Multi component protein films by layer by layer: assembly and electron transfer [Elektronische Ressource] / von Roman Dronov

Roman Dronov

Sujets

• Physik

Informations

• Publié par: universitat_potsdam
• Publié le: 01 janvier 2008
• Nombre de lectures: 13
• Langue: English
• Poids de l'ouvrage: 6 Mo

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Max-Planck-Institut für Kolloid- und Grenzflächenforschung




Multi-Component Protein Films by Layer-by-Layer: Assembly and
Electron Transfer








Dissertation
zur Erlangung des akademischen Grades
"doctor rerum naturalium"
(Dr. rer. nat.)
in der Wissenschaftsdisziplin "Physik"











eingereicht an der
Mathematisch-Naturwissenschaftlichen Fakultät
der Universität Potsdam




von
Roman Dronov





Potsdam, den 28 November 2007















































Elektronisch veröffentlicht auf dem
Publikationsserver der Universität Potsdam:
http://opus.kobv.de/ubp/volltexte/2008/1728/
urn:nbn:de:kobv:517-opus-17281
[http://nbn-resolving.de/urn:nbn:de:kobv:517-opus-17281] Ph.D Thesis Roman Dronov





















“As a rule, what is out of sight disturbs men's minds more seriously than what they see”


Julius Caesar
























II Ph.D Thesis Roman Dronov

Acknowledgements

This project would have been impossible without the advice, support and criticism
from a broad group of people. First of all, I am grateful for having Profs. Helmuth
Möhwald, Fred Lisdat, Frieder Scheller and Dr. Dirk G. Kurth as my advisors. Co-advised
projects can easily become a nightmare, swamped in conflicts and with the student
struggling in the middle. Helmuth Möhwald, Fred Lisdat and Frieder Scheller have an
exceptional working relationship, which allowed me to gain a lot from the interplay
between the different research programs. I appreciate the freedom and space they gave me
and their tolerance in my effort to pursue the thesis both during the times when the
research was in its difficult stages and when it was going smoothly. I thank Frieder
Scheller for his inestimable constant support and good nature, which helped he throughout
the whole project and, especially in its final stage. I thank Helmuth Möhwald for his
invaluable advice, especially in the beginning of this Ph.D project, for the opportunity to
work at the MPI of Colloids and Interfaces, and his enthusiasm and clear vision. He always
managed to see through my sometimes convoluted thinking. I thank Dirk Kurth for his
immense help in seeing new perspectives in my “very ordinary” data, as well as in
scientific writing and handling public talks. It has always been effective keeping me
working on my “B-Game”! I thank Fred Lisdat for the immense professional guidance he
offered throughout the whole course of my Ph.D project, his extensive support and
valuable advice. He has always been an inexhaustible source of ideas. It is impossible to
overrate the value of our short and not-so-short discussions in order to advance a little bit
further in untangling the mysteries of the lab research.
I also thank the members of my thesis committee and the referees of my thesis for
critical reading of my work.
I thank my former and current lab mates in the AG-Kurth at the MPI and AG-
Scheller at the Uni-Potsdam whom I learned a great deal from and who made the routine of
the lab work much fun. From the AG-Lisdat: Franziska Wegerich, Dr. Thomas
Balkenhohl, Dr. Andrey Krylov, Jan Kafka, Dr. Oliver Pänke, Daniel Schäfer, Andreas
Kapp, Dr. Martin Weigel, Dr. Moritz Beissenhirtz, and all the colleagues from the
department of Analytical Biochemistry. From the AG-Kurth: Naoko Miyashita, Guntram
Schwarz, Torsten Sievers, Annika Vergin, Viviane Friese, Dr. Sabine Fuchs, Dr. Yves
Bodenthin, Dr. Jesus Pitarch Lopez, Dr. Matthias Beinhoff, Dr. Hongwei Duan, Anne
Lindner, and all my colleagues and friends from the MPI. In particular, I want to thank Dr.
Moritz Beissenhirtz for giving me a smooth start on my way to protein multilayers at the
time when it was really necessary, Dr. Jií Žeravic for a practical crash-course on QCM,
Carsten Teller for occasionally lending me QCM crystals, Dr. Walter Stöcklein for help
with SPR, Dr. Jan Halamek and Raj Kumar for laboratory philosophy. I also would like to
acknowledge a considerate assistance of Anneliese Heilig in AFM, as well as evaporation
III Ph.D Thesis Roman Dronov

of tremendous amounts of gold on numerous silicon wafers to take the ultra flat Au
electrodes to the next level of perfection.
Due to the interdisciplinary nature of the project, I benefited to a large extent from the
International Max Planck Research School on Biomimetic Systems (IMPRS) offering
essential specialized training given by the best scientists in the field, coordinated by Dr.
Angelo Valleriani.
I thank the European taxpayers for financial support via the Marie Curie program “Early
Stage Training on Biomimetic Systems” MEST-CT-2004-504465, which I gratefully
acknowledge. This project has been more than just a group of people working on similar
topics. It helped most of us to feel a spirit of collaboration and establish first scientific
connections. In particular, I would like to thank Dr. Kirstine Berg-Sørensen of the
Technical University of Denmark for accommodating me at her group during my short
visit within “Marie Curie Stay Abroad”.
I also thank a former scientific officer of the European Commission Carmela Di
Santo who was responsible for the Marie Curie program “Early Stage Training on
Biomimetic Systems” specifically for allowing me to have a part of the “Marie Curie Stay
Abroad” at the University of Natural Resources and Applied Life Sciences, Vienna, in the
Nanobiotechnology group. I thank all members of the group of Prof. Uwe B. Sleytr for
being wonderful hosts and making everything to make my stay as fruitful and
unforgettable as it was. During this time I learned a lot about S-layers and AFM
measurements in liquid from Jacqueline Friedmann, whom I also would like to thank for a
great time at “Lange Nacht der Musik”!
A part of the project was carried out in collaboration with Prof. Peter Hildebrandt at
the Max-Volmer-Laboratorium of the Technical University of Berlin. This part would have
been impossible without a practical expertise in Raman spectroscopy of Dr. Daniel H.
Murgida and Jana Grochol.
In addition, I would like to acknowledge Profs. Silke Leimkühler, Ulla
Wollenberger and my good friend Roberto Spricigo for support and very stimulating in-
house collaboration, which made it possible to give more answers to open questions on
inter-protein electron transfer.
No matter that the research here was as good as it gets, it was the group of people
that I met along the way who made MPI, Potsdam University, and Golm a second home.
I also thank my undergraduate mentor Dr. Larisa A. Bityutskaya and my friends
from her group at the University of Voronezh. Besides their support and friendship, they
set an important example for me early in my research career by their work ethics and the
supportive environment they created in this group.
Finally, I’d like to thank my parents Vasily Dronov and Liubov Dronova, and my
sister, Natalia for their support and love. I dedicate this thesis to my parents who have
always believed in me and instilled in me a great confidence.

IVPh.D Thesis Roman Dronov

List of Abbreviations

DET Direct electron transfer
SAM Self-assembled monolayer

Proteins

Cyt.c Cytochrome c
XOD Xanthine oxidase
BOD Bilirubin oxidase
SOx Sulfite oxidase

Chemicals

MUA 11-Mercaptoundecanoic acid
MU 11-Mercaptoundecanol
PASA Poly(anilinesulfonic acid)
PSS Poly(styrenesulfonic acid)
PAH Poly(allylamine hydrochloride)
PEI Poly(ethyleneimine)

Methods

CV Cyclic voltammetry
AFM Atomic force microscopy
QCM Quartz crystal microbalance
SPR Surface plasmon resonance
LbL Layer-by-Layer
LB Langmuir-Blodgett

Units

Da Dalton
M Molar
A Ampere
V Volt

3k kilo- (10 )
-3m mili- (10 )
-6μ micro- (10 )
-9n nano- (10 )







VPh.D Thesis Roman Dronov

Table of Contents

CHAPTER 1. INTRODUCTON…………………………………………………... 1
1.1. STATE OF THE ART…………………………………………………………... 1
1.2. AIM OF THIS STUDY…………………………………………………………. 3

CHAPTER 2. LITERATURE DIGEST…………………………………………... 4
2.1. BIOSENSORS………………………………………………………………….. 4
2.1.1. Biosensors’ ABC……………………………………………………… 4
2.1.2. Biosensors based on direct electron transfer of redox proteins……….. 10
2.2. ELECTROCHEMISTRY OF PROTEINS AND ENZYMES………………….. 1