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Reference : UMR6200-VERVER-002
Workplace : ANGERS
Date of publication : Friday, June 4, 2021
Scientific Responsible name : Cément CABANETOS
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 October 2021
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly
Description of the thesis topic
Organic electronics, pipe-dream few decades ago, is now a reality with commercially available Organic light emitting diode based displays (TVs, smartphones), sensors, batteries or photovoltaics (OPVs). Hence, the advent of such research field has generated a craze in the scientific community leading to the synthesis and characterization of various classes of pi-conjugated molecular and macromolecular semiconductors. Among them, imide-containing rylenes have attracted considerable research attention due to their redox, electron-withdrawing and charge-carrier transport properties, as well as their excellent chemical, thermal, and photochemical stabilities.
Naphthalene diimide (NDI) and perylene diimide (PDI) can be unequivocally recognized as the most studied imide based building blocks for the preparation of high-performance electron transporting optoelectronic materials. Within these wide-ranging studies, considerable effort has been undertaken to functionalize both the bay positions and the nitrogen atom constituting the imide group (N-positions) to bring solubility, tune the molecular (opto)electronic characteristics, and build extended -conjugated architectures.A contrario, the N-(alkyl)benzothioxanthene-3,4-dicarboximide (BTXI), a sulfur containing rylene-imide dye, has not triggered such research interest. Among the very scarce publications, the later was exclusively dedicated to its remarkable fluorescent properties in biological and polymer staining applications. Moreover, from a chemical point of view, the BTXI was solely functionalized on the N-position for post-grafting purpose and/or to increase solubility resulting, once again due to a lack of interest, in limited range of characterizations and applications. In this context, and base on self-initiated fundamental work on the selective mono-bromination of the BTXI core, the aim of the BTXI-APOGEE project is to explore different synthetic methodologies to further functionalize the BTXI core, thus leading to the characterization of new and original molecular and macromolecular derivatives which will be finally embedded in specific devices namely OLEDs and organic solar cells.
Founded in 1988, MOLTECH-Anjou (CNRS - University of Angers) integrates more than 80 people (professors, assistant-professors, researchers, engineers, administrative staffs, post-doctoral fellows and PhD students) which are organized in five research teams of chemists and physicists.
A key characteristic of MOLTECH-Anjou lies on the convergence of the research topics, which are all focused on smart molecular materials and which are supported by expertises ranging from theoretical chemistry and molecular modeling, organic and inorganic syntheses, coordination chemistry, physical and analytical chemistry, material sciences,… to photonics. These skills are implemented into fields related to the optical and electronic properties of organic materials, with a special focus for addressable materials, molecular electronics and nanostructuration.
Constraints and risks
We seek for a motivated organic chemist who is looking for an international training. The recruited PhD student will indeed be involved in, and will contribute to, a multidisciplinary environment through an international collaborative network (Korea, Canada, USA), conductive to the development of his/her scientific skills (from organic chemistry to the device fabrication) and maturity.
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