Carborane compounds as efficient light-driven oxidation catalysts

 by Isabel Guerrero Troyano, from the Inorganic Materials and Catalysis (LMI) Group at ICMAB-CSIC

Date: Friday 11 March 2022
Time: 11:00 am
Venue: Universitat de Girona (Facultat de Ciències) at the Sala Lear

Abstract: Metallabis(dicarbollides), such as COSAN and their chlorinated derivatives or FESAN demonstrated to perform efficiently as photoredox catalysts in the oxidation of alcohols and alkenes in water, through single-electron transfer (SET) processes. This was possible thanks to their high water solubility, surfactant behavior and lack of luminescence upon excitation by light. Furthermore, COSAN has been suported on silica-coated amino funcionalized nanoparticles, through non-covalent interactions, (MSNPs-NH₂@H[1]), showing high water stability. The heterogeneous catalytic system was highly efficient for the photooxidation of alcohols and their recyclability was demonstrated through 12 runs, maintaining the activity of the catalyst. We have also synthesized the cooperative photoredox catalyst, [RuII(trpy)(bpy)(H₂O)][3,3’-Co(1,2-C₂B₉H₁₁)₂]2, and their efficiency in the oxidation of alcohols was demonstrated, operating through proton-coupled electron transfer (PCET) processes.

Supervisors:

• Francesc Teixidor i Bombardó, Institut de Ciència dels Materials de Barcelona (ICMAB-CSIC)
• M. Isabel Romero García, Universitat de Girona (UdG)

PhD Comitee:

• President: Rosario Núñez Aguilera, Institut de Ciència dels Materials de Barcelona (ICMAB-CSIC), Barcelona
• Secretary: Jordi Poater Teixidor, ICREA, Universitat de Barcelona (UB), Barcelona
• Vocal: Oscar Pamies Ollé, Universitat Rovira i Virgili, Tarragona

University: Universitat de Girona
PhD Programme: Chemistry

Metallabis(dicarbollides) as photoredox catalysts in water