Photo-switchable phosphines for in situ modification of catalysts
Recruting institution: ULEI
Diploma-delivering institutions: ULEI, UAB
Thesis co-directors: Evamarie Hey-Hawkins (ULEI , Leipzig, DE), Rosa Maria Sebastián (UAB, Barcelona, ES)
Secondment host: Elkem Silicones France (FR)
Academic secondment : UAB (Barcelona, ES)
To synthesize light-responsive phosphine ligands containing photoisomerizable dithienylethene, azobenzene or stilbene groups , remotely placed from the catalytic center. The photoinduced severe geometric and/or electronic changes will affect the coordinating ability and/or electronic communication with metals , thus resulting in light-controlled modification of the catalytic activity [1,2]. The effect will be rationalized using theoretical calculations (collaboration with Agustí Lledós, UAB), which will facilitate further rational design of improved light-responsive catalysts.
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Development of optimized new families of phosphine ligands with different coordinating behavior and/or electronic communication upon photoisomerization. Activity ratio of at least 100 between the two photostates in at least 3 catalytic applications. Full reversibility of the photoswitching for at least 5 cycles. Scaling up and industrial valorization.