A5033645225- Amoebic Infections and Treatments
- Parasitic Infections and Diagnostics
- Porphyrin and Phthalocyanine Chemistry
- Diagnosis and treatment of tuberculosis
- Pediatric Hepatobiliary Diseases and Treatments
- Advanced Photocatalysis Techniques
- Photochemistry and Electron Transfer Studies
- Legionella and Acanthamoeba research
- Trypanosoma species research and implications
- Monoclonal and Polyclonal Antibodies Research
- Parasites and Host Interactions
- TiO2 Photocatalysis and Solar Cells
- Pancreatitis Pathology and Treatment
- Soybean genetics and cultivation
- Malaria Research and Control
- Electrochemical Analysis and Applications
- Electrocatalysts for Energy Conversion
- Heme Oxygenase-1 and Carbon Monoxide
- Surface Chemistry and Catalysis
- Luminescence and Fluorescent Materials
- Research on Leishmaniasis Studies
- CO2 Reduction Techniques and Catalysts
- Plant Pathogens and Resistance
- Catalytic Processes in Materials Science
- Electrochemical sensors and biosensors
Tokai University
2015-2024
Tokyo Metropolitan University
2015-2024
Osaka Metropolitan University
2024
Jissen Women's University
2024
Kyoto University
2023
Joint Center for Artificial Photosynthesis
2014-2020
Kowa (Japan)
2018
Chulalongkorn University
2018
Fudan University
1993-2015
Shanghai Medical College of Fudan University
2015
The quantitative excited energy transfer reaction between cationic porphyrins on an anionic clay surface was successfully achieved. efficiency reached up to ca. 100% owing the "Size-Matching Rule" as described in text. It revealed that important factors for efficient are (i) suppression of self-quenching adjacent dyes, and (ii) segregated adsorption structure two kinds dyes surface. By examining many different porphyrins, we found tetrakis(1-methylpyridinium-3-yl) porphyrin (m-TMPyP)...
Photochemical CO2 reduction sensitized by rhenium-bipyridyl complexes has been studied through multiple approaches during the past several decades. However, a key reaction intermediate, CO2-coordinated Re-bipyridyl complex, which should govern activity of in photocatalytic cycle, never detected direct way. In this study on photoreduction catalyzed 4,4'-dimethyl-2,2'-bipyridine (dmbpy) [Re(dmbpy)(CO)3Cl] (1), we successfully detect solvent-coordinated Re complex [Re(dmbpy)(CO)3DMF] (2) as...
We have been investigating complexes composed of nanolayered materials with anionic charges such as clay nanosheets and dye molecules cationic porphyrins. It was found that the structure assembly on layered can be effectively controlled by use electrostatic host-guest interaction. The intermolecular distance, molecular orientation angle, segregation/integration behavior, immobilization strength dyes in clay-dye complexes. mechanism to control these structural factors has discussed...
The mechanism inducing the unique absorption spectral shifts of porphyrin molecules upon adsorption on clay surface was experimentally confirmed to be flattening meso substituent with respect plane ring. We investigated shift systematically by using seven types derivatives, differing in their center metal, substituent, and number cationic sites. aggregation, which usually induces shift, is suppressed our clay/porphyrin systems. strengths were estimated as relative equilibrium constants Krel....
Bio-inspired molecular-engineered systems have been extensively investigated for the half-reactions of H2 O oxidation or CO2 reduction with sacrificial electron donors/acceptors. However, there has yet to be reported a device dye-sensitized molecular photoanodes coupled photocathodes in an aqueous solution without use reagents. Herein, we will report integration SnIV - AlIII -tetrapyridylporphyrin (SnTPyP AlTPyP) decorated tin oxide particles (SnTPyP/SnO2 AlTPyP/SnO2 ) photoanode...
To determine if genetic diversity of Blastocystis hominis exists in Japan, we monitored 64 B. hominis-infected people: 39 asymptomatic people whose infections were detected during routine medical check-ups (32 Japanese and 7 non-Japanese) 25 patients with gastrointestinal symptoms who visited the outpatient clinics St. Luke's International Hospital (19 6 non-Japanese). We known 2 new riboprint patterns isolates from infected people. There no differences distribution ribodemes between...
fac-Re(bpy)(CO)3Cl (bpy = 2,2′-bipyridine) and similar complexes are known to act as photocatalysts for the reduction of CO2 CO in presence electron donors. However, these do not have significant absorption visible region. In a separate publication, we reported successful combination fac-Re(bpy)(CO)4Cl with zinc porphyrin that has strong region produce ZnTMP-Re(bpy)(NHAc)...
Saponite-type clays that have different cation exchange capacities were successfully synthesized by hydrothermal synthesis. The structure and properties analyzed X-ray diffraction, fluorescence, 27Al NMR, FT-IR, thermogravimetric differential thermal analysis, atomic force microscopy, capacity measurement. intercharge distances on the synthetic saponite (SS) surfaces calculated to be 0.8–1.9 nm basis of a hexagonal array. complex formation behavior between SS cationic porphyrins was...
Intercalation of seven types cationic surfactants, including polyfluorinated into a cation-exchangeable clay mineral, saponite, was investigated. All the surfactants were found to intercalate in amounts exceeding cation exchange capacity (CEC). This tendency more evident cases ((((perfluoroalkanoyl)amino)ethyl)hexadecyl)dimethylammonium bromide (CnF-S, where n indicates number carbons perfluoroalkyl group, F denotes fluorinated surfactant, and S surfactant having single, long alkyl chain);...
A lambda gt11 cDNA library was constructed from the poly(A)+ RNA of trophozoites Entamoeba histolytica HM-1:IMSS strain. The immunologically screened with monoclonal antibody 4G6, which is specific for 30,000-Mr antigen pathogenic isolates. 0.7-kb clone isolated, and its nucleotide sequence determined. To examine whether this gene isolates, a polymerase chain reaction performed by using four sets primers genomic DNA nonpathogenic isolates as templates. Amplified DNAs were detected not only...
A monoclonal antibody (MAb) produced against trophozoites of Entamoeba histolytica strain HM-1:IMSS, reacted with all 42 isolates and 4 clones showing pathogenic zymodeme (Z) patterns, i.e., Z-II, Z-II alpha-, (glucose phosphate isomerase: gamma +), Z-VII, Z-VII alpha lack, Z-XI, Z-XIV, Z-XIX, regardless culture conditions, geographical origins, or host symptoms in an indirect fluorescence test. In contrast, the MAb failed to react 14 possessing nonpathogenic zymodemes Z-I Z-VIII did not...
This paper proposes a novel methodology to improve noncollisional photochemical reactions such as Förster resonance energy transfer on solid surfaces. Since an excited guest molecule densely adsorbed the surfaces is quenched by unfavorable interaction between guests in general, electron and transfers tend be inefficient compared those homogeneous systems. In this work, mechanism of quenching process dyes clay surface typical for was systematically investigated using series porphyrin...
A novel photoactivated artificial muscle model unit is reported. Here we show that organic/inorganic hybrid nanosheets reversibly slide horizontally on a giant scale and the interlayer spaces in layered structure shrink expand vertically by photoirradiation. The sliding movement of system first example an having much similarity with natural fibrils. In particular, our molecular exhibits macroscopic morphological change (∼1500 nm) relative to size ∼1 nm means reversible mechanism.
A novel optically transparent membrane composed of porphyrin-clay mineral complexes was developed. Reversible solvatochromism behavior the successfully observed, due to an orientation change porphyrin in clay interlayer space. The lambda(max) value 423 nm acetone, while it 464 hexane. color changed from pink green through brown, when Sn used. mechanism for present system is very unique compared those conventionally reported materials.
Abstract We report herein a new molecular catalyst for efficient water splitting, aluminum porphyrins (tetra‐methylpyridiniumylporphyrinatealuminum: AlTMPyP), containing earth's most abundant metal as the central ion. One‐electron oxidation of porphyrin initiates two‐electron to form hydrogen peroxide primary reaction product with lowest known overpotential (97 mV). The aluminum‐peroxo complex was detected by cold‐spray ionization mass‐spectrometry in high‐resolution MS (HRMS) mode and...
Background A strategy to combat infectious diseases, including neglected tropical diseases (NTDs), will depend on the development of reliable epidemiological surveillance methods. To establish a simple and practical seroprevalence detection system, we developed microsphere-based multiplex immunoassay system evaluated utility using samples obtained in Kenya. Methods We immuno-assay simultaneously measure individual levels plasma antibody (IgG) against 8 antigens derived from 6 pathogens:...
Faced with the new stage of water oxidation by molecular catalysts (MCs) in artificial photosynthesis to overcome bottle neck issue, “Photon-flux density problem sunlight,” a two-electron process forming H2O2 place conventional four-electron evolving O2 has attracted much attention. The characteristics tin(IV)-tetrapyridylporphyrin (SnTPyP), as one most promising MCs for oxidation, been studied detail. protolytic equilibria among nine species SnTPyP, eight pKa values on axial ligands’...