Decompotion of organic compound in nano-sized confined space by quantum beam

• Project/Area Number: 25390125
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Osaka University
• Principal Investigator: tojo sachiko 大阪大学, 産業科学研究所, 助教 (50197844)
• Project Period (FY): 2013-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2015: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
• Keywords: 電子線 / パルスラジオリシス / ラジカルイオン / 過渡ラマン / 過渡吸収 / 量子ビーム / 過渡共鳴ラマン / ラジカルカチオン / チオアニソール / 過渡ラマン分光 / 過渡赤外分光 / 短寿命活性中間体

Outline of Final Research Achievements

Nanosecond pulse radiolysis system has been improved to investigate the radiation chemical reactions of various samples. Diaryl diselenide radical anion generated during the pulse radiolysis at various temperatures. The relationship between the Se-Se bond cleavage and delocalization of unpaired electron in diaryl diselenide radical anion was investigated. Nanosecond pulse radiolysis technique has been employed to investigate the degradation of aromatic sulfides loaded in Nafion membranes　with　a thickness of 100 μm. The one-electron oxidation and OH radical addition of aromatic sulfides were clearly observed in Nafion membranes during pulse radiolysis. Relationship between the molecular structure and dimerization reactivity of aromatic sulfides radical cations in aqueous solution was studied by the nanosecond time-resolved resonance Raman spectroscopy during the pulse radiolysis.

Research Products

• [Journal Article] Structures of 4-Substituted Thioanisole Radical Cations Studied by Time-resolved Resonance Raman Spectroscopy during Pulse Radiolysis and Theoretical Calculations (2016)
  • Author(s): S. Tojo, M. Fujitsuka, and T. Majima
  • Journal Title: RSC Adv. Volume: 6 Issue: 111 Pages: 109334-109339
  • DOI: 10.1039/c6ra21460f
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Mesolysis processes with benzylic carbon-oxygen bond cleavage in radical anions of aryl benzyl ethers studied by electron pulse radiolysis in DMF (2016)
  • Author(s): M. Yamaji, S Tojo, M. Fujitsuka, A. Sugimoto, T. Majima
  • Journal Title: Bull. Chem. Soc. Jan Volume: 印刷中 Issue: 7 Pages: 798-803
  • DOI: 10.1246/bcsj.20160100
  • NAID: 130005253046
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Selenium-Selenium Bond Cleavage of Diaryl Diselenide Radical Anions During Pulse Radiolysis (2015)
  • Author(s): S. Tojo, M. Fujitsuka, A. Ouchi, T. Majima, Tetsuro
  • Journal Title: ChemPlusChem Volume: 80 Issue: 1 Pages: 68-73
  • DOI: 10.1002/cplu.201402376
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Structural study of various substituted biphenyls and their radical anions based on time-resolved resonance Raman spectroscopy combined with pulse radiolysis (2015)
  • Author(s): Jungkweon Choi, Dae Won Cho, Sachiko Tojo, Mamoru Fujitsuka, and Tetsuro Majima
  • Journal Title: The Journal of Physical Chemistry A Volume: 119 Issue: 5 Pages: 851-856
  • DOI: 10.1021/jp511229t
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Configurational changes of heme followed by cytochrome c folding reaction (2015)
  • Author(s): Jungkweon Choi, Dae Won Cho, Sachiko Tojo, Mamoru Fujitsuka, and Tetsuro Majima
  • Journal Title: Molecular BioSystems Volume: 11 Issue: 1 Pages: 218-222
  • DOI: 10.1039/c4mb00551a
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] Mesolysis of polyphenylethane radical anions (2016)
  • Author(s): Sachiko Tojo, Mamoru Fujitsuka, Tetsuro Majima
  • Organizer: 26th IUPAC International Symposium on Photochemistry
  • Place of Presentation: Osaka, Japan
  • Year and Date: 2016-04-03
  • Int'l Joint Research
• [Presentation] Mesolysis of polyphenylethane radical anions (2016)
  • Author(s): Sachiko Tojo
  • Organizer: 26th IUPAC International Symposium on Photochemistry
  • Place of Presentation: Osaka City Central Public Hall
  • Year and Date: 2016-04-03
  • Int'l Joint Research