Prof. Dr. Petra Rudolf (head of the Surfaces and Thin Films group, Zernike Institute for Advanced Materials, University of Groningen, The Netherlands) előadása Playing Lego with graphene: exfiliation and intercalation strategies to put graphene on surfaces and to produce pillared graphene structurescímmel

Even since the Mayans first used clays to make dyes, mankind has made use of layered materials. Over the past two centuries this effort is mirrored in scientific research leading to experiments to exfoliate into one- or few-atom thick sheets or to intercalate them with atoms and (macro)molecules, as well as to an elucidation of their laminar structure and peculiar properties. Currently we live in an era of enormous interest in the manipulation of two-dimensional materials following the discovery of graphene. In this presentation I shall start by illustrating various aspects of the exfoliation of pure and oxidized graphite. Then I shall discuss the deposition by a modified Langmuir Blodgett technique of graphene oxide and of graphene on a variety of substrates with a coverage that can be varied as desired from isolated sheets to a densely packed 2D arrangement. From there I shall pass on to pillared structures, for example of graphene oxide and carbon nanotubes, build up by the same modified Langmuir Blodgett technique in a layer-by-layer fashion. Finally I shall discuss pillared structures achieved by intercalation and in particular report on experimental and theoretical studies of the intercalation mechanism of polycyclic aromatic molecules into graphite oxide. Two representative molecules of this family, aniline and naphthalene amine behave very differently after intercalation, namely aniline molecules prefer to covalently bind to the graphene oxide matrix via chemical grafting, while napthalene amine molecules bind with the graphene oxide surface through π-π interactions. This new understanding opens new perspectives for the interaction of various aromatic molecules with graphite oxide and the so-called “intercalation chemistry”.

 Petra Rudolf   / CV

 Petra Rudolf was born in Munich, Germany. She studied Physics at the La Sapienza, University of Rome, where she specialized in Solid State Physics. In 1987 she joined the National Surface Science laboratory TASC INFM in Trieste for the following five years, interrupted by two extended periods in 1989 and 1990/1991 at Bell Labs in the USA, where she began to work on the newly discovered fullerenes. In 1993 she moved to the University of Namur, Belgium where she received her PhD in 1995 and then quickly progressed from postdoctoral researcher to lecturer and senior lecturer before taking up the Chair in Experimental Solid State Physics at the University in Groningen in 2003.  Her principal research interests lie in the areas of condensed matter physics and surface science, particularly molecular motors, graphene, organic thin films and inorganic-organic hybrids. She has published 210 peer-reviewed articles and 28 book chapters, and given 80 invited talks at international / national conferences.

Dr. Rudolf serves on the editorial boards of the New Journal of Physics and of EPL. She was the President of the Belgian Physical Society in 2000/2001 and was elected Fellow of the Institute of Physics (2001), Lid van verdienst of the Dutch Physical Society (2006), Fellow of the American Physical Society (2010) and member of the European Academy of Sciences and Arts (2015). For her work on molecular motors she received the 2007 Descartes Prize of the European Commission. In 2013 she was knighted by H.M. Queen Beatrix of the Netherlands.

szervezi: SZAB Kémiai Szakbizottság Anyagtudományi Munkabizottság

kapcsolattartó: Dr. Berkó András – e-mail: aberko@chem.u-szeged.hu