Objective
The rational design and synthesis of pure hetero-polymetallic f-f complexes remains an unsolved chemical challenge, despite the numerous potential applications offered by their appealing electronic, photo-physical and magnetic properties for developing novel luminescent materials and sensors. The use of neutral N-donor ligands, which self-assemble into poly-lanthanide helicates on combination with appropriate Ln(III) salts, has shown substantial promise for selectively introducing different lanthanide ions into extended polymetallic arrays. However, the sequential binding of different Ln(III) ions during the self-assembly process is hindered by electrostatic repulsion between the highly charged Ln(III) centres and the overall process is thus limited by negative cooperativity. Furthermore, the thermodynamic stability of the resulting complexes are somewhat compromised by the labile nature of Ln(III) ions, and the complex formation is thus highly sensitive to external conditions such as effective concentration, solvent polarity, pH etc.
The proposed project will therefore address these issues by exploring the potential offered by negatively charged ligand strands for:
(i) isolating pure homo- and hetero-polymetallic helicates and
(ii) gaining further understanding of the fundamental factors which control the formation of and selectivity in such multi-component systems. For this purpose, a series of polydentate ligands containing both neutral and charged tridentate donor sites will be prepared.
Aside from reducing intermetallic repulsion in the final complex, the negatively charged ligands are also expected to:
(i) encourage positive cooperativity in sequential assembly steps,
(ii) thermo-dynamically stabilize the final supra molecular assembly and
(iii) increase the affinity of the charged binding sites for correspondingly smaller Ln(III) ions, thereby enhancing f-f ion recognition between different sites.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology electrical engineering, electronic engineering, information engineering electronic engineering sensors
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Keywords
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Project’s keywords as indicated by the project coordinator. Not to be confused with the EuroSciVoc taxonomy (Fields of science)
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
FP6-2005-MOBILITY-5
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Funding Scheme
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
GENEVA 4
Switzerland
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.