Yasushi Koyama spends much of his time researching Photochemistry, Raman spectroscopy, Conjugated system, Singlet state and Analytical chemistry. His Photochemistry research includes themes of Fluorescence, All trans, Photosynthetic bacteria, Photoisomerization and Aqueous solution. His Raman spectroscopy research includes elements of Carotene and Excited state, Vibronic coupling.
The concepts of his Singlet state study are interwoven with issues in Triplet state, Absorption and Physical chemistry. His Analytical chemistry study combines topics from a wide range of disciplines, such as Tetrahydrofuran, Infrared and Dimethylformamide. Within one scientific family, Yasushi Koyama focuses on topics pertaining to Crystallography under Bacteriochlorophyll, and may sometimes address concerns connected to Cis–trans isomerism and Isomerization.
His primary scientific interests are in Photochemistry, Raman spectroscopy, Analytical chemistry, Singlet state and Crystallography. Yasushi Koyama brings together Photochemistry and Conjugated system to produce work in his papers. His studies deal with areas such as Carotene, Triplet state, Bond order and Nuclear magnetic resonance as well as Raman spectroscopy.
His research in the fields of Absorption spectroscopy overlaps with other disciplines such as State. The Singlet state study which covers Bacteriochlorophyll that intersects with Photosynthetic bacteria. His Crystallography research is multidisciplinary, incorporating perspectives in Resonance, Intermolecular force, Dimer, Nuclear magnetic resonance spectroscopy and Chemical shift.
His primary areas of study are Photochemistry, Atomic physics, Diabatic, Excited state and Analytical chemistry. The Photochemistry study combines topics in areas such as Photocurrent, Singlet state, Raman spectroscopy and Energy conversion efficiency. The various areas that Yasushi Koyama examines in his Raman spectroscopy study include Photosynthetic reaction centre and Rhodobacter sphaeroides.
His work on Vibrational energy relaxation is typically connected to Mixing and State as part of general Atomic physics study, connecting several disciplines of science. His Absorption spectroscopy study in the realm of Analytical chemistry connects with subjects such as Spectral data and Decomposition. In his study, Bacteriochlorophyll, Computational chemistry, Spin polarization and Reaction centre is strongly linked to Carotenoid, which falls under the umbrella field of Absorption spectroscopy.
Yasushi Koyama focuses on Photochemistry, Photocurrent, Dye-sensitized solar cell, Energy conversion efficiency and Chlorophyll. His work deals with themes such as Excited state, Light-harvesting complex and Molecular dynamics, which intersect with Photochemistry. Yasushi Koyama combines subjects such as Proton NMR, Rhodobacter sphaeroides and Raman spectroscopy with his study of Light-harvesting complex.
His biological study spans a wide range of topics, including Light intensity, Polyene and Singlet state. His work often combines Dye-sensitized solar cell and Conjugated system studies. Many of his studies on Chlorophyll involve topics that are commonly interrelated, such as Analytical chemistry.
This overview was generated by a machine learning system which analysed the scientist’s body of work. If you have any feedback, you can contact us here.
Singlet Excited States and the Light‐Harvesting Function of Carotenoids in Bacterial Photosynthesis
Yasushi Koyama;Michitaka Kuki;Per Ola Andersson;Tomas Gillbro.
Photochemistry and Photobiology (1996)
Efficient light harvesting through carotenoids.
Thorsten Ritz;Ana Damjanović;Klaus J Schulten;Jian Ping Zhang.
Photosynthesis Research (2000)
Raman and infrared spectra of the all-trans, 7-cis, 9-cis, 13-cis and 15-cis isomers of β-carotene: Key bands distinguishing stretched or terminal-bent configurations form central-bent configurations
Yasushi Koyama;Ichiro Takatsuka;Munetaka Nakata;Mitsuo Tasumi.
Journal of Raman Spectroscopy (1988)
The 1Bu+, 1Bu-, and 2Ag- Energies of Crystalline Lycopene, β-Carotene, and Mini-9-β-carotene as Determined by Resonance-Raman Excitation Profiles: Dependence of the 1Bu- State Energy on the Conjugation Length
Tokutake Sashima and;Yasushi Koyama;Takashi Yamada and;Hideki Hashimoto.
Journal of Physical Chemistry B (2000)
Separation and determination of cis/trans-β-carotenes by high-performance liquid chromatography
Kiyoshi Tsukida;Kayoko Saiki;Tomoko Takii;Yasushi Koyama.
Journal of Chromatography A (1982)
Configuration of the carotenoid in the reaction centers of photosynthetic bacteria. Comparison of the resonance Raman spectrum of the reaction center of Rhodopseudomonas sphaeroides G1C with those of cis-trans isomers of β-carotene
Yasushi Koyama;Mariko Kito;Tomoko Takii;Kayoko Saiki.
Biochimica et Biophysica Acta (1982)
Mechanism of the Carotenoid-to-Bacteriochlorophyll Energy Transfer via the S1 State in the LH2 Complexes from Purple Bacteria
† Jian-Ping Zhang;Ritsuko Fujii;Pu Qian;Toru Inaba.
Plant and Cell Physiology (2000)
A new singlet-excited state of all-trans-spheroidene as detected by resonance-Raman excitation profiles
Tokutake Sashima;Hiroyoshi Nagae;Michitaka Kuki;Yasushi Koyama.
Chemical Physics Letters (1999)
The first detection of the 3A g - state in carotenoids using resonance-Raman excitation profiles
Kentaro Furuichi;Tokutake Sashima;Yasushi Koyama.
Chemical Physics Letters (2002)
The CC stretching Raman lines of [β-carotene isomers in the S1 state as detected by pump-probe resonance Raman spectroscopy
Hideki Hashimoto;Yasushi Koyama.
Chemical Physics Letters (1989)
If you think any of the details on this page are incorrect, let us know.
We appreciate your kind effort to assist us to improve this page, it would be helpful providing us with as much detail as possible in the text box below: