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Susumu Arai - One of the best experts on this subject based on the ideXlab platform.
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CommuniCation—Alkyl-Chain-Length Dependence of Quaternary Ammonium Cation on Zn Deposition Morphology in Alkaline-Based Electrolytes
Journal of The Electrochemical Society, 2019Co-Authors: Masahiro Shimizu, Koichi Hirahara, Yuki Ishida, Susumu AraiAbstract:The Influence of alkyl chain length in quaternary Ammonium Cations on electrochemical Zn growth morphology in alkaline-based electrolytes was systematically investigated under constant current density. Mossy structures that typically developed at low current density were mitigated in an electrolyte with 1 mM octyltrimethylAmmonium chloride. By changing from octyl to decyl group in the surfactant, completely smooth deposition morphology was achieved. Electrochemical impedance spectroscopic analysis revealed that charge transfer resistance associated with Zn deposition increased with alkyl chain length. The obtained results indicate that bulky Ammonium Cations suppress excess electrodeposition due to the steric hindrance effect and thereby result in smooth morphology.
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communiCation alkyl chain length dependence of quaternary Ammonium Cation on zn deposition morphology in alkaline based electrolytes
Journal of The Electrochemical Society, 2019Co-Authors: Masahiro Shimizu, Koichi Hirahara, Yuki Ishida, Susumu AraiAbstract:The Influence of alkyl chain length in quaternary Ammonium Cations on electrochemical Zn growth morphology in alkaline-based electrolytes was systematically investigated under constant current density. Mossy structures that typically developed at low current density were mitigated in an electrolyte with 1 mM octyltrimethylAmmonium chloride. By changing from octyl to decyl group in the surfactant, completely smooth deposition morphology was achieved. Electrochemical impedance spectroscopic analysis revealed that charge transfer resistance associated with Zn deposition increased with alkyl chain length. The obtained results indicate that bulky Ammonium Cations suppress excess electrodeposition due to the steric hindrance effect and thereby result in smooth morphology.
Osamu Ito - One of the best experts on this subject based on the ideXlab platform.
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Photochemical Charge Separation in Supramolecular Phthalocyanine−Multifullerene Conjugates Assembled by Crown Ether-Alkyl Ammonium Cation Interactions
The journal of physical chemistry. A, 2010Co-Authors: Francis D'souza, Eranda Maligaspe, Atula S. D. Sandanayaka, Navaneetha K. Subbaiyan, Paul A. Karr, Taku Hasobe, Osamu ItoAbstract:Self-assembled phthalocyanine−multifullerene donor−acceptor conjugates have been formed by crown ether-Ammonium Cation dipole-ion binding strategy to probe the photochemical charge separation. To achieve this, phthalocyanine is functionalized to possess four 18-crown-6 moieties on the macrocycle periphery, whereas fullerene is functionalized to possess an alkyl Ammonium Cation of short and long chain lengths. Stable donor−acceptor conjugates accommodating multifullerene entities have been obtained by the crown ether-Ammonium Cation inclusion complexation. From the efficient fluorescence quenching of the zinc phthalocyanine by the bound fullerene entities, the rate constants of charge separation are evaluated to be slightly larger for closely held via shorter alkyl chain length fullerene, which are also larger compared to the earlier reported analogous zinc porphyrin−multifullerene conjugate. Nanosecond transient absorption studies yielded spectral signatures corresponding to both the phthalocyanine radica...
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photochemical charge separation in supramolecular phthalocyanine multifullerene conjugates assembled by crown ether alkyl Ammonium Cation interactions
Journal of Physical Chemistry A, 2010Co-Authors: Francis Dsouza, Eranda Maligaspe, Atula S. D. Sandanayaka, Navaneetha K. Subbaiyan, Paul A. Karr, Taku Hasobe, Osamu ItoAbstract:Self-assembled phthalocyanine−multifullerene donor−acceptor conjugates have been formed by crown ether-Ammonium Cation dipole-ion binding strategy to probe the photochemical charge separation. To achieve this, phthalocyanine is functionalized to possess four 18-crown-6 moieties on the macrocycle periphery, whereas fullerene is functionalized to possess an alkyl Ammonium Cation of short and long chain lengths. Stable donor−acceptor conjugates accommodating multifullerene entities have been obtained by the crown ether-Ammonium Cation inclusion complexation. From the efficient fluorescence quenching of the zinc phthalocyanine by the bound fullerene entities, the rate constants of charge separation are evaluated to be slightly larger for closely held via shorter alkyl chain length fullerene, which are also larger compared to the earlier reported analogous zinc porphyrin−multifullerene conjugate. Nanosecond transient absorption studies yielded spectral signatures corresponding to both the phthalocyanine radica...
Yusuke Kataoka - One of the best experts on this subject based on the ideXlab platform.
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an unprecedented up field shift in the 13c nmr spectrum of the carboxyl carbons of the lantern type dinuclear complex tba ru2 o2cch3 4cl2 tba tetra n butyl Ammonium Cation
Dalton Transactions, 2015Co-Authors: Yuya Hiraoka, Takahisa Ikeue, Hiroshi Sakiyama, Frederic Guegan, Dominique Luneau, Beatrice Gillon, Ichiro Hiromitsu, Daisuke Yoshioka, Masahiro Mikuriya, Yusuke KataokaAbstract:A large up-field shift (−763 ppm) has been observed for the carboxyl carbons of the dichlorido complex TBA[Ru2(O2CCH3)4Cl2] (TBA+ = tetra(n-butyl)Ammonium Cation) in the 13C NMR spectrum (CD2Cl2 at 25 °C). The DFT calculations showed spin delocalization from the paramagnetic Ru25+ core to the ligands, in agreement with the large up-field shift.
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An unprecedented up-field shift in the 13 C NMR spectrum of the carboxyl carbons of the lantern-type dinuclear complex TBA[Ru 2 (O 2 CCH 3 ) 4 Cl 2 ] (TBA + = tetra(n-butyl)Ammonium Cation)
Dalton Transactions, 2015Co-Authors: Yuya Hiraoka, Takahisa Ikeue, Hiroshi Sakiyama, Frederic Guegan, Dominique Luneau, Beatrice Gillon, Ichiro Hiromitsu, Daisuke Yoshioka, Masahiro Mikuriya, Yusuke KataokaAbstract:A large up-field shift (−763 ppm) has been observed for the carboxyl carbons of the dichlorido complex TBA[Ru2(O2CCH3)4Cl2] (TBA+ = tetra(n-butyl)Ammonium Cation) in the 13C NMR spectrum (CD2Cl2 at 25 °C). The DFT calculations showed spin delocalization from the paramagnetic Ru25+ core to the ligands, in agreement with the large up-field shift.
Masahiro Shimizu - One of the best experts on this subject based on the ideXlab platform.
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CommuniCation—Alkyl-Chain-Length Dependence of Quaternary Ammonium Cation on Zn Deposition Morphology in Alkaline-Based Electrolytes
Journal of The Electrochemical Society, 2019Co-Authors: Masahiro Shimizu, Koichi Hirahara, Yuki Ishida, Susumu AraiAbstract:The Influence of alkyl chain length in quaternary Ammonium Cations on electrochemical Zn growth morphology in alkaline-based electrolytes was systematically investigated under constant current density. Mossy structures that typically developed at low current density were mitigated in an electrolyte with 1 mM octyltrimethylAmmonium chloride. By changing from octyl to decyl group in the surfactant, completely smooth deposition morphology was achieved. Electrochemical impedance spectroscopic analysis revealed that charge transfer resistance associated with Zn deposition increased with alkyl chain length. The obtained results indicate that bulky Ammonium Cations suppress excess electrodeposition due to the steric hindrance effect and thereby result in smooth morphology.
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communiCation alkyl chain length dependence of quaternary Ammonium Cation on zn deposition morphology in alkaline based electrolytes
Journal of The Electrochemical Society, 2019Co-Authors: Masahiro Shimizu, Koichi Hirahara, Yuki Ishida, Susumu AraiAbstract:The Influence of alkyl chain length in quaternary Ammonium Cations on electrochemical Zn growth morphology in alkaline-based electrolytes was systematically investigated under constant current density. Mossy structures that typically developed at low current density were mitigated in an electrolyte with 1 mM octyltrimethylAmmonium chloride. By changing from octyl to decyl group in the surfactant, completely smooth deposition morphology was achieved. Electrochemical impedance spectroscopic analysis revealed that charge transfer resistance associated with Zn deposition increased with alkyl chain length. The obtained results indicate that bulky Ammonium Cations suppress excess electrodeposition due to the steric hindrance effect and thereby result in smooth morphology.
Yuya Hiraoka - One of the best experts on this subject based on the ideXlab platform.
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an unprecedented up field shift in the 13c nmr spectrum of the carboxyl carbons of the lantern type dinuclear complex tba ru2 o2cch3 4cl2 tba tetra n butyl Ammonium Cation
Dalton Transactions, 2015Co-Authors: Yuya Hiraoka, Takahisa Ikeue, Hiroshi Sakiyama, Frederic Guegan, Dominique Luneau, Beatrice Gillon, Ichiro Hiromitsu, Daisuke Yoshioka, Masahiro Mikuriya, Yusuke KataokaAbstract:A large up-field shift (−763 ppm) has been observed for the carboxyl carbons of the dichlorido complex TBA[Ru2(O2CCH3)4Cl2] (TBA+ = tetra(n-butyl)Ammonium Cation) in the 13C NMR spectrum (CD2Cl2 at 25 °C). The DFT calculations showed spin delocalization from the paramagnetic Ru25+ core to the ligands, in agreement with the large up-field shift.
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An unprecedented up-field shift in the 13 C NMR spectrum of the carboxyl carbons of the lantern-type dinuclear complex TBA[Ru 2 (O 2 CCH 3 ) 4 Cl 2 ] (TBA + = tetra(n-butyl)Ammonium Cation)
Dalton Transactions, 2015Co-Authors: Yuya Hiraoka, Takahisa Ikeue, Hiroshi Sakiyama, Frederic Guegan, Dominique Luneau, Beatrice Gillon, Ichiro Hiromitsu, Daisuke Yoshioka, Masahiro Mikuriya, Yusuke KataokaAbstract:A large up-field shift (−763 ppm) has been observed for the carboxyl carbons of the dichlorido complex TBA[Ru2(O2CCH3)4Cl2] (TBA+ = tetra(n-butyl)Ammonium Cation) in the 13C NMR spectrum (CD2Cl2 at 25 °C). The DFT calculations showed spin delocalization from the paramagnetic Ru25+ core to the ligands, in agreement with the large up-field shift.