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Tsukada C, Tsuji T, Matsuo K, Nomoto T, Kutluk G, Sawada M, Ogawa S, Yoshida T, Yagi S. Spectroscopic and morphological studies on interaction between gold nanoparticle and liposome constructed with phosphatidylcholine. ACTA ACUST UNITED AC 2015. [DOI: 10.1088/1757-899x/76/1/012001] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Tamenori Y. Electron yield soft X-ray photoabsorption spectroscopy under normal ambient-pressure conditions. JOURNAL OF SYNCHROTRON RADIATION 2013; 20:419-25. [PMID: 23592620 PMCID: PMC4034694 DOI: 10.1107/s0909049513003592] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2013] [Accepted: 02/05/2013] [Indexed: 05/23/2023]
Abstract
Ambient-pressure soft X-ray photoabsorption spectroscopy (XAS) was demonstrated to be applicable to the chemical analysis of hydrated transition-metal compounds. For this purpose, even under ambient-pressure conditions, electron yield detection XAS (EY-XAS), based on a simple drain-current set-up, was used to overcome a weakness in fluorescence yield detection XAS (FY-XAS), which does not give a pure soft XAS. The feasibility of EY-XAS was investigated and it was clarified that the EY-XAS under ambient-pressure conditions corresponds to the mixed data of the total EY and conversion EY spectra. Normal ambient-pressure EY-XAS analysis was applied to anhydrous (CoCl2) and to hydrated (CoCl2·6H2O) cobalt chloride at the Co L23-edge. The present measurements demonstrated the ability to unambiguously distinguish the different chemical states of cobalt ions, relying upon spectral differences that indicate octahedral/quasi-octahedral structural changes as a result of hydration/dehydration reactions.
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Affiliation(s)
- Yusuke Tamenori
- Japan Synchrotron Radiation Research Institute/SPring-8, 1-1-1 Kouto, Sayo, Hyogo 679-5198, Japan
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Adsorption Reaction of L-Cysteine on Au Nanoparticle Prepared by Solution Plasma. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2013. [DOI: 10.1380/ejssnt.2013.18] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Blum M, Odelius M, Weinhardt L, Pookpanratana S, Bär M, Zhang Y, Fuchs O, Yang W, Umbach E, Heske C. Ultrafast Proton Dynamics in Aqueous Amino Acid Solutions Studied by Resonant Inelastic Soft X-ray Scattering. J Phys Chem B 2012; 116:13757-64. [DOI: 10.1021/jp302958j] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- M. Blum
- Department of Chemistry, University of Nevada, Las Vegas, Nevada,
United States
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California, United States
- Experimentelle Physik
VII, Universität Würzburg, Würzburg, Germany
| | - M. Odelius
- Fysikum, Albanova University Center, Stockholm University, Stockholm, Sweden
| | - L. Weinhardt
- Department of Chemistry, University of Nevada, Las Vegas, Nevada,
United States
- Experimentelle Physik
VII, Universität Würzburg, Würzburg, Germany
| | - S. Pookpanratana
- Department of Chemistry, University of Nevada, Las Vegas, Nevada,
United States
| | - M. Bär
- Department of Chemistry, University of Nevada, Las Vegas, Nevada,
United States
- Solar Energy Research, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, Berlin, Germany
- Brandenburgische Technische Universität, Cottbus, Germany
| | - Y. Zhang
- Department of Chemistry, University of Nevada, Las Vegas, Nevada,
United States
| | - O. Fuchs
- Experimentelle Physik
VII, Universität Würzburg, Würzburg, Germany
| | - W. Yang
- Advanced Light Source, Lawrence Berkeley National Laboratory, Berkeley, California, United States
| | | | - C. Heske
- Department of Chemistry, University of Nevada, Las Vegas, Nevada,
United States
- Institute for Chemical
Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Karlsruhe, Germany
- ANKA Synchrotron
Radiation Facility, Karlsruhe Institute of Technology, Karlsruhe, Germany
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Tamenori Y, Morita M, Nakamura T. Two-dimensional approach to fluorescence yield XANES measurement using a silicon drift detector. JOURNAL OF SYNCHROTRON RADIATION 2011; 18:747-752. [PMID: 21862855 DOI: 10.1107/s0909049511027531] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 07/09/2011] [Indexed: 05/31/2023]
Abstract
The objective of this article is to describe the capability of a two-dimensional (2D) approach to X-ray absorption near-edge structure (XANES) measurement by means of a partial fluorescence yield (PFY) method. 2D-XANES measurements were achieved by using a silicon drift detector as an energy-dispersive fluorescence detector. The advantage of this technique is that it allows full surveys of X-ray fluorescence data that are lost in conventional PFY measurements. The availability of a map approach was demonstrated by applying it to XANES measurements in both a diluted (Mn-doped nano-diamond) and a concentrated (MnO crystal) manganese sample. The 2D approach clearly distinguished between the PFY spectra of Mn and O atoms, where absorption edges of both elements are close to each other. Further, the 2D approach extracted an unambiguous PFY spectrum of phosphorus in the XANES measurement of SS304 (P < 0.045 wt%).
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Affiliation(s)
- Y Tamenori
- Japan Synchrotron Radiation Research Institute/SPring-8, Kouto, Sayo, Japan.
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Adsorption Reaction of Amino Acid Molecule on Pd Thin Layer Surface Constructed by Nano-dots under Water Environment. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2011. [DOI: 10.1380/ejssnt.2011.289] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Tamenori Y. Development of a differential pumping system for soft X-ray beamlines for windowless experiments under normal atmospheric conditions. JOURNAL OF SYNCHROTRON RADIATION 2010; 17:243-249. [PMID: 20157278 DOI: 10.1107/s0909049509052571] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/21/2009] [Accepted: 12/07/2009] [Indexed: 05/28/2023]
Abstract
A novel design for a differential pumping system has been investigated. This system allows windowless experiments in a soft X-ray beamline under normal atmospheric conditions. The new design consists of an aperture-based four-stage differential pumping system, based on a simple model calculation. A prototype system with a total length of 600 mm was constructed to confirm the validity of the design concept. Relatively short conductance-limiting components allow easy installation and alignment of the system on a synchrotron beamline. The fabricated system was installed on a beamline to test the transmission of soft X-rays through atmospheric helium.
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Affiliation(s)
- Y Tamenori
- Japan Synchrotron Radiation Research Institute/SPring-8, Hyogo 679-5198, Japan.
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Spectroscopic Study on the Reaction of L-Cysteine in Rh(PVP) Nanoparticle Colloidal Solution. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2009. [DOI: 10.1380/ejssnt.2009.314] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Fabrication and characterization of Pd Nanoparticles. E-JOURNAL OF SURFACE SCIENCE AND NANOTECHNOLOGY 2006. [DOI: 10.1380/ejssnt.2006.258] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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