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71.
S. Osaki Y. Tagawa T. Chijiiwa S. Sugihara Y. Maeda 《Journal of Radioanalytical and Nuclear Chemistry》1999,239(3):543-547
Extraction of actinides like neptunium, plutonium and americium have been performed using polyphosphine polyoxides. Phosphorus
compounds with (O)PCP(O) linkage exhibit very high liquid-liquid extraction properties. They demonstrate also quantitative
and selective transport properties of some actinides by supported liquid membrane (SLM) technology. 相似文献
72.
This paper overviews the present state of understanding on properties of the electrode material LiCoO2 as well as the impact of these properties on the electrode performance in lithium batteries. The properties that are important
for applications, such as structure, non-stoichiometry, defect chemistry and related electrical properties are considered. 相似文献
73.
The 29th domestic Chemical Society of Japan Symposium on Heteroatom Chemistry was held in Hiroshima during the period of December 12–14, 2002, under the management of Tetsuo Otsubo of Hiroshima University. About 250 chemists from various academic institutes and industries enjoyed four plenary lectures, 44 oral presentations, and 53 poster presentations. © 2003 Wiley Periodicals, Inc. Heteroatom Chem 14:387–398, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/hc.10186 相似文献
74.
75.
On leaving 4,4′‐dithiodimorpholine 6 powder undisturbed at room temperature over 10 years, it led to the formation of 4,4′‐tetrathiodimorpholine 7 . Reactions of 2′‐adamantylidene‐9‐benzonorbornenyidene 1 with 6, 7 , and 4,4′‐thiodimorpholine 8 and a Brønsted acid in CH2Cl2 at room temperature proceeded to afford the corresponding thiiranes, 2 and 3 . The order of reactivity of 4,4′‐oligothiodimorpholines combined with a Brønsted acid is 7 > 6 > 8 . The thiirane 3 was transformed to 1 and 2 under the reaction conditions. © 2009 Wiley Periodicals, Inc. Heteroatom Chem 20:12–18, 2009; Published online in Wiley InterScience ( www.interscience.wiley.com ). DOI 10.1002/hc.20505 相似文献
76.
Yoshiaki Sugimoto Nobuhiro Tsumori Shintaro Nomura Toshiharu Saiki 《Optical Review》2009,16(3):269-273
Near-field photoluminescence (PL) imaging spectroscopy was used to investigate multi-exciton and charged-exciton states confined
in a single GaAs interface fluctuation quantum dot. We determined the origin of peaks in the PL spectra by employing a wavefunction
mapping technique. We observed distortion of the exciton wavefunction due to the electric field produced by an excess electron
at a nearby confined state. Near-field wavefunction mapping was demonstrated to be a powerful tool for visualizing the local
environment, which affects the emission properties of quantum dots. 相似文献
77.
Makiko Asamoto Shinji Miyake Kazunari Sugihara Hidenori Yahiro 《Electrochemistry communications》2009,11(7):1508-1511
The anodic performances of Ni/CeO2–Sm2O3(Ni/SDC) modified by the addition of alkaline earth metal oxides (MgO, CaO, and SrO) were investigated for direct oxidation of CH4 in solid oxide fuel cells (SOFCs). Although the initial power density of cell with Ni/SDC anode modified by the addition of CaO was slightly lower than that of cell with Ni/SDC, the former anode exhibited an excellent stability compared to the latter one. Such a high stability of Ni–CaO/SDC anode may come from the inhibition of carbon deposition in addition to the retained ionic conductivity of anode. 相似文献
78.
Primus T Primus TM Kohler DJ Johnston JJ Sugihara RT Pitt WC 《Journal of chromatographic science》2006,44(1):1-5
A reversed-phase ion-pair liquid chromatographic analysis combined with a solid-phase extraction clean-up method is used to assess the quantity of diphacinone residue found in invertebrates. Three invertebrate species are exposed to commercially available diphacinone-fortified bait used for rat control. The invertebrate samples are collected, frozen, and shipped to the laboratory. The samples are homogenized after cryogenic freezing. A portion of the homogenized samples are extracted with acidified chloroform-acetone, followed by cleanup with a silica solid-phase extraction column. Diphacinone is detected by UV absorption at 325 nm after separation by the chromatographic system. The method limit of detection (MLOD) for snail and slug samples averaged 0.055 and 0.066 mg/kg, respectively. Diphacinone residues in snail tissue ranges from 0.83 to 2.5 mg/kg for Oxychilus spp. The mean recoveries from snails at 0.20 and 2.0 are 97 +/- 21% and 84 +/- 6%. Diphacinone residues in slug tissue ranges from 1.3 to 4.0 mg/kg for Deroceras laeve and < MLOD to 1.8 mg/kg for Limax maximus, respectively. The mean recoveries from slugs at 0.20 and 2.0 mg/kg are 91% +/- 15% and 86% +/- 5%. 相似文献
79.
Protons of N3, cis-bis(thiocyanato)bis(2,2'-bipyridyl-4,4'-dicarboxylic acid)ruthenium(II), were in situ exchanged on N3-loaded TiO2 films with alkali-metal, tetrabutylammonium, and guanidinium cations. This simple strategy improved the open-circuit photovoltage (V(oc)) significantly, resulting in enhancement of the power conversion efficiency by 10-25%. Electrochemical impedance spectra revealed that the in situ proton exchange of the N3-loaded film suppressed charge recombination between injected electrons and I(3-) ions in the electrolyte, which, together with the negative shift of the conduction band edge for TiO2, may account for the remarkably increased V(oc) upon proton exchange of N3. 相似文献
80.
Nakahara H Nakamura S Hiranita T Kawasaki H Lee S Sugihara G Shibata O 《Langmuir : the ACS journal of surfaces and colloids》2006,22(3):1182-1192
Surface pressure (pi)-, surface potential (deltaV)-, and dipole moment (mu(perpendicular))-area (A) isotherms and morphological behavior were examined for monolayers of a newly designed 18-mer amphiphilic alpha-helical peptide (Hel 13-5), DPPC, and DPPC/egg-PC (1:1) and their combinations by the Wilhelmy method, ionizing electrode method, fluorescence microscopy (FM), and atomic force microscopy (AFM). The newly designed Hel 13-5 showed rapid adsorption into the air-liquid interface to form interfacial films such as a SP-B function. Regardless of the composition and constituents in their multicomponent system of DPPC/egg-PC, the collapse pressure (pi(c); approximately 42 mN m(-1)) was constant, implying that Hel 13-5 with the fluid composition of egg-PC is squeezed out of Hel 13-5/DPPC/egg-PC monolayers accompanying a two- to three-dimensional phase transformation. FM showed that adding a small amount of Hel 13-5 to DPPC induced a dispersed pattern of ordered domains with a "moth-eaten" appearance, whereas shrinkage of ordered domains in size occurred for the DPPC/egg-PC mixture with Hel 13-5. Furthermore, AFM indicated that (i) the intermediate phase was formed in pure Hel 13-5 systems between monolayer states and excluded nanoparticles, (ii) protrusions necessarily located on DPPC monolayers, and (iii) beyond the collapse pressure of Hel 13-5, Hel 13-5 was squeezed out of the system into the aqueous subphase. Furthermore, hysteresis curves of these systems nicely resemble those of the DPPC/SP-B and DPPC/SP-C mixtures reported before. 相似文献