Pathway complexity in the self-assembly of luminescent platinum(II) complexes

We are pleased to announce the keynote lecture:

PATHWAY COMPLEXITY IN THE SELF-ASSEMBLY OF LUMINESCENT PLATINUM(II) COMPLEXES

Alessandro Aliprandi
Department of Chemical Sciences 
University of Padova

ABSTRACT
In square planar Pt(II) complexes the presence of the filled dz2 orbital normal to the molecular plane is, in some cases, responsible for the establishment of weak dispersion intermolecular interactions as consequence of the closedshell metal-metal electronic overlap, called metallophilic interaction. When such interactions occur, the luminescence can be switched ON and reach photoluminescent quantum yield close to unity, a phenomenon known as aggregation induced emission (AIE). Typically, the closer the metal canters are, the greater the metallophilic interactions and the bathochromic shift of the emission. The dynamic change of the photoluminescent properties in terms of emission color, intensity and excited state lifetime makes such class of compounds a prefect probe to study self-assembly process. Herein, we present how we can characterize a complex system with multiple selfassembly pathway and solvent dependent chiral amplification process. In particular we will show the role of the molecular design in the self-assembly process, and how stimuli responsive silica capsule can be used to stabilize metastable states and to trigger the formation of the thermodynamic assembly on demand. Finally, we will show how the media play a pivotal control on the self-assembly process leading even to co-assembled structures.

The seminar is part of the symposium serie "BOTTOM-UP DESIGN AND SYNTHETIC CONSTRUCTION OF LIFE-LIKE TECHNOLOGIES".

WHEN: Wednesday 16th June 2023, 14:00-15:00

WHERE: Aula Magna (C11), Department of Chemical and Pharmaceutical Sciences, Main Campus, University of Trieste