What is he best known for?
The fields of study he is best known for:
- Enzyme
- Catalysis
- Photosynthesis
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 most cited work include:
- Singlet Excited States and the Light‐Harvesting Function of Carotenoids in Bacterial Photosynthesis (143 citations)
- Efficient light harvesting through carotenoids. (141 citations)
- 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 (118 citations)
What are the main themes of his work throughout his whole career to date?
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.
He most often published in these fields:
- Photochemistry (50.63%)
- Raman spectroscopy (33.33%)
- Analytical chemistry (24.05%)
What were the highlights of his more recent work (between 2005-2015)?
- Photochemistry (50.63%)
- Atomic physics (5.91%)
- Diabatic (3.38%)
In recent papers he was focusing on the following fields of study:
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.
Between 2005 and 2015, his most popular works were:
- Structure of the light-harvesting bacteriochlorophyll c assembly in chlorosomes from Chlorobium limicola determined by solid-state NMR (91 citations)
- Fabrication of dye-sensitized solar cells using chlorophylls c1 and c2 and their oxidized forms c1′ and c2′ from Undaria pinnatifida (Wakame) (68 citations)
- Effects of plant carotenoid spacers on the performance of a dye-sensitized solar cell using a chlorophyll derivative: Enhancement of photocurrent determined by one electron-oxidation potential of each carotenoid (62 citations)
In his most recent research, the most cited papers focused on:
- Enzyme
- Catalysis
- Photosynthesis
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.
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