Ertl, Cathrin Delphine. From blue to red : emission colour tuning in iridium(III) complexes with sulfur-functionalized ligands for LEECs. 2016, PhD Thesis, University of Basel, Faculty of Science.
Official URL: http://edoc.unibas.ch/diss/DissB_11984
Cationic iridium(III) complexes of the type [Ir(C^N)2(N^N)]+, where C^N is a cyclometallating ligand (e.g. 2-phenylpyridine (ppy)) and N^N is an ancillary ligand (e.g. 2,2'-bipyridine (bpy)), have been extensively used in LEECs due to their excellent properties. High quantum yields and stability make them well suited for application in light emitting devices. Furthermore, the emission colour can be tuned easily, spanning the whole visible region. The frontier orbitals are spatially separated in this type of complex and by careful design of the ligands, desired blue- or red-shifts in the emission maximum are possible.
In this thesis, the synthesis, characterization and LEEC performance of iridium(III) complexes containing sulfur-functionalized ligands are described. Thioether- and sulfone-based cyclometallating ligands are introduced in Chapter I, resulting in complexes with yellow to green emission. In Chapter II, the influence on photophysical, electrochemical and device properties of iridium complexes with regioisomeric cyclometallating ligands containing a methylsulfonyl group is investigated. Based on the results of the previous chapters, the combination of sulfone-substituted cyclometallating ligands with electron-rich ancillary ligands to obtain blue emitting complexes is described in Chapter III. Chapter IV summarizes a series of iridium complexes with benzothiazole-based ancillary ligands, yielding red emitters with exceptionally long LEEC lifetimes. Ongoing work in the field of glycosylated iridium complexes is reported in Chapter V.
|Advisors:||Housecroft, Catherine E. and Mayor, Marcel|
|Faculties and Departments:||05 Faculty of Science > Departement Chemie > Chemie > Anorganische Chemie (Housecroft)|
|Bibsysno:||Link to catalogue|
|Number of Pages:||1 Online-Ressource (xix, 194 Seiten)|
|Last Modified:||02 Jan 2017 13:00|
|Deposited On:||02 Jan 2017 12:59|
Repository Staff Only: item control page