1
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Bunno A, Shigemitsu H, Yoshikawa A, Osakada Y, Fujitsuka M, Ishiwari F, Saeki A, Ohkubo K, Mori T, Kida T. Supramolecular nanosheet formation-induced photosensitisation mechanism change of Rose Bengal dye in aqueous media. Chem Commun (Camb) 2024; 60:889-892. [PMID: 38165640 DOI: 10.1039/d3cc05731c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2024]
Abstract
Development of two-dimensional materials and exploration of their functionalities are significant challenges due to their potential. In this study, we successfully fabricated a supramolecular nanosheet composed of amphiphilic Rose Bengal dyes in an aqueous medium. Furthermore, we elucidated a distinct change in the photosensitisation mechanism induced by nanosheet formation.
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Affiliation(s)
- Asuka Bunno
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Hajime Shigemitsu
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Center for Future Innovation (CFi), Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
- Global Center for Medical Engineering and Informatics, Osaka University, 2-2 Yamadaoka, Suita 565-0871, Japan
| | - Aya Yoshikawa
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Yasuko Osakada
- Institute for Advanced Co-creation Studies, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Mamoru Fujitsuka
- The Institute of Scientific and Industrial Research (ISIR), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan
| | - Fumitaka Ishiwari
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Center for Future Innovation (CFi), Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Akinori Saeki
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kei Ohkubo
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
- Institute for Advanced Co-creation Studies, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Tadashi Mori
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
| | - Toshiyuki Kida
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
- Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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2
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El Guesmi N. Synthesis, Optical and Electrochemical Properties of Novel Formazan Analogs Incorporated Fluorene Moiety. ChemistrySelect 2023. [DOI: 10.1002/slct.202203963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Nizar El Guesmi
- Department of Chemistry Faculty of Applied Sciences Umm Al-Qura University Makkah 21955 Saudi Arabia
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3
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Dingenen F, Borah R, Ninakanti R, Verbruggen SW. Probing oxygen activation on plasmonic photocatalysts. Front Chem 2022; 10:988542. [PMID: 36171996 PMCID: PMC9510664 DOI: 10.3389/fchem.2022.988542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Accepted: 08/26/2022] [Indexed: 11/13/2022] Open
Abstract
In this work we present an assay to probe the oxygen activation rate on plasmonic nanoparticles under visible light. Using a superoxide-specific XTT molecular probe, the oxygen activation rate on bimetallic gold-silver "rainbow" nanoparticles with a broadband visible light (> 420 nm) response, is determined at different light intensities by measuring its conversion into the colored XTT-formazan derivate. A kinetic model is applied to enable a quantitative estimation of the rate constant, and is shown to match almost perfectly with the experimental data. Next, the broadband visible light driven oxygen activation capacity of this plasmonic rainbow system, supported on nano-sized SiO2, is demonstrated towards the oxidation of aniline to azobenzene in DMSO. To conclude, a brief theoretical discussion is devoted to the possible mechanisms behind such plasmon-driven reactions.
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Affiliation(s)
- Fons Dingenen
- Department of Bioscience Engineering, University of Antwerp, Sustainable Energy, Air & Water Technology (DuEL), Antwerp, Belgium
- Nanolab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Rituraj Borah
- Department of Bioscience Engineering, University of Antwerp, Sustainable Energy, Air & Water Technology (DuEL), Antwerp, Belgium
- Nanolab Center of Excellence, University of Antwerp, Antwerp, Belgium
| | - Rajeshreddy Ninakanti
- Department of Bioscience Engineering, University of Antwerp, Sustainable Energy, Air & Water Technology (DuEL), Antwerp, Belgium
- Nanolab Center of Excellence, University of Antwerp, Antwerp, Belgium
- Department of Physics, Electron Microscopy for Material Science, University of Antwerpen, Antwerp, Belgium
| | - Sammy W. Verbruggen
- Department of Bioscience Engineering, University of Antwerp, Sustainable Energy, Air & Water Technology (DuEL), Antwerp, Belgium
- Nanolab Center of Excellence, University of Antwerp, Antwerp, Belgium
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4
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Cross-Disciplinary Application for Qualitative Magnesium Corrosion Assays. Bioinorg Chem Appl 2022; 2022:8289447. [PMID: 35800067 PMCID: PMC9256404 DOI: 10.1155/2022/8289447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Revised: 03/18/2022] [Accepted: 06/04/2022] [Indexed: 11/22/2022] Open
Abstract
At the moment, unserviceable magnesium implants make a good case in point for further responsible study in this field. Whether we are willing to admit it or not, existing methods for corrosion monitoring are exposed to susceptibility and instability. Interdisciplinary theories and the existing corrosion experiments were combined based on their various merits for developing an accurate and precise corroding experiment for Mg/Mg alloys. We used the water-soluble tetrazolium-8 (WST-8) reagent to further complete the immersion experiment. The color change of the solution reflects the rationale of corrosion, followed by monitoring the degree of corrosion. The feasibility of this idea will be demonstrated.
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5
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Wei XF, Zhu QS, Guo JD, Shang JK. Obtaining ultra-high throwing power in Cu electroplating of flexible printed circuit by fast consumption of a suppressor. J Solid State Electrochem 2021. [DOI: 10.1007/s10008-021-05055-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Zhao J, Zhu R, Zhang X, Zhang B, Liu Y, Li Y, Wang W, Phillips DL. A photoenhanced oxidation of amino acids and the cross-linking of lysozyme mediated by tetrazolium salts. Phys Chem Chem Phys 2021; 23:3761-3770. [PMID: 33538741 DOI: 10.1039/d0cp04887a] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tetrazolium salts (TZs) are pervasively utilized as precursors in the dye industry, colorimetric probes in enzyme assays and for exploring nanomaterial toxicity, but its own toxicity is not investigated enough so far. Using femtosecond transient absorption spectroscopy, nanosecond pulse radiolysis (ns-PRL), western blotting and UV-vis absorption spectroscopy, here we characterized a neutral tetrazolinyl radical (with the same maximum absorption at 420 nm and different lifetimes of 5.0 and 9.0 μs for two selected TZs), the key intermediate of TZs reduction, and noticed TZs-formazan production under UV light irradiation accompanied by 41% increase in the cross-linking of lysozyme (Lyso, model protein) compared to TZs-free sample, which uncovered the photoenhanced oxidation of TZs towards Lyso. The ns-PRL in a reductive atmosphere simulated the electron/proton donors of amino acid residues in Lyso upon photoexcitation and revealed the reduction mechanism of TZs, as that first followed one-electron-transfer and then probably proton-coupled electron transfer. This is the first time to report on the photoenhanced oxidation mechanism of TZs, which would provide new insights into the applications of TZs in cell biology, "click" chemistry and nanotoxicology.
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Affiliation(s)
- Jianfeng Zhao
- Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong 11111, P. R. China
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7
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Turkoglu G, Akkoç S. Substituent‐Dependent Absorption Spectra, Electrochemical and Antiproliferative Activity Studies of Some 3‐(4‐(Benzyloxy)phenyl)‐5‐(4‐methoxyphenyl)‐1‐(substitutedphenyl)formazans. ChemistrySelect 2020. [DOI: 10.1002/slct.202003498] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Gulsen Turkoglu
- Department of Chemistry Faculty of Science Anadolu University 26470 Eskisehir Turkey
| | - Senem Akkoç
- Department of Basic Pharmaceutical Sciences Faculty of Pharmacy Suleyman Demirel University 32260 Isparta Turkey
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8
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Turkoglu G, Akkoç S. Synthesis, optical, electrochemical and antiproliferative activity studies of novel formazan derivatives. J Mol Struct 2020. [DOI: 10.1016/j.molstruc.2020.128028] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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9
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Ishiki K, Nguyen DQ, Morishita A, Shiigi H, Nagaoka T. Electrochemical Detection of Viable Bacterial Cells Using a Tetrazolium Salt. Anal Chem 2018; 90:10903-10909. [DOI: 10.1021/acs.analchem.8b02404] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- Kengo Ishiki
- Department of Applied Chemistry, Osaka Prefecture University, 1-2 Gakuen, Naka, Sakai, Osaka 599-8570, Japan
| | - Dung Q. Nguyen
- Department of Applied Chemistry, Osaka Prefecture University, 1-2 Gakuen, Naka, Sakai, Osaka 599-8570, Japan
| | - Aya Morishita
- Department of Applied Chemistry, Osaka Prefecture University, 1-2 Gakuen, Naka, Sakai, Osaka 599-8570, Japan
| | - Hiroshi Shiigi
- Department of Applied Chemistry, Osaka Prefecture University, 1-2 Gakuen, Naka, Sakai, Osaka 599-8570, Japan
| | - Tsutomu Nagaoka
- Organization for Research Initiatives, Yamaguchi University, 2-16-1 Tokiwadai, Ube, Yamaguchi 755-8611, Japan
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10
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Suzuki N, Sanada T, Terashima C, Suzuki T, Arai T, Saitou S, Kawashima T, Mizutani A, Saitou T, Nakata K, Katsumata KI, Kondo T, Yuasa M, Fujishima A. Systematic studies of TiO2-based photocatalysts anti-algal effects on Chlorella vulgaris. J APPL ELECTROCHEM 2016. [DOI: 10.1007/s10800-016-1031-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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11
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Turkoglu G, Berber H. Novel formazan derivatives containing phenylsulfanyl and carbonyl units: synthesis, optical and electrochemical properties. RSC Adv 2016. [DOI: 10.1039/c6ra23008c] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
New phenylsulfanyl and aryl carbonyl containing formazan derivatives 4a–4h and 5a–5h have been developed, and investigated the effect of substituents on their photophysical and electrochemical properties.
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Affiliation(s)
- Gulsen Turkoglu
- Department of Chemistry
- Faculty of Science
- Anadolu University
- 26470 Eskisehir
- Turkey
| | - Halil Berber
- Department of Chemistry
- Faculty of Science
- Anadolu University
- 26470 Eskisehir
- Turkey
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12
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Ostrovskaya VM, Shpigun LK, Shushenachev YV, Buryak AK, Peregudov AS. Synthesis and properties of sulfo-containing tetrazolium betaines and their formazan precursors. RUSS J GEN CHEM+ 2015. [DOI: 10.1134/s1070363215090066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Teramura H, Iwasaki M, Ushiyama M, Ogihara H. Evaluation of a Novel Dry Sheet Culture Method for Rapid Enumeration of Total Aerobic Count in Foods. J Food Prot 2015; 78:1885-90. [PMID: 26408139 DOI: 10.4315/0362-028x.jfp-15-114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
A novel dry sheet culture method (Sanita-kun ACplus; SkACp) for rapid enumeration of total viable count has been developed. This rehydrated plate system comprises an adhesive sheet, nonwoven fabric coated with nutrients, and two types of water absorption polymers. In addition, SkACp facilitates methods for both rapid count (rapid mode: 24-h incubation) and accurate enumeration (standard mode: 48-h incubation) because it not only contains conventional 2,3,5-triphenyltetrazolium chloride but also contains two kinds of new tetrazolium salts for rapid and accurate enumeration of total aerobic count. When SkACp was assessed with 91 microorganisms, 87 strains (95.6%), excluding lactic acid and psychrotrophic bacteria, formed red-colored colonies within 24 h, whereas all microorganisms tested formed colonies within 48 h. The SkACp method, with both 24 and 48 h of incubation, was compared with plate count agar (PCA) and 3M Petrifilm AC (PAC) by using 107 naturally contaminated foods. For all foods tested (n = 107), the linear correlation coefficients of 48-h counts on SkACp compared with PCA and PAC were 0.98 and 0.75, respectively, while the 24-h counts on SkACp compared with PCA and PAC were 0.77 and 0.96, respectively. For foods tested, excluding yogurt and lactic beverages ( n = 101), the linear correlation coefficients of 48-h counts on SkACp compared with PCA and PAC were 0.98 and 0.96, respectively, while the 24-h counts on SkACp compared with PCA and PAC were 0.96 and 0.95, respectively. These results demonstrated that SkACp (48 h) is a useful alternative for the enumeration of the total aerobic count for all foods, whereas SkACp (24 h) was also an effective method for rapid enumeration in foods, excluding yogurt and lactic beverages.
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Affiliation(s)
- Hajime Teramura
- Yokohama Research Center, JNC Corporation, 5-1 Ookawa, Kanazawa-ku, Yokohama, Kanagawa 236-8605, Japan; Department of Food Bioscience and Biotechnology, College of Bioresource Science, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan.
| | - Mihoko Iwasaki
- Yokohama Research Center, JNC Corporation, 5-1 Ookawa, Kanazawa-ku, Yokohama, Kanagawa 236-8605, Japan
| | - Masashi Ushiyama
- Yokohama Research Center, JNC Corporation, 5-1 Ookawa, Kanazawa-ku, Yokohama, Kanagawa 236-8605, Japan
| | - Hirokazu Ogihara
- Department of Food Bioscience and Biotechnology, College of Bioresource Science, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
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14
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Renault C, Marchuk K, Ahn HS, Titus EJ, Kim J, Willets KA, Bard AJ. Observation of Nanometer-Sized Electro-Active Defects in Insulating Layers by Fluorescence Microscopy and Electrochemistry. Anal Chem 2015; 87:5730-7. [DOI: 10.1021/acs.analchem.5b00898] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christophe Renault
- Center
for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Kyle Marchuk
- Center
for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Hyun S. Ahn
- Center
for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Eric J. Titus
- Center
for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Jiyeon Kim
- Center
for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Katherine A. Willets
- Center
for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Allen J. Bard
- Center
for Electrochemistry, Department of Chemistry, The University of Texas at Austin, Austin, Texas 78712, United States
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15
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Ahmed OU, Mjalli FS, Al-Wahaibi T, Al-Wahaibi Y, AlNashef IM. Stability of Superoxide Ion in Phosphonium-Based Ionic Liquids. Ind Eng Chem Res 2015. [DOI: 10.1021/ie504893k] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Omar U. Ahmed
- Petroleum
and Chemical Engineering Department, Sultan Qaboos University, Al Khoudh, Muscat 123, Sultanate of Oman
| | - Farouq S. Mjalli
- Petroleum
and Chemical Engineering Department, Sultan Qaboos University, Al Khoudh, Muscat 123, Sultanate of Oman
| | - Talal Al-Wahaibi
- Petroleum
and Chemical Engineering Department, Sultan Qaboos University, Al Khoudh, Muscat 123, Sultanate of Oman
| | - Yahya Al-Wahaibi
- Petroleum
and Chemical Engineering Department, Sultan Qaboos University, Al Khoudh, Muscat 123, Sultanate of Oman
| | - Inas M. AlNashef
- Department
of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, Masdar City, Abu Dhabi, United Arab Emirates
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16
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Protasenko NA, Poddel’skii AI, Smolyaninov IV, Berberova NT, Fukin GK, Cherkasov VK, Abakumov GA. Complex of triphenylantimony(v) catecholate with 5-(2,6-dimethylphenyl)-3-(4-pyridyl)-1-phenylformazan. Russ Chem Bull 2015. [DOI: 10.1007/s11172-014-0530-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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17
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Turkoglu G, Berber H, Kani I. Synthesis, crystal structure, optical and electrochemical properties of novel diphenylether-based formazan derivatives. NEW J CHEM 2015. [DOI: 10.1039/c4nj02353f] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new class of formazan derivatives was synthesized and the existence of hydrogen bond in formazan skeleton was explored with experimental and computational studies.
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Affiliation(s)
- Gulsen Turkoglu
- Chemistry Department
- Faculty of Science
- Anadolu University
- 26470 Eskişehir
- Turkey
| | - Halil Berber
- Chemistry Department
- Faculty of Science
- Anadolu University
- 26470 Eskişehir
- Turkey
| | - Ibrahim Kani
- Chemistry Department
- Faculty of Science
- Anadolu University
- 26470 Eskişehir
- Turkey
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18
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19
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Hayyan M, Mjalli FS, AlNashef IM, Hashim MA. Generation and stability of superoxide ion in tris(pentafluoroethyl)trifluorophosphate anion-based ionic liquids. J Fluor Chem 2012. [DOI: 10.1016/j.jfluchem.2012.06.028] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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20
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Long term stability of superoxide ion in piperidinium, pyrrolidinium and phosphonium cations-based ionic liquids and its utilization in the destruction of chlorobenzenes. J Electroanal Chem (Lausanne) 2012. [DOI: 10.1016/j.jelechem.2011.10.008] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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21
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Wang S, Yu H, Wickliffe JK. Limitation of the MTT and XTT assays for measuring cell viability due to superoxide formation induced by nano-scale TiO2. Toxicol In Vitro 2011; 25:2147-51. [DOI: 10.1016/j.tiv.2011.07.007] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 07/07/2011] [Accepted: 07/08/2011] [Indexed: 12/22/2022]
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22
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Tezcan H, Şenöz H, Tokay N. Spectral and electrochemical behavior of 1-[(NO2, COOH)-substituted phenyl]-3,5-diphenylformazans. MONATSHEFTE FUR CHEMIE 2011. [DOI: 10.1007/s00706-011-0661-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Luo Y, Hu G, Zhu A, Kong B, Wang Z, Liu C, Tian Y. A biomimetic sensor for the determination of extracellular O2− using synthesized Mn-TPAA on TiO2 nanoneedle film. Biosens Bioelectron 2011; 29:189-94. [DOI: 10.1016/j.bios.2011.08.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2011] [Revised: 08/12/2011] [Accepted: 08/14/2011] [Indexed: 01/19/2023]
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24
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Chen CH, Lu CW, Huang SM, Dow WP. Effects of supporting electrolytes on copper electroplating for filling through-hole. Electrochim Acta 2011. [DOI: 10.1016/j.electacta.2011.04.109] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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25
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Savini I, Arnone R, Rossi A, Catani MV, Del Principe D, Avigliano L. Redox modulation of Ecto-NOX1 in human platelets. Mol Membr Biol 2010; 27:160-9. [PMID: 20462348 DOI: 10.3109/09687688.2010.485936] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
By modulating the cellular redox state, the plasma membrane electron transport (PMET) is important in platelet biology; indeed, the oxidant/antioxidant balance plays a central role during activation of the coagulation pathway. None the less, in human platelets, the PMET system has not yet been fully characterized and the molecular identities of most components are unknown. Here, for the first time, the presence of the plasma membrane hydroquinone (NADH) oxidase Ecto-NOX1 in human platelets has been described. We found that Ecto-NOX1 expression is modulated by capsaicin: Indeed, it is positively regulated through a mechanism requiring binding of capsaicin to its receptor, namely the transient receptor potential vanilloid subtype 1 (TRPV1). Ligand-receptor interaction triggers a signalling cascade leading to ROS production, which in turn enhances expression and activity of Ecto-NOX1. Redox regulation of Ecto-NOX1 may be important to platelet recruitment and activation during inflammatory diseases.
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Affiliation(s)
- Isabella Savini
- Department of Experimental Medicine & Biochemical Sciences, University of Rome "Tor Vergata", Rome, Italy
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26
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Islam MM, Imase T, Okajima T, Takahashi M, Niikura Y, Kawashima N, Nakamura Y, Ohsaka T. Stability of Superoxide Ion in Imidazolium Cation-Based Room-Temperature Ionic Liquids. J Phys Chem A 2009; 113:912-6. [DOI: 10.1021/jp807541z] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Md. Mominul Islam
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
| | - Tatsuya Imase
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
| | - Takeyoshi Okajima
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
| | - Mitsuo Takahashi
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
| | - Yoshihiro Niikura
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
| | - Norimichi Kawashima
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
| | - Yoshiyuki Nakamura
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
| | - Takeo Ohsaka
- Department of Electronic Chemistry, Interdisciplinary Graduate School of Science and Engineering, Tokyo Institute of Technology, Mail Box G1-5, 4259 Nagatsuta, Midori-ku, Yokohama 226-8502, Japan, Department of Chemical Science and Engineering, Tokyo National College of Technology, 1220-2 Kunugida, Hachioji, Tokyo 193-0997, Japan, Department of Clinical Engineering, Toin University of Yokohama, 1614 Kurogane-cho, Aoba-ku, Yokohama, 225-8502, Japan, and Chemical Resources Laboratory, Tokyo Institute of
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Tezcan H, Uzluk E, Aksu ML. Synthesis, spectroscopic and electrochemical studies on bis-[1,3-substituted (Cl, Br) phenyl-5-phenyl formazanato]nickel(II) complexes. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2008; 70:973-982. [PMID: 18055250 DOI: 10.1016/j.saa.2007.10.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/23/2007] [Revised: 09/11/2007] [Accepted: 10/04/2007] [Indexed: 05/25/2023]
Abstract
In this study, new 1:2 Ni complexes of 1,3-substituted phenyl-5-phenylformazans were synthesized with -Cl, -Br substituents in the o-, m-, p-positions of the 1-phenyl ring and -NO2 group in the m-position of the 3-phenyl ring. Their structures were elucidated and spectral behaviors were investigated with the use of elemental analysis, GC-Mass, 1H NMR, 13C NMR, FTIR, UV-vis spectra. Furthermore electrochemical properties such as number of electrons transferred (n), diffusion coefficients (D) and possible reaction mechanism of the compounds were determined with the use of cyclic voltammetry, ultramicrodisc electrode and chronoamperometry. The relation between their absorption properties and electrochemical properties was examined. A linear correlation was obtained between Hammett substituent coefficients with lambda(max) values.
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Affiliation(s)
- Habibe Tezcan
- Department of Chemistry, Faculty of Gazi Education, Gazi University, Teknikokullar, 06500 Ankara, Turkey.
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28
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Tezcan H, Uzluk E, Aksu ML. Electrochemical and structural properties of 1,3-substituted (–Cl, –Br) phenyl-5-phenylformazans. J Electroanal Chem (Lausanne) 2008. [DOI: 10.1016/j.jelechem.2008.03.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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29
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Prevention of hemoglobin interference on the formazan reaction. Clin Chim Acta 2008; 390:115-21. [PMID: 18237551 DOI: 10.1016/j.cca.2008.01.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2007] [Revised: 01/06/2008] [Accepted: 01/08/2008] [Indexed: 11/21/2022]
Abstract
BACKGROUND Hb interference induces false test results and thus hinders the establishment of further applications that use the formazan method. We attempted to eliminate hemoglobin (Hb) interference on the formazan reaction. METHODS Total serum bile acid (TBA) reagent was constructed to elucidate the mechanism of Hb interference. We determined the interaction between formazan reagents and Hb using spectral analysis and investigated the optimal condition of the reagent to establish a practical technique for its prevention. RESULTS Hb caused overestimation during TBA measurement, and its influence was attributed to the errors of both the sample and reagent blank signals. These errors were triggered by the reaction between Hb and formazan reagents. The main finding was that the addition of both imidazole and sodium nitrite in the reagent considerably accelerated the oxidation of Hb, even at neutral pH. The overestimation of TBA concentration was reduced to <3 micromol/l even with Hb concentrations >or=500 mg/dl. CONCLUSIONS We elucidated the mechanism of Hb interference on the formazan reaction and succeeded in preventing its influence. This will help to solve the technical difficulties associated with utilizing formazan reactions as routine diagnostic tools.
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Kishioka SY, Takekawa T, Yamada A. Electrochemical determination of the superoxide ion concentration from KO2 dissolved in dimethyl sulfoxide. ANAL SCI 2004; 20:1465-6. [PMID: 15524204 DOI: 10.2116/analsci.20.1465] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An electrochemical determination of the O2- concentration from KO2 in DMSO solution using steady state microelectrode voltammetry shows that the KO2/DMSO method with the combined use of a crown compound or sonication is a reliable and simple technique for introduction of O2- to the biomimitic reaction system.
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Affiliation(s)
- Shin-Ya Kishioka
- Department of Chemistry, Nagaoka University of Technology, Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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31
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Tsukatani T, Ide S, Ukeda H, Matsumoto K. Metabolism of benzoquinone by yeast cells and oxidative characteristics of corresponding hydroquinone: application to highly sensitive measurement of yeast cell density by using benzoquinone and a chemiluminescent probe. Biosci Biotechnol Biochem 2004; 68:1525-32. [PMID: 15277757 DOI: 10.1271/bbb.68.1525] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The metabolic efficiency of seven derivatives of 1,4-benzoquinone (BQ) by yeast cells and the oxidative characteristics of the corresponding hydroquinones (HQs) were studied by electrochemical, spectrophotometric and chemiluminescent methods. The spectrophotometric method was based on the reduction of a tetrazolium salt to formazan dye during the autoxidation of HQs generated by yeast cells under alkaline conditions. The amounts of HQs detected directly by the electrochemical method did not agree with those calculated from the formazan dye obtained by the spectrophotometric method. A tetrazolium salt was reduced to a formazan dye by both the superoxide anion radical (O2-*) generated during the autoxidation of 2,3,5,6-tetramethyl-1,4-HQ and by HQ itself. Little formazan dye was formed, and hydrogen peroxide (H2O2) was then finally produced during the autoxidation of 1,4-HQ or 2-methyl-1,4-HQ. Formazan dye and H2O2 were generated at a certain ratio during the autoxidation of derivatives of dimethyl-1,4-HQ or 2,3,5-trimethyl-1,4-HQ. The analytical method based on chemiluminescence with lucigenin and 2,3,5,6-tetramethyl-1,4-BQ was applied to highly sensitive measurement of the yeast cell density. A linear relationship between the chemiluminescence intensity and viable cell density was obtained in the range of 1.2 x 10(3) - 4.8 x 10(4) cells/ml. The detection limit was 4.8 x 10(2) cells/ml.
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Affiliation(s)
- Tadayuki Tsukatani
- Biotechnology and Food Research Institute, Fukuoka Industrial Technology Center, Kurume 839-0861, Japan.
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