Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

New reaction for the synthesis of nanostructures

21.07.2016

The collaboration between the research groups of professors Pau Ballester and José R. Galan-Mascaros at the Institute of Chemical Research of Catalonia (ICIQ), Dr. Jonas Björk at Linköping University and the group of Dr. David Ecija at Institute IMDEA Nanoscience has allowed the development of a new chemical reaction for the synthesis of low-dimensional polymers that can be rationalised as phthalocyanine derivatives. The results obtained have been published in Nature Communications.

Surface-mediated synthesis of low-dimensional polymers from simple molecular precursors is a rapidly emerging field. In this work, the researchers introduce surface-confined thermally tunable reaction pathways as a route to select intramolecular versus intermolecular reactions yielding either monomeric phthalocyanines or low-dimensional phthalocyanine polymers, respectively.


a) STM image displaying the formation of quasi-unidimensional polymers. b) STM image and models of the majority of products between coupled monomers.

Credit: Dr. David Ecija, IMDEA Nanoscience

The precursor was designed and synthesised at ICIQ's laboratories. Next at IMDEA Nanoscience, it was deposited on a gold surface where it has been gently annealed to more than 300ºC in order to study its behaviour. When the temperature rises up to 275ºC, the polymerisation of the molecule occurs resulting in phthalocyanine unidimensional polymers (phthalocyanine tapes) that had not been synthesised so far.

However, if the molecules are deposited on a substrate held at 300ºC, the polymeric growth is blocked and the precursor is transformed into individual phthalocyanines. This selectivity induced by temperature, despite being a promising strategy for increasing the synthetic versatility, had not been used on surfaces up to now. Nevertheless, this use could have huge advantages when engineering nanostructures with technological applications.

"On-surface synthesis is a promising strategy for the formation of nanostructures. This new thermally controlled reaction presents a very interesting alternative for the development of new polymeric materials, which will satisfy the growing demand from disciplines such as nanotechnology, information technology and biotechnology" -say Prof. Galan-Mascaros and Dr. David Ecija.

###

Corresponding authors:

Pablo Ballester: pballester@iciq.es

José R. Galan-Mascaros: jrgalan@iciq.es

David Ecija: david.ecija@imdea.org

Ref:

Thermal selectivity of intermolecular versus intramolecular reactions on surfaces

B. Cirera, N. Giménez-Agulló, J. Björk, F. Martínez-Peña, A. Martin-jimenez, J. Rodríguez-Fernandez, A. M. Pizarro, R. Otero, J.M. Gallego, P. Ballester, J. R. Galan-Mascaros, D. Ecija Nature Communications, 2016, 7, 11002

About the Institute of Chemical Research of Catalonia:

The ICIQ is a member of the Barcelona Institute of Science and Technology and a leading international centre of chemical research. The institute has 19 research groups that work in the areas of catalysis (discovery and improvement of more sustainable chemical production processes and drug development) and renewable energies (generation of hydrogen from water, photovoltaic molecular, conversion of CO2 into materials and fuels of industrial interest). The ICIQ is a Centro de Excelencia Severo Ochoa, has received 14 grants from the European Research Council (ERC) and 9 of its researchers are ICREA professors.

About IMDEA Nanoscience:

IMDEA-Nanociencia is a private non profit Foundation created by initiative of the the regional Government of the Community of Madrid in November 2006 in order to shorten the distance between the research and society in the Madrid region and provide new capacity for research, technological development and innovation in the field of Nanoscience, Nanotechnology and Molecular Design. The Foundation manages the IMDEA-Nanociencia Institute, a new interdisciplinary research centre dedicated to the exploration of basic nanoscience and the development of applications of nanotechnology in connection with innovative industries.The IMDEA-Nanociencia Institute is part of one of the strategic lines of the Campus of International Excellence (CEI) UAM+CSIC.

Media Contact

Rosario Martinez
rmartinez@iciq.es
34-977-920-200-370

 @ICIQchem

http://www.iciq.es/ 

Rosario Martinez | EurekAlert!

More articles from Materials Sciences:

nachricht Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern
20.07.2018 | Princeton University

nachricht Relax, just break it
20.07.2018 | DOE/Argonne National Laboratory

All articles from Materials Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes

20.07.2018 | Power and Electrical Engineering

Reversing cause and effect is no trouble for quantum computers

20.07.2018 | Information Technology

Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern

20.07.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>