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Design and Synthesis of Solvatochromic Dyes

Il y a 5 mois


Rouen, France Université de Rouen Normandie Temps plein

**design and synthesis of solvatochromic dyes**:

- Réf
- **ABG-113832**
- Sujet de Thèse- 26/04/2023- Contrat doctoral- Université de Rouen Normandie- Lieu de travail- Rouen - Normandie - France- Intitulé du sujet- design and synthesis of solvatochromic dyes- Champs scientifiques- Chimie
- Mots clés- fluorescence, organic synthesis, push-pull, ESIPT**Description du sujet**:

- Environment-sensitive fluorescent probes are specially designed dyes that change fluorescence intensity (fluorogenic dyes) or colour (e.g. solvatochromic dyes) in response to a change in polarity, viscosity and/or molecular order of their microenvironment. In general, they are ‘push-pull’ dyes that undergo intramolecular charge transfer (ICT) in the excited state. Intramolecular proton transfer in the excited state (ESIPT) is another fluorescence mechanism which results in long Stokes’ shifts and the possibility of dual emission, the ratios of which are sensitive to the local environment.- These two fluorescence mechanisms will be used to design solvatochromic dyes. The French team will study ICT dyes whereas Australian team will focus on ESIPT dyes. Particularly, the structure of the ESIPT dyes will be based on natural products isolated from sponges and modified by hemisynthesis or by
- _de-novo_ synthesis. Isolation and characterization of new natural fluorophores from collected sponges will also be done. In France, ICT dyes will be built by a new and efficient key reaction allowing an easy combination of electron-donor and acceptor moieties. Once the dyes build, complete photophysical characterization will be done and cell-imaging performed. DFT calculations will also help in designing new dyes**Prise de fonction**:

- 02/10/2023**Nature du financement**:

- Contrat doctoral**Précisions sur le financement**:
**Présentation établissement et labo d'accueil**:

- Université de Rouen Normandie-
- Development of new synthetic methodologies in the fields of heterocycles, heterochemistry and metal-mediated chemistry
- Exploitation of innovative technologies for synthesis (photocatalysis, flow-through chemistry, electrochemistry, radical chemistry, hyperbaric and microfluidic synthesis).
- Development of new tools in NMR, mass spectrometry and theoretical chemistry
- Identification of intermediates and elucidation of reaction mechanisms
- Development of new adaptable and flexible tools (synthetic and analytical tools) to study the mechanisms of life.

**Site web**:
**Intitulé du doctorat**:

- Doctorat de chimie organique**Pays d'obtention du doctorat**:

- France**Etablissement délivrant le doctorat**:

- UNIVERSITE DE ROUEN**Ecole doctorale**:

- École Doctorale normande de chimie (EDNC)**Thèse en cotutelle **:Oui
- **Pays d'obtention du doctorat en cotutelle**:

- Australie**Etablissement délivrant le doctorat en cotutelle**:

- Macquarie University- The PhD student will spend 18 months in France and 18 months in Australia. He(She) will be located at UMR 6014 COBRA in Rouen (France) and at Macquarie University in Sydney (Australia). Start either FR or AU.**Profile sought**: Master degree in Organic/Bioorganic Chemistry. A strong interest in organic chemistry and fluorescence is essential.- 15/06/2023