Postdoctoral Researcher - Paris e, France - Université Paris Cité

Université Paris Cité
Université Paris Cité
Entreprise vérifiée
Paris e, France

il y a 2 semaines

Sophie Dupont

Posté par:

Sophie Dupont

beBee Recruiter
Description

New synthesis strategies for controlling and improving the understanding of the fluorescence properties of carbon dots


This project aims to acquire better knowledge on the physicochemical properties, and in particular optical properties, of CDs, by highlighting the relationships between structure and properties.

Does the size of CDs influence their fluorescence properties? What is the role of surface groups on the fluorescence of CDs? How does their fluorescence evolve in the presence of dopants like heteroatoms? Such fundamental studies on the fluorescence properties of CDs have indeed never been reported in the literature.


We will initially focus on developing new strategies for the synthesis of CDs, via a top-down approach, in particular by electrochemical method or by laser ablation (in collaboration with ENS Paris Saclay).

The parameters and precursors used during theses syntheses will be modulated in order to vary and control the CDs obtained, which will then be characterized by different techniques (TEM, XPS, Raman and IR spectroscopies ) and whose fluorescence properties will be studied.


In a second step, we will explore the possibility of modulating post-synthesis the fluorescence properties of these CDs, in particular by functionalizing them.

In particular, we will consider the influence of electron-withdrawing groups _vs._ electron donor groups, p-conjugated groups _vs._ saturated groupson their fluorescence properties.


Finally, their functionalization with materials presenting switchable physicochemical properties (conductive polymers, thermoresponsive polymers, photoisomerisable azobenzene derivatives ) could also be studied with the aim of reversibly modulating the CDs fluorescence under the action of an external stimulus.


Type d'emploi :
Temps plein, CDD
Durée du contrat : 18 mois

Salaire : 24 000,00€ à 36 000,00€ par an


Exigences linguistiques flexibles:

  • Français non requis

Programmation:

  • Travail en journée

Lieu du poste :
Un seul lieu de travail

Date de début prévue : 01/04/2023
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