Title: Self-assembly of functionalized inorganic-organic liquid crystalline hybrids for multifunctional nanomaterials’ -supported by the Polish Foundation of Science
Required Qualification:
- PhD degree (organic chemistry, physical chemistry, physics) obtained not earlier than 4 years ago
- 2 articles in journals from ‘Philadelphia List’
- good command of English
- 1 year (with possibility for extension up to 3 years)
- monthly income of 5000 PLN (non-taxed
- MSc in the field of chemistry, physics or related subject candidate should be either already enrolled to PhD program or being able to fulfill all formal requirements required in order to be enrolled to PhD program (at Warsaw University or other scientific institution).
- good command of English
- up to 3 years
- monthly income of 3500 PLN (nontaxed)
Undergraduate position: completed 3rd year of studies at the faculty of Chemistry or Physics
- 1 year
- monthly income of 1000 PLN (nontaxed)
Concept and objectives
Main topic: Synthesis and characterization of new hybrid materials made from inorganic nanoparticles grafted with polyfunctional organic compounds, able to self-assemble into liquid crystalline structures.
Objective: Prepare self-organized multi-functional hybrid materials with programmed optical, dielectric, magnetic or multiferroic properties. 3D-metamaterials constitute our ultimate goal and will receive as such a special interest.
Impact: Development of scalable process for the preparation of new hybrid materials with potential applications in optics, electronics and magnetism.
The aim of this project is to develop novel approaches for the fabrication of self-organized materials for future photonic technologies. In particular, we are aiming to synthesize of inorganic/organic building blocks able to self-assemble into liquid crystalline (LC) structures and to investigate their photonic and electromagnetic properties for possible manipulation of optical fields. Nanosystems will be synthesized by grafting various inorganic nanoparticles, made of metals and metal oxides, with mesogenic molecules. These nano-objects will possess built-in multi-functionality, owing to the organic layer and inorganic core: for example, grafting luminescent or dipole ordered organic layer on metal particles should yield photo active, polar or conducting particle systems, with long range auto-organization. Moreover, the upper-level organization and/or the concomitant use of another complementary building block will favor the emergence of new properties or the enhancement of the existing ones because of collective or synergetic effects. This strategy – bottom-up self-organization of nanoparticles – will benefit from the self-assembling nature inherent to mesogens. It should therefore prove much easier and less expensive than currently, broadly exploited top-down lithographic methods. A careful and interdisciplinary design of nano-components will therefore cause spontaneous, yet anticipated build-up of structurally organized and functionally unique supramolecular system.
Our end-of-project goals are three, much desired material properties for future technology: multiferroics, metamaterials, magnetically tunable photonic crystals. Multiferroics are single phase materials, which simultaneously possess ferromagnetic and ferroelectric properties. Coupling between these two order parameters allows for controling one by another, which is particullarly promissing for spinotronic devices. The term metamaterials is used for ‘artificial’ materials with negative refractive index. The unprecedented interest in that type of systems comes from their unlimitted optical applications. Such materials permit fabricating 'superlenses' with spacial resolution below the diffraction limit or even generating the objects 'invisibility'. Photonic crystals are periodic structures, for which optical electromagnetic waves can exhibit forbidden energy bands. Such materials, particularly if the photonic crystal periodicity is controlled by external fields, could be used in number of optical applications, e.g. low-loss-waveguiding and mirrorless cavities. It should be stressed that the advantage of the ‘liquid crystals approach’ which we propose in this project is unique as it allows for obtaining these very different ultimate properties for similar NPs structures by fine tuning of NPs chemical composition.
Objective: Prepare self-organized multi-functional hybrid materials with programmed optical, dielectric, magnetic or multiferroic properties. 3D-metamaterials constitute our ultimate goal and will receive as such a special interest.
Impact: Development of scalable process for the preparation of new hybrid materials with potential applications in optics, electronics and magnetism.
The aim of this project is to develop novel approaches for the fabrication of self-organized materials for future photonic technologies. In particular, we are aiming to synthesize of inorganic/organic building blocks able to self-assemble into liquid crystalline (LC) structures and to investigate their photonic and electromagnetic properties for possible manipulation of optical fields. Nanosystems will be synthesized by grafting various inorganic nanoparticles, made of metals and metal oxides, with mesogenic molecules. These nano-objects will possess built-in multi-functionality, owing to the organic layer and inorganic core: for example, grafting luminescent or dipole ordered organic layer on metal particles should yield photo active, polar or conducting particle systems, with long range auto-organization. Moreover, the upper-level organization and/or the concomitant use of another complementary building block will favor the emergence of new properties or the enhancement of the existing ones because of collective or synergetic effects. This strategy – bottom-up self-organization of nanoparticles – will benefit from the self-assembling nature inherent to mesogens. It should therefore prove much easier and less expensive than currently, broadly exploited top-down lithographic methods. A careful and interdisciplinary design of nano-components will therefore cause spontaneous, yet anticipated build-up of structurally organized and functionally unique supramolecular system.
Our end-of-project goals are three, much desired material properties for future technology: multiferroics, metamaterials, magnetically tunable photonic crystals. Multiferroics are single phase materials, which simultaneously possess ferromagnetic and ferroelectric properties. Coupling between these two order parameters allows for controling one by another, which is particullarly promissing for spinotronic devices. The term metamaterials is used for ‘artificial’ materials with negative refractive index. The unprecedented interest in that type of systems comes from their unlimitted optical applications. Such materials permit fabricating 'superlenses' with spacial resolution below the diffraction limit or even generating the objects 'invisibility'. Photonic crystals are periodic structures, for which optical electromagnetic waves can exhibit forbidden energy bands. Such materials, particularly if the photonic crystal periodicity is controlled by external fields, could be used in number of optical applications, e.g. low-loss-waveguiding and mirrorless cavities. It should be stressed that the advantage of the ‘liquid crystals approach’ which we propose in this project is unique as it allows for obtaining these very different ultimate properties for similar NPs structures by fine tuning of NPs chemical composition.
Closing Date: 15 October 2010
Project duration: Nov 1, 2010 – Spt 30, 2013
Discipline: chemistry and physics of hybrid materials
Head of the TEAM: dr. hab. Ewa Górecka, prof. UW
Location: Department of Chemistry, University of Warsaw
We are seeking for 2 Post-Docs, 5 PhD students and 1 MSc student
Candidate should send application documents by 15th Oct 2010 to gorecka@chem.uw.edu.pl
For more information:
http://www.chem.uw.edu.pl/labs/pfdm/team.html
Discipline: chemistry and physics of hybrid materials
Head of the TEAM: dr. hab. Ewa Górecka, prof. UW
Location: Department of Chemistry, University of Warsaw
We are seeking for 2 Post-Docs, 5 PhD students and 1 MSc student
Candidate should send application documents by 15th Oct 2010 to gorecka@chem.uw.edu.pl
For more information:
http://www.chem.uw.edu.pl/labs/pfdm/team.html
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