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Séminaire Chimie ED459 / Chaire Total

Small molecule organic semiconductors : from dye-sensitized solar cells to molecular photocatalysis

Dr. Kai Zhang (Max Planck Institute for Polymer Research, Mainz, Germany)

publié le

Le Jeudi 17 décembre 2015 à 13h45
UM FdS, Salle de Cours SC-16.01

Organic semiconductors have gained tremendous attention in applications such as organic light emitting diodes (OLEDs), organic solar cells (OSCs) and organic thin film transistors (OTFTs) because of their unique optical and electronic properties originated from the π-conjugated structure. Among these, organic solar cells, which can directly harvest energy from sunlight, are regarded as a promising means to meet the increasing demand for clean and renewable energies. It is commonly believed that a consequence of photoexitation, exition diffusion then exciton dissociation is involved to transform the light into electricity, namely, a photo-induced free electron/hole formation process.

Here, the study of a novel application field of small molecule organic semiconductors in the field of molecular photocatalysis is introduced. Taking advantage of the light-induced electron/hole generation, both active sides of the organic semiconductors have been studied in specific C–C formation reactions promoted under visible light irradiation. Detailed mechanism study will be shown for the unique design principle for this new class of material in the field of molecular catalysis in organic chemistry.

Contact local ICGM : Dr. Nicolas Brun (équipes CMOS / MACS)


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