Dr. Rainer Friedlein

マテリアルサイエンス研究科セミナー（第１回）
Supramolecular Self-Assembly –
From Genetic Matter to Organic
Electronics
Dr. Rainer Friedlein
Japan Advanced Institute of Science and Technology
School of Materials Science
日
場
時：平成２６年５月２８日（水）１３：３０～１４：３０
所：マテリアルサイエンス研究科 Ⅳ棟８階中セミナー室
講演要旨：
Inspired by life itself, numerous applications in biotechnology and organic electronics rely on
template-mediated molecular self-assembly. Most relevant in this context are quasi-one-dimensional assemblies
of heterocyclic molecules that drive biological replication and genetic information processing, on one hand,
and may allow charge transport mediated by the  electronic cores of the molecules that must be considered in
damage mechanisms of genetic matter but is inspiring as well in terms of molecular electronics applications, on
the other.
While the two-dimensional assembly of nucleic acids is largely based on hydrogen bonding interactions
between complementary bases in Watson-Crick pairs, the crucial quasi-one-dimensional columnar assembly in
the direction out of the molecular planes is driven by - interactions of the aromatic cores of the molecular
heterocycles.
Here, I am reviewing systematic photoelectron spectroscopy studies of structural and electronic properties of
thin highly-ordered multilayer films made of molecules ranging from polyaromatic hydrocarbons via
porphyrins and discotic liquid crystalline materials to the building blocks of RNA and DNA, nucleosides and
nucleotides. These studies reveal the strong connection between the capacity for assembly and electronic
properties and functions of aromatic molecules in general and shed light on the mechanisms behind the original
molecular self-assembly on surfaces that led to the emergence of self-replicating molecules in particular.
The formation of extended electronic states along the axis of such molecular stacks promote excellent and
highly-anisotropic charge transport properties that are shown to depend on the structural details of the
columns and that can be controlled by molecular design. This capacity together with the ability of processing
from solutions promises novel entrypoints into transistor and photovoltaic applications in which the structure
of heteroassemblies must be controlled locally and in which a fast transport of charge carriers is required.
講演者略歴：
1996 Master in Physics, Dresden University of Technology, Germany
2000 PhD in Physics, Institute of Solid State and Materials Research & Dresden University of Technology,
Germany
2000-2002 Postdoctoral Scientist, Linköping University, Sweden
2004-2006 Research Assistant and Assistant Professor, Linköping Universitx, Sweden
2004-2005 Visiting Professor, Chiba University, Japan
2006-2010 Lecturer, School of Materials Science & RCIS, JAIST
2010-2014 Associate Professor, School of Materials Science, JAIST
since 2014 Guest Associate Professor, JAIST
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