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Lin, M.; Fu, H.*; Lampre, I.*; De Waele, V.*; Muroya, Yusa*; Yan, Y.*; Yamashita, Shinichi; Katsumura, Yosuke; Mostafavi, M.*
Journal of Physical Chemistry A, 113(44), p.12193 - 12198, 2009/10
Times Cited Count：7 Percentile：22.44(Chemistry, Physical)With a revisit of the absorption coefficient of the solvated electron in propane-1,2,3-triol, the temperature dependent behavior of the absorption spectrum of solvated electron was studied from room temperature to 573 K by pulse radiolysis techniques. The change in the absorption spectrum of solvated electron in propane-1,2,3-triol observed by cooling down from a high temperature to 333 K is compared with that occurring during the electron solvation process at 333 K. The effect of the specific molecular structure of propane-1,2,3-triol compared to other alcohols is discussed.
Kumagai, Yuta; Lin, M.; Lampre, I.*; Mostafavi, M.*; Muroya, Yusa*; Katsumura, Yosuke
Radiation Physics and Chemistry, 77(10-12), p.1198 - 1202, 2008/10
Times Cited Count：5 Percentile：35.07(Chemistry, Physical)The absorption spectra of the hydrated electron in concentrated LiCl, LiClO
, Li
SO, MgCl and Mg(ClO) deuterated water solutions were measured by pulse radiolysis techniques from room temperature to 300 
C at a constant pressure of 25 MPa. As salt effects, shifts to shorter wavelengths and broadening of the absorption band of the solvated electron were observed at room temperature. At elevated temperatures, similar spectral shifts were observed. The broadening of the spectrum, on the other hand, becomes smaller with increasing temperature. These result indicate that high concentration of salts not only form an ion atmosphere to cause the spectral shifts, but also affect the solvation structure of an electron. The smaller broadening at elevated temperatures suggest that a decrease in the density expand the distance between solvated electron and surrounding ions, and that therefore the effect on the solvation structure becomes smaller.
Lin, M.; Kumagai, Yuta; Lampre, I.*; Coudert, F.*; Muroya, Yusa*; Boutin, A.*; Mostafavi, M.*; Katsumura, Yosuke
Journal of Physical Chemistry A, 111(18), p.3548 - 3553, 2007/05
Times Cited Count：9 Percentile：30.94(Chemistry, Physical)Lin, M.; Mostafavi, M.*; Muroya, Yusa*; Lampre, I.*; Katsumura, Yosuke
Nuclear Science and Techniques, 18(1), p.2 - 9, 2007/02
Times Cited Count：1 Percentile：14.18(Nuclear Science & Technology)Lin, M.; Kumagai, Yuta; Muroya, Yusa*; Katsumura, Yosuke; Lampre, I.*; Coudert, F.*; Boutin, A.*; Mostafavi, M.*
no journal, ,
sMuroya, Yusa*; Lin, M.; Han, Z.*; Kumagai, Yuta; Lampre, I.*; Mostafavi, M.*; Katsumura, Yosuke
no journal, ,
no abstracts in English
Lin, M.; Kumagai, Yuta; Muroya, Yusa*; Katsumura, Yosuke; Lampre, I.*; Coudert, F.*; Boutin, A.*; Mostafavi, M.*
no journal, ,
In this work, we measure the absorption spectra of hydrated electron in DO solutions containing different concentrations of Li
and Mg
cations at various temperatures by pulse radiolysis techniques, and perform quantum classical molecular dynamics (QCMD) simulations to explain the shift of the absorption spectra due to the combined effects of temperature and salt concentration.
Muroya, Yusa*; Lin, M.; Han, Z.*; Kumagai, Yuta; Lampre, I.*; Mostafavi, M.*; Katsumura, Yosuke
no journal, ,
In this work, we have studied the yield of solvated electron in ethylene glycol, 1,2-propanediol and 1,3-propanediol by electron beam radiation. Their time dependent behaviors in picosecond to microsecond range were also studied by a combination of picosecond and nanosecond pulse radiolysis techniques.
Lin, M.; Katsumura, Yosuke; Muroya, Yusa*; Fu, H.*; Yamashita, Shinichi; Mostafavi, M.*; Lampre, I.*
no journal, ,
The molar extinction coefficients at the absorption maximum of the solvated electron spectrum have been re-evaluated to be 9 000, 9 700, 10 000 and 10 600 M
cm for 1,2-ethanediol (12ED), 1,2-propanediol (12PD), and 1,3-propanediol (13PD) and glycerol (GLY), respectively. These values are two-thirds or three-fourths of the value usually reported in the published report. With these extinction coefficients, the time-dependent radiolytic yields of the solvated electron in these diols from the ps to the s time range are described. The radiolytic yield in these viscous solvents is found to be strongly different from that of the aqueous solution. The temperature dependent absorption spectra of the solvated electron in 12ED, 12PD, 13PD, and GLY have also been investigated. In all these solvents, the optical spectra shift to the red with increasing temperature. The results, together with those of fs photochemistry studies carried out in Prof. Mostafavi's group, suggest that the solvation dynamics of electrons in these poly-ols is strongly related to the structure, especially the concentration of OH group.
Lin, M.; Katsumura, Yosuke*; Muroya, Yusa*; Yan, Y.*; Han, Z.*; Mostafavi, M.*; Lampre, I.*
no journal, ,
The temperature dependent absorption spectra of solvated electrons in some simple alcohols and four poly-alcohols, 1,2-ethanediol, 1,2-propanediol, 1,3-propanediol, and glycerol, have been systematically investigated by nanosecond pulse radiolysis techniques. The effects of molecular structure, especially the chain length and the number of OH group, on the absorption peak position are demonstrated. On the other hand, the temporal behaviours of solvated electron in methanol and the four poly-ols are studied by scavenging method and direct measurement using picosecond pulse radiolysis.
