Universität zu Köln

Jordan, Rose ORCID: 0000-0003-0764-1639 (2025). Molecular Design of Organometallic Ni, Pd and Pt Complexes Aiming for Ni(II)-based Triplet Emission. PhD thesis, Universität zu Köln.

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Abstract

The challenge of ultimately replacing Pt with the cheaper and more abundant Ni in optoelectronic applications is approached from multiple angles. The effect of heavy phosphine analogue ancillary ligands PnPh3, Pn = As and Sb, on the photophysical properties of tridentate, cyclometalated pincer complexes is explored as one strategy to enhance or facilitate their triplet emission. To elucidate the structure-property-relationships in doubly cyclometalated complexes [M(C^N^C)(PnPh3)] (M = Pd, Pt), UV/vis absorption and emission spectroscopy as well as transient absorption spectroscopy are used among others. For the complexes [Pd(C^N^C)(PnPh3)], the investigation additionally includes the optimization and generalization of their synthesis and exploration of their reactivity. Concurrently, a second approach is explored, probing the ability of the strongly sigma-donating, monodentate perfluorophenyl ligand to promote phosphorescence from Ni(II) complexes in place of (double) cyclometalation.

Item Type:	Thesis (PhD thesis)
Creators:	Creators Email ORCID ORCID Put Code Jordan, Rose rose.jordan@uni-koeln.de orcid.org/0000-0003-0764-1639 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-788983
Date:	2025
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects:	Chemistry and allied sciences
Uncontrolled Keywords:	Keywords Language organometallic chemistry English photoluminescence English
Date of oral exam:	15 September 2025
Referee:	Name Academic Title Klein, Axel Prof. Dr. Wickleder, Mathias Prof. Dr. Schatzschneider, Ulrich Prof. Dr.
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/78898