Joanna Maria Malicka

Abstract : Ultrafine-grained (UFG) commercially pure (Ti Grade 2) and high-purity (Ti 99.99%) titanium can be a good alternative to less biocompatible Ti alloys in many biomedical applications. Their severe plastic deformation may lead to a substantial increase of strength, but their highly refined microstructure show a lower thermal stability which may limit their range of applications.

We show high-efficiency organic light emitting devices (OLEDs) employing new highly phosphorescent iridium complexes incorporating tetrazolate ligand. The nature of the excited states for these Ir(III) complexes was probed by means of electrochemical analysis, absorption and photoluminescence spectroscopies and with the aid of TD-DFT calculations. To demonstrate the high stability of these class of complexes we report TGA and DSC characterization.