This event is jointly organized withthe Cluster of Excellence e-conversion
The colloquium will be streamed online.
Prof. Shadi Fatayer, KAUST
Invited by Prof. Frédéric Laquai and Prof. Emiliano Cortés
On-surface reactions facilitates the synthesis of chemical species elusive to traditional gas-phase and solution-based chemistry. By tuning parameters such as temperature, surface material/orientation, molecular precursor and environment, a plethora of systems can be generated and studied with surface-sensitive techniques. In this colloquium, two types of systems will be discussed: reactions based on self-assembled monolayers (SAMs) formed at the liquid-solid interface and monolayer amorphous carbon synthesized on a metal surface under ultra-high vacuum.
In the first part, I will discuss how SAMs help improve the performance of organic electronic devices through interface passivation and enhanced carrier transport. Yet, there is limited information regarding the chemical structure of the SAMs upon functionalization and subsequent thermal treatment. I will show an example composed of carbazole-derived SAMs on model gold electrodes, focusing on the chemical structure changes induced by thermal treatments. Furthermore, we correlate the microscopic changes with their impact on the electrode’s work function. Our results highlight the on-surface synthesis of electronically active SAMs as an alternative approach for modifying the work function of electrodes for organic electronics.
In the second part of the talk, I will discuss an on-surface strategy that generates monolayer amorphous carbon. Subsequently, I will discuss the structural and electronic properties of this unconventional system.