特別講演
Rudolph A. Marcus
Electron
transfer in chemistry, electrochemistry and biology
R. A. Marcus (California Institute of Technology, USA)
Arthur Amos
Noyes Laboratory of Chemical Physics 127-72, California Institute of
Technology, Pasadena, California 91125 USA
The field of electron transfer now incorporates many areas of
interfacial and bulk phase phenomena. These include electron transfers at
many interfaces, metal/liquid, semiconductor/liquid, polymer/liquid, and
liquid/liquid, as well as studies as varied as solar energy conversion and
solvent dynamics of polar media. Some of the developments in these fields
will be described in this lecture.
招待講演
Robert J. Gordon
Using
the Phase of Light as a Photochemical Tool
Robert J. Gordon (University of Illinois at Chicago, USA)
Department of
Chemistry (m/c 111) , University of Illinois at Chicago, 845 West Taylor
Street, Chicago, IL 60607-7061 USA
Coherent control of atomic and molecular processes rely on quantum
mechanical interference of competing excitation paths, which produce a
phase lag between different product channels. This phase lag is a
signature of control that can be exploited to maximize the yields of
selected products. We have also found, however, that there is a wealth of
dynamical information that can be learned from the energy dependence of
the phase lag, which we explore in this paper.
Sakai Hirofumi
Alignment
of neutral molecules by intense nonresonant laser fields
Sakai Hirofumi (University of Tokyo)
酒井広文 東京大学大学院理学系研究科物理専攻
〒113-0033 東京都文京区本郷7-3-1
We show that a strong nonresonant laser pulse can be used to align
neutral molecules. The technique, applicable to both polar and nonpolar
molecules, relies on the anisotropic interaction between the strong laser
field and the induce dipole moment of molecules. The alignment is measured
by photodissociating the molecules with a femtosecond laser pulse and
detecting the direction of the photofragments by imaging
techniques.
Keitaro Yoshihara
Primary Electron Transfer in Plant Photosystem I Reaction
Center
Shigeichi Kumazaki 1, Isamu Ikegami 2, Hiroko Furusawa 1, Shuichiro Yasuda
1, and Keitaro Yoshihara 1 (1Japan Advanced Inst. of Sci. & Tech. and
2 Teikyo Univ.)
吉原經太郎
北陸先端科学技術大学院大学
〒923-1292 石川県能美郡辰口町旭台1-1
Japan Advanced Institute of
Science and Technology, Tatsunokuchi, Ishikawa 923-1292, Japan
All the photosynthetic reaction center (RC) complexes belong to the two
types: the photosystem (PS) I / green sulfur bacteria and PS II / purple
bacterial type, judging from the homologies of proteins and cofactors.
They seem to have differentiated in the early era of Earth's history and
have efficient electron transfer systems that enable conversion of solar
energy with high quantum efficiency. We present mechanism and dynamics of
the primary and secondary ET in the PS I RC and compare with that in
purple bacterial RC.
Hideki Minoura
Electrochemical/Photoelectrochemical Processing of Compound
Semiconductors for Solar Energy Conversion
Minoura Hideki (Gifu
University)
箕浦秀樹 岐阜大学大学院工学研究科 環境エネルギーシステム専攻
〒501-1193 岐阜市柳戸1-1
Graduate
School of Engneering, Enviromental and Renewable Energy System Division,
Gifu University
Jan Augustynski
Photoelectrochemistry of mesoporous oxide semiconductors
Jan Augustynski (Department of Chemistry, University of Geneva,
Switzerland)
Prof. Jan Augustynski, Universit_ de Gen_ve, Chimie
Appliquee 30, quai E, Ansermet, CH-1211 Geneve 4, Switzerland
The persisting interest in mesoporous nanocrystalline semiconducting
films is associated with their use(i) as an electronically conducting
matrix of dye-sensitized electrodes being a part of liquid-junction
photovoltaic cells and also(ii) as a site of photoelectrochemical or
photocatalytic reactions occurring under band gap illumination. This
lecture is aimed at discussing peculiar properties of such oxide
semiconducting materials with particular emphasis on charge separation and
charge transport phenomena.
Masakazu Anpo
The Design
and Development of Unique Titanium Oxide:
Photocatalysts Capable of
Operating under Visible Light Irradiation by Applying Ion-Engineering
Techniques
Masakazu Anpo (Osaka Prefecture University)
安保正一 大阪府立大学工学部応用化学科
〒599-8531堺市学園町1-1
The design of environmentally-friendly photocatalysts operating under
solar beam irradiation is the most important challenge facing chemical
scientists for the 21st century. The present study deals with detailed
investigations into designing chemically stable and efficient titanium
oxide photocatalysts which are able to operate under solar or visible
light irradiation by applying ion-engineering techniques.
R. Srinivasan
Laser
Ablation of Polymers: a 20-year Perspective
R. Srinivasan (UVTech Associates, U.S.A.)
UVTech Associates, USA 98
Cedar Lane, Ossining, NY 10562, USA
It is almost 20 years since ultraviolet laser ablation and etching of organic
polymers and tissue was discovered at the IBM Research Center in Yorktown
Heights, New York. Both scientific and technological interest in this phenomenon
has grown very rapidly in these two decades. The progress to date and the
future that can be anticipated will be discussed.
Hiroshi Fukumura
Laser-Induced Molecular Implantation into Polymer Surfaces for
Fabricating Photo-Functional Devices
Hiroshi Fukumura (Tohoku
University)
福村裕史 東北大大学院理学研究科化学専攻
〒980-8578 仙台市青葉区荒巻
By using pulsed lasers, functional organic molecules can be implanted
space-selectively into the surfaces of polymers without the decomposition
of the molecules. This is due to localized transient heating as a result
of the photothermal conversion. The spatial extent of the implanted region
remains less than a micrometer, which would enable us to fabricate various
kinds of photo-functional devices.
Kazuyuki Hirao
Control
of Nanocrystallization from Glasses by Femto-second Laser
Irradiation
K.Hirao and Y.Kondo (Kyoto
University)
平尾一之 京都大学大学院工学研究科
〒606-8501京都市左京区吉田本町
Recent breakthrough technique of Control of nanocrystallization from
glasses by photochemical reaction using femtosecond laser in glasses
developed by researchers at Hirao ERATO Project opens a new and reliable
way of fabrication of photonics components, such as three-dimensional
integrated optical circuits, optical switches and amplifiers.
Zeev Valy Vardeny
Laser
Action of pi-Conjugated Polymers in Films, Microstructures and Photonic
Crystals
Z. V. Vardeny, S. V. Frolov, D. Chinn, M. N. Shkunov, K. Yoshino, A.
Fujii, R. V. Gregory, R. Baughman, and A. A. Zakhidov (University of Utah,
USA)
Department of Physics, University of Utah, 115S 1400 E Rm 201,
Salt Lake City, UT84112-0830, USA
Recent studies of lasing, stimulated emission, and transient emission
and photoinduced absorption at high excitation intensities in luminescent
pi-conjugated polymer thin films and microcavities will be presented.
Specifically the optical properties and emission spectra of cylindrical,
high-Q polymer thin film microcavities and of distributed feedback and
random cavities in opal photonic crystals will be discussed.
Heinz Baessler
Exciton
Dissociation in Conjugated Polymers
Heinz Baessler (Institute of Physical, Macromolecular and Nuclear
Chemistry and Material Science Center, Philipps University,
FRG)
Institut f_r Physikalische Chemie, Philipps- Universit_t Marburg,
Hans-Meerwein-Str. D-35032 Marburg, Germany
The question how neutral excitons in conjugated polymers dissociate
into charge carriers will be discussed. Experimental techniques involve
photoconduction and fluorescence as well as delayed fluorescence under an
electric field. Time dependent studies on a ladder type
poly-para-phenylene indicate that recombination of geminately bound
electron-hole pairs are the major source of delayed fluorescence.
Takahiro Seki
Photoresponsive Monolayers for Polymer Chain
Manipulation
Takahiro Seki (Research Laboratory of Resources Utilization, Tokyo
Institute of Technology)
関 隆広 東京工業大学資源化学研究所
〒226-8503 横浜市緑区長津田町4259
We introduce here our new results on light manipulation of polymer
chains in two aspects; (1) photomechanical response of photochromic
polymeric monolayer at interfaces, and (2) on-demand active controls of
chain organizations of other polymers such as polysilane using this
monolayer. Such monolayer-assisted photoprocesses may provide new
opportunities for polymer science and processing.
Masahiko Sisido
Photoinduced Electron Transfers in Engineered Proteins and Model
Peptides
Masahiko Sisido (Okayama
University)
宍戸昌彦 岡山大学工学部生物機能工学科
〒700-8530 岡山市津島中3-1-1
Site-directed nonnatural mutagenesis was carried out on streptavidin
and cytochromo b5 to incorporate various fluorescence groups and electron
acceptors. Site-to-site photoinduced electron transfer was studied on the
engineered proteins. Distance dependence of the ET rates on proteins was
compared with that measured on model peptides.
Shinji Hayashi
Effects
of Impurity Doping on the Photoluminescence Properties of Nanocrystalline
Si
Shinji Hayashi (Kobe University)
林 真至 神戸大工学部電気電子工学科
〒657-8501 神戸市灘区六甲台1-1
Although the photoluminescence (PL) properties of nanocrystalline Si
have been investigated intensively during the past decade, effects of
impurity atoms on the PL properties are not yet well known. In this talk,
I will present our recent results of PL measurements for B- and P-doped
nanocrystalline Si as well as for SiGe alloy nanocrystals. I will show
that the PL intensity and wavelength are controllable by the impurity
doping. I will also discuss the mechanisms of the changes in PL properties
caused by the doping.
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