N-Heteropolycycles as functional materials: organic semiconductors, fluorophores and building blocks for molecular surface networks
Séminaire Chimie ICGM/ED459
Prof. Lutz H.
Le Mercredi 16 Novembre 2022 à 10h
CNRS, Amphithéâtre Balard (bâtiment Balard RdC, 1919 route de Mende)
Date de début : 2022-11-16 10:00:00
Date de fin : 2022-11-16 11:30:00
Lieu : CNRS amphi Balard
Intervenant : Prof. Lutz H.
Anorganisch-Chemisches Institut, Universität Heidelberg, Germany
Organic semiconductors are key components of numerous electronic and optoelectronic devices for a wide range of applications such as light-emitting diodes, photovoltaic cells and organic thin-film transistors (TFTs). Thus the search for new organic materials which serve this purpose is of considerable current interest. Several years ago, we developed an efficient metal-induced synthesis of 4,9-diamino-3,10-perylenequinone diimine (DPDI) by oxidative coupling of two 1,8-diaminonaphthalene units.[1] This functionalized perylene may be converted to tetraazaperopyrene (TAPP)[2] as well as a range of derivatives[3] which have proved to possess considerable potential as organic n-channel semiconductors.[4]
We recently considerably expanded the chemical space towards more nitrogen-rich polycyclic compounds.[5a] Many of these are high quantum yield emitters, in solution, in polymer matrices and in the solid state.[5b] Some have displayed interesting potential for applications in molecular polaritonics.[5c]
Finally, heteropolycycles have proved to display an interesting surface chemistry when deposited on well defined faces of coinage metal single crystals.[6] The formation of stable porous surface networks (and their exciting physical properties),[7] provide highly ordered nanoscale grids and have been investigated in a series of studies.[8]
The author acknowledges funding by the Deutsche Forschungsgemeinschaft (DFG SFB 1249).
References
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