Objective
The synthesis and efficient purification of fluorescent proton transfer dyes covering the far red and near infrared spectral ranges have been carried out. 2 main compounds were synthesized. One of these shows a single emission band in the far red, while the other presents a dual fluorescence. This dual emission was ascribed to a rapid equilibration, in the excited state, between the species initially populated and the proton transfer tautomer. Efficient methods of synthesis of these compounds have been developed in the quantities needed for laser work.
The picosecond kinetics study of the intramolecular excited state proton transfer in liquid solutions of the compound exhibiting dual fluorescence has led to new dynamic information particularly on the reversible reaction. A reasonable fit of the data has been obtained if it is assumed that the reversible proton tranfer kinetics are nonmarkovian. The influence of the solvent physics has been examined for protic and aprotic solvents. The hydrogen bond of the solvent can compete with the intramolecular hydrogen bond of the solute, thereby strongly diminishing the proton transfer rate.
The demonstration of laser emission, based on the excited state proton transfer reaction, taking place within a solid host has been made and the energy conversion efficiency has been determined for various pumping wavelengths. Experimental investigations showed that the thermal and acoustic properties of the polymeric host are of key importance to maintain the lasing efficiency of the samples.
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.
- natural sciences physical sciences optics laser physics
- engineering and technology environmental engineering energy and fuels energy conversion
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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)
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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
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Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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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
67037 Strasbourg
France
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.