Search Results - "Yatsuhashi, Tomoyuki"

Synthesis of Single-Nanometer-Sized Gold Nanoparticles in Liquid–Liquid Dispersion System by Femtosecond Laser Irradiation by Okamoto, Takuya, Nakamura, Takahiro, Sakota, Kenji, Yatsuhashi, Tomoyuki

“…Gold nanoparticles (AuNPs) show unique optical properties and catalytic activities, and their synthesis from gold ions has been widely studied. One of the…”
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Definitive production of intact organic pentacation radical: Octafluoronaphthalene ionized in intense femtosecond laser fields by Kitashoji, Akihiro, Yatsuhashi, Tomoyuki

“…[Display omitted] •The presence of pentacation radical is confirmed by its m/z and isotopic structure.•The asymptotic relative ion yields are obtained at high…”
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The Smallest Aromatic Tetracation Produced in Gas Phase by Intense Femtosecond Laser Pulses by Kitashoji, Akihiro, Fujihara, Akimasa, Yoshikawa, Taiki, Yatsuhashi, Tomoyuki

“…We report the production of the long-lived hexafluorobenzene tetracation, which is the smallest aromatic tetracation ever investigated, by 0.8 µm femtosecond…”
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Eluent-assisted Nonresonant Multiphoton Ionization of Polycyclic Aromatic Hydrocarbons in a Liquid Chromatograph-mass Spectrometer by Oya, Naoki, Yatsuhashi, Tomoyuki

“…A sub-nanosecond visible laser coupled with a liquid chromatograph is utilized for atmospheric pressure laser ionization (APLI). We reveal that the range of…”
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Charge Transfer and Metastable Ion Dissociation of Multiply Charged Molecular Cations Observed by Using Reflectron Time‐of‐Flight Mass Spectrometry by Kitashoji, Akihiro, Kitagawa, Kosei, Fujihara, Akimasa, Yatsuhashi, Tomoyuki

“…A multiply charged molecule expands the range of a mass window and is utilized as a precursor to provide rich sequence coverage; however, reflectron…”
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Synthesis of Fluorine‐Doped Hydrophilic Carbon Nanoparticles from Hexafluorobenzene by Femtosecond Laser Pulses by Okamoto, Takuya, Mitamura, Koji, Hamaguchi, Tomoyuki, Matsukawa, Kimihiro, Yatsuhashi, Tomoyuki

“…We report on the preparation and characterization of fluorine‐doped hydrophilic carbon nanoparticles by the exposure of hexafluorobenzene or a…”
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Charge-Dependent Metastable Dissociations of Multiply Charged Decafluorobiphenyl Formed by Femtosecond Laser Pulses by Kitagawa, Kosei, Fujihara, Akimasa, Yatsuhashi, Tomoyuki

“…Femtosecond laser ionization is a unique means to produce multiply charged organic molecules in the gas phase. The charge-dependent chemical reactions of such…”
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Multiple strong field ionization of metallocenes: Applicability of ADK rates to the production of multiply charged transition metal (Cr, Fe, Ni, Ru, Os) cations by Murakami, Eri, Mizoguchi, Ryuji, Yoshida, Yusuke, Kitashoji, Akihiro, Nakashima, Nobuaki, Yatsuhashi, Tomoyuki

“…[Display omitted] •Multiply charged transition metal cations up to 8+ are produced from metallocenes.•Singly charged metal cations liberated from the excited…”
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Anisotropic Coulomb Explosion of CO Ligands in Group 6 Metal Hexacarbonyls: Cr(CO)6, Mo(CO)6, W(CO)6 by Tanaka, Hiroki, Nakashima, Nobuaki, Yatsuhashi, Tomoyuki

“…Multiple ionization and subsequent Coulomb explosion have been studied for many organic molecules and their clusters; however, the metal complexes,…”
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Effects of Ligand and Solvent on the Synthesis of Iron Oxide Nanoparticles from Fe(acac)3 Solution by Femtosecond Laser Irradiation by Okamoto, Takuya, Nakamura, Takahiro, Tahara, Yuhei O., Miyata, Makoto, Sakota, Kenji, Yatsuhashi, Tomoyuki

“…Synthesis of iron oxide nanoparticles (Fe-O NPs) from iron(III)acetylacetonate solution by femtosecond laser irradiation is reported. Fe-O NPs and carbon are…”
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Synthesis of iron-based nanoparticles from ferrocene by femtosecond laser irradiation: Suppression of the particle growth in a mixture of water and hexane by Horikawa, Yuki, Okamoto, Takuya, Nakamura, Takahiro, Tahara, Yuhei O., Miyata, Makoto, Ikeda, Shingo, Sakota, Kenji, Yatsuhashi, Tomoyuki

“…[Display omitted] •Iron-based nanoparticles (mean diameter ca. 7 nm) are obtained without dispersants or centrifugation.•Size of nanoparticles is independent…”
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Formation and Fragmentation of Quadruply Charged Molecular Ions by Intense Femtosecond Laser Pulses by Yatsuhashi, Tomoyuki, Nakashima, Nobuaki

“…We investigated the formation and fragmentation of multiply charged molecular ions of several aromatic molecules by intense nonresonant femtosecond laser…”
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Selection of a Single Isotope of Multiply Charged Xenon (AXez+, A=128–136, z=1–6) by Using a Bradbury–Nielsen Ion Gate by Kitashoji, Akihiro, Yoshikawa, Taiki, Fujihara, Akimasa, Kamamori, Takaaki, Nashima, Shigeki, Yatsuhashi, Tomoyuki

“…The inclusion of an ion gate in a tandem mass spectrometer allows a specific precursor ion to be selected, and the fragment ions are then used for structure…”
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Dissociation and Multiply Charged Silicon Ejection in High Abundance from Hexamethyldisilane by Yatsuhashi, Tomoyuki, Nakashima, Nobuaki

“…Quadruply charged, neon-like silicon and helium-like carbon were generated by the exposure of hexamethyldisilane to intense femtosecond laser pulses…”
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Novel Method of Producing Carbon Nanoparticles on Benzene/Water Interface with Femtosecond Laser Plasma Filament by Yatsuhashi, Tomoyuki, Uchida, Naoko, Nishikawa, Kayo

“…The irradiation of NIR femtosecond laser pulses to a benzene/water bilayer dramatically enhanced the formation of carbon nanoparticles compared with that in…”
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Reduction of Yb(III) to Yb(II) by Two-Color Two-Photon Excitation by Nakashima, Nobuaki, Yamanaka, Ken-ichi, Yatsuhashi, Tomoyuki

“…Ytterbium 3+ ions in alcohol were found to be reduced to the corresponding 2+ ions upon laser irradiation with a stepwise two-color two-photon excitation. The…”
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Coulomb Explosion of Dichloroethene Geometric Isomers at 1 PW cm–2 by Yatsuhashi, Tomoyuki, Nakashima, Nobuaki, Azuma, Juri

“…Strikingly different Coulomb explosion behavior under intense laser fields is shown between the cis and trans geometric isomers of dichloroethene using 40-fs…”
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Reduction of Sm3+ to Sm2+ by an Intense Femtosecond Laser Pulse in Solution by Nishida, Daisuke, Yamade, Eriko, Kusaba, Mitsuhiro, Yatsuhashi, Tomoyuki, Nakashima, Nobuaki

“…Samarium 3+ ions in methanol were found to be reduced to the corresponding 2+ ions upon irradiation with intense femtosecond laser pulses. The reduction was…”
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Linear Response of Multiphoton Reaction: Three-Photon Cycloreversion of Anthracene Biplanemer in Solution by Intense Femtosecond Laser Pulses by Yatsuhashi, Tomoyuki, Nakahagi, Yuki, Okamoto, Hideki, Nakashima, Nobuaki

“…The photocycloreversion of anthracene photodimers and biplanemer in solution was investigated by nonresonant intense femtosecond laser pulses. Cycloreversion…”
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Ionization of Anthracene Followed by Fusion in the Solid Phase under Intense Nonresonant Femtosecond Laser Fields by Yatsuhashi, Tomoyuki, Nakashima, Nobuaki

“…Fused anthracene cation and a series of anthracene−C n H m cluster-like products were observed on irradiation with nonresonant femtosecond pulses at 1.4 μm…”
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