molecular model.

 

 

MUNICH, GERMANY: Stable two-dimensional networks of organic molecules are important components in various nanotechnology processes. However, producing these networks, which is only one atom thick, in high quality and with the greatest possible stability still poses a great challenge. Scientists from the Excellence Cluster Nanosystems Initiative Munich (NIM) have now successfully created just such networks made of boron acid molecules. The scientific journal ACSnano reported on their results.

A team of physicists headed by Dr Markus Lackinger, Technische Universitat Munchen (TUM) and Thomas Bein, Professor, Ludwig-Maximilians-Universitat Munchen (LMU) has now developed a process by which they can build up high-quality polymer networks using boron acid components.

Physicists are working on ordered two-dimensional structures created by self-organized boron acid molecules on a graphite surface at Deutsches Museum, Munchen. By eliminating water, the molecules bond together in a one-atom thick network held together solely by chemical bonds, this makes the network very stable. The regular honey-comb-like arrangement of the molecules results in a nano-structured surface whose pores can be used, for instance, as stable forms for the production of metal nano-particles.

The molecular carpets also come in nearly perfect models; unfortunately these are not very stable. In these models the bonds between the molecules are very weak, for instance hydrogen bridge bonds or van der Waals forces. The advantage of this variant is that faults in the regular structure are repaired during the self-organization process; bad bonds are dissolved so that proper bonds can form.

However, many applications call for molecular networks that are mechanically, thermally and chemically stable. Linking the molecules by means of strong chemical bonds can create such durable molecule carpets. The down side is that the unavoidable weaving mistakes can no longer be corrected due to the great bonding strength.

Markus Lackinger and his colleagues have now found a way to create a molecular carpet with stable covalent bonds without significant mistakes. The method is based on a bonding reaction that creates a molecular carpet out of individual boron acid molecules. It is a condensation reaction in which water molecules are released. If bonding takes place at temperatures of a little over 100°C with only a small amount of water present, mistakes can be corrected during weaving. The result is molecules in a stable and well-ordered one-layer structure.

© Technische Universitaet Muenchen News  

 

 

0 Comments

Login

Your Comments (Up to 2000 characters)
Please respect our community and the integrity of its participants. WOC reserves the right to moderate and approve your comment.

Related News


PhosAgro announces apatit capital expenditure budget

MOSCOW, RUSSIA: PhosAgro has planned RUB 6,990 million, capital expenditure budget for apatit. The programme is expected to result in higher product ...

Read more
Saudi Kayan awards logistics contract to Alfred Talke

JUBAIL, SAUDI ARABIA: Saudi Kayan, a joint venture between SABIC and Al-Kayan Petrochemical, has awarded a site logistics contract for its new ethan ...

Read more
FLSmidth awarded copper concentrator order in Mongolia

VALBY, DENMARK: FLSmidth has been awarded a contract worth approximately $105 million from the Mongolian company, Mongolyn Alt (MAK) Group, to suppl ...

Read more
Study of protein folds

  PHILADELPHIA, US: A protein’s function depends on the chains of molecules it is made of and the way those chains are folded. While figur ...

Read more
ICL reaches agreement with the Israel Government over Dead sea salt harvesting project

JERUSALEM, ISRAEL: Israel Chemicals Ltd (ICL) has approved a framework agreement with ministry of finance, Israel government regarding ICL’s p ...

Read more
IFF and Mane settles patent claims over monomenthyl succinate

TRENTON, US: International Flavors & Fragrances Inc (IFF) has settled all patent and non-patent claims brought by V Mane Fils in the US district ...

Read more
www.worldofchemicals.com uses cookies to ensure that we give you the best experience on our website. By using this site, you agree to our Privacy Policy and our Terms of Use. X