Metal- and Ligand-Centered Chirality in Square-Planar Coordination Compounds

Schulte, Thorben Rüdiger

dc.contributor.advisor	Clever, Guido H. Prof. Dr.
dc.contributor.author	Schulte, Thorben Rüdiger
dc.date.accessioned	2019-10-09T09:26:05Z
dc.date.available	2019-10-09T09:26:05Z
dc.date.issued	2019-10-09
dc.identifier.uri	http://hdl.handle.net/21.11130/00-1735-0000-0005-126A-0
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-7656
dc.identifier.uri	http://dx.doi.org/10.53846/goediss-7656
dc.language.iso	eng	de
dc.publisher	Niedersächsische Staats- und Universitätsbibliothek Göttingen	de
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc	540	de
dc.title	Metal- and Ligand-Centered Chirality in Square-Planar Coordination Compounds	de
dc.type	doctoralThesis	de
dc.contributor.referee	Clever, Guido H. Prof. Dr.
dc.date.examination	2018-10-26
dc.description.abstracteng	Chirality is an ubiquitous phenomenon in nature and fundamental for the principle of life we know. One part of this thesis explores the self-assembly and the host-guest chemistry of novel chiral coordination compounds based on chiral organic bispyridyl ligands and Pd(II) metal centers. The structure and the properties of the assemblies are the result of a combination of variables like the temperature, the counter ions, the solvent, the shape and the flexibility of the ligand. The cavity provided by these structures is of high interest, as it can provide a chiral environment for guests to mimic chiral biological systems. The chiral environment can be used as enantioselective sensor or for enantioselective catal-ysis. Therefore, the preparation of chiral ligands and assemblies is described. The struc-tures are characterized by NMR, ESI-MS, UV-Vis, CD and X-ray techniques. The variety of the formed three-dimensional structures includes monomeric cages, interpenetrated double cages, rings and catenanes. The conditions for the selective formation have been studied and even the enantiomeric excess of the used ligand was shown to have a tre-mendous effect on the structure and the properties of the assembly. Host guest experi-ments showed the potential of the provided chiral cavity as sensor, as a chiral helicene-based cage showed different binding affinities towards enantiomeric guests that could be monitored via NMR. Another part of this thesis explores chiral cyclometalated Pt(II) complexes. Cyclomet-alated Pt(II) complexes are heavily studied for their interesting photophysical properties and their use in OLEDs. In contrast to luminescent octahedral complexes, the number of reported chiral Pt(II) complexes is comparable low. In octahedral complexes, where chi-rality is often the result of the assembly, the square planar coordination sphere needs a special design of achiral ligands for the formation of a chiral complex. A new kind of ligand motif for luminescent Pt(II) complexes is reported in this thesis. The synthesis of the achiral trans-chelating ligand and the formation of several chiral Pt(II) complexes is shown. The complexes are characterized by NMR, ESI-MS, UV-Vis, CD and X-ray tech-niques and the photoluminescent properties are reported, which showed circularly polar-ized luminescence for this new kind of binding motif.	de
dc.contributor.coReferee	Stalke, Dietmar Prof. Dr.
dc.subject.eng	chemistry	de
dc.subject.eng	chirality	de
dc.subject.eng	anion recognition	de
dc.subject.eng	host-guest chemistry	de
dc.subject.eng	interpenetration	de
dc.subject.eng	supramolecular chemistry	de
dc.subject.eng	circularly polarized luminescence	de
dc.identifier.urn	urn:nbn:de:gbv:7-21.11130/00-1735-0000-0005-126A-0-1
dc.affiliation.institute	Fakultät für Chemie	de
dc.subject.gokfull	Chemie (PPN62138352X)	de
dc.identifier.ppn	1678627933

Dateien

Name:PhD_ThorbenSchulte_Print_SUBmitted.pdf

Größe:8.276Mb

Format:PDF

Öffnen

Name:: PhD_ThorbenSchulte_Print_SUBmi ...
Größe:: 8.276Mb
Format:: PDF

Öffnen

Das Dokument erscheint in:

Fakultät für Chemie (inkl. GAUSS) [701]

Zur Kurzanzeige