Jansen Chua, MSc Candidate.

 DEPARTMENT OF CHEMISTRY

CHEMISTRY 601/603

FINAL MSc PRESENTATION

SPEAKER:            Jansen Chua, MSc Candidate.

DATE:                     Monday,  December 05, 2011.

TIME:                      2:00 pm

PLACE:                  SB 324

TITLE:                    Selective Tuning of the Exocyclic P-Substituent of Dithienophosphole: A Structure-Property Study

ABSTRACT:           

A new family of P-functionalized dithienophosphole-systems has been synthesized and characterized. Chemical modifications on the phosphorus centre allowed tuning of their optoelectronic properties. The structure-property relationships focused in this work involves functionalization of various exocyclic pendant units leading to intriguing characteristics that warrant further investigation.

The first section is centred on the synthesis and modification of polycyclic aromatic hydrocarbon-containing dithienophospholes, where energy-transfer (ET) studies were performed. The polycyclic aromatic hydrocarbon (PAH) unit behaves as a donor for the dithienophosphole acceptor, allowing for an efficient transfer of energy.

The second study is focused on the synthesis and characterization of heteroatom-containing dithienophospholes in which (oligo)thienyl and triphenylamine (TPA) units were investigated. Optical properties and π-π interactions were of interest for the (oligo)thienyl-based system, while charge transfer (CT) and ET processes were explored for the TPA-based system. Depending on the functionalization of the P-substituent, interesting photophysical, geometric, and electronic properties were observed. This demonstrates the potential use of these materials for future applications.