Presenter: Prof.Cyril Poriel (Université de Rennes)
Topic: Complex p-conjugated architectures: Frommolecular design to OLED applications
Time: 15:00 PM, Oct. 25th (Wednesday)
Location: 909-B
Abstract
Organic electronics have imposed a strong demand on π-conjugatedmolecules and the synthesis of new materials with specific properties isstrongly developed worldwide. Regioisomerism, also called positional isomerism,is an important concept in organic chemistry which can have remarkableconsequences on the properties of molecules. Indeed, a simple structuralmodification can drastically influence the electronic and physical propertiesof an organic semi-conductor (OSC), which in turn strongly modifies the performanceand stability of the corresponding electronic device. Although very promising,this concept remains nevertheless rarely used in optoelectronics. Herein, wewill investigate the impact of regioisomerism to finely tune the singlet andtriplet energies of different classes of materials, from dihydroindenofluoreneto fluorenes isomers, leading to highly efficient optoelectronic devices.Different molecular designs of high triplet energy hosts incorporating variouselectron withdrawing and/or electron donating fragments for high performancegreen and blue Phosphorescent OLEDs will be presented.
Biography
2003 PhD in organic/organomettalic chemsitry(porphyrin chemsitry for catalysis)
2003/2005: Joined the group of Prof. C. J.Moody at the University of Exeter (UK) working on total synthesis of complexnatural products.
2005- now : Head of the group-Organic semiconductorsfor organic electronics
81 publications / H-index 27.
Expert at the European community.
Awards :
J Mater Chem C special Issue 4 emergingInvestigators in Material Science 2014.
Excellence price of the CNRS (2012)
Contact: Prof. Liangsheng Liao
Editor: JuanYang
