Development of iridium(III)-based sensitizers for oxygen-independent phototherapy and solar energy conversion
(2019)
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- Authors
- Supervisors
- Elias, Benjamin
- Abstract
- In photochemistry, the early 2000s have marked the beginning of the success story of iridium. Thanks to their exceptional optoelectronic properties and their great photostability, iridium(III)-based compounds have emerged as promising light-emitting and light-sensitive materials. Actually, iridium(III) is characterized by the unique capacity to accommodate up to three carbometalated bonds to give mono-, bis- or tris-cyclometalated complexes. Consequently, a wide variety of spectroelectrochemical properties are available, depending on the number of Ir-C bonds formed. Nevertheless, these properties may also be fine-tuned by modifying the chemical structure of the ligands chelated onto the metal center. Herein, we report on the synthesis of a novel family of trifluoromethyl-substituted bis-cyclometalated Ir(III) complexes with an increased photo-oxidizing power. Our goal was to develop type I sensitizers for oxygen-independent anticancer phototherapy. By modifying the diimine ligand, Ir(III)-based compounds with enhanced visible light absorption have also been obtained. They were studied in order to achieve photo-induced oxidation of halides upon solar excitation. Finally, more fundamental aspects, including the investigation of the primary light-induced processes leading to the final excited state of our complexes, have also been examined.
- Affiliations
Citations
Bevernaegie, R. (2019). Development of iridium(III)-based sensitizers for oxygen-independent phototherapy and solar energy conversion. https://hdl.handle.net/2078.5/105271