Search Results - "Asaji, Tetsuo"
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Reoriention of diprotonated DABCO (1,4-Diazabicyclo[2.2.2]octane) cation and proton transfer in organic ferroelectric adduct DABCO-2(2-Chlorobenzoic acid)
Published in Journal of molecular structure (05-05-2018)“…Temperature dependences of 1H NMR as well as 35Cl NQR spin-lattice relaxation times T1 were investigated of a ferroelectric molecular adduct with Tc = 323 K,…”
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35Cl NQR Relaxation of the Molecular Ferroelectric 5,6-Dichloro-2-Methylbenzimidazole with Hydrogen-Bonded Molecular Chain
Published in Crystals (Basel) (21-01-2020)“…The 35Cl nuclear quadruple resonance (NQR) frequencies and spin-lattice relaxation times were measured in the temperature range of 4.2–420 K, of the…”
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Phase Transition and Cationic Motion in a Metal–Organic Perovskite, Dimethylammonium Zinc Formate [(CH3)2NH2][Zn(HCOO)3]
Published in Journal of physical chemistry. C (16-05-2013)“…The antiferroelectric phase transition of a metal–organic perovskite with a dimethylammonium cation, [(CH3)2NH2][Zn(HCOO)3], at T c = 156 K was investigated…”
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Reorientation of DABCO (1,4-diazabicyclo[2.2.2]octane) in halogen-bonded molecular complex DABCO-2(C6F5I)
Published in Journal of molecular structure (05-10-2018)“…Temperature dependence of 1H NMR spin-lattice relaxation time is investigated of a 1:2 molecular complex of DABCO (1,4-diazabicyclo[2.2.2]octane) and…”
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Halogen Bond as Controlling the Crystal Structure of 4‑Amino-3,5-Dihalogenobenzoic Acid and Its Effect on the Positional Ordering/Disordering of Acid Protons
Published in Crystal growth & design (03-12-2014)“…Crystal structures and thermal behaviors of 4-amino-3,5-dihalogenobenzoic acid (AXBA: X = Cl and I) were studied by single-crystal X-ray diffractometry and…”
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Dynamics of TEMPOL Radicals in TPP 1D Nanochannels and Different Molecular Orientation from Other TEMPO Derivatives
Published in Chemistry letters (05-07-2015)“…The molecular orientation and dynamics of 4-hydroxy-2,2,6,6-tetramethyl-1-piperidinyloxyl (TEMPOL) radicals in one-dimensional (1D) nanochannels of the crystal…”
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ESR Study of Molecular Orientation and Dynamics of Nitronyl Nitroxide Radicals in CLPOT 1D Nanochannels
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (10-07-2014)“…New inclusion compounds (ICs) were prepared using the organic 1D nanochannels of 2,4,6-tris(4-chlorophenoxy)-1,3,5-triazine (CLPOT) as a nanosized template and…”
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Proton dynamics in the hydrogen bonds of 4-amino-3,5-dihalogenobenzoic acid
Published in Chemical physics (18-08-2015)“…[Display omitted] •4-Amino-3,5-dichlorobenzoic acid has a symmetric dimer structure.•The compound undergoes a phase transition at 138K.•The symmetry breaking…”
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ESR study of molecular orientation and dynamics of TEMPO derivatives in CLPOT 1D nanochannels
Published in Magnetic resonance in chemistry (01-08-2016)“…The molecular orientations and dynamics of 2,2,6,6‐tetramethyl‐1‐piperidinyloxyl (TEMPO) radical derivatives with large substituent groups at the 4‐position…”
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Molecular Orientation and Dynamics of Different Sized Organic Radicals Included in Organic 1D Nanochannels
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (14-03-2013)“…The molecular orientation and dynamics of di-t-butylnitroxide (DTBN) and 4-oxo-2,2,6,6-tetramethyl-1-piperidinyl-1-oxyl (TEMPONE) radicals in the organic 1D…”
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Phase Transition and Ring-Puckering Motion in a Metal–Organic Perovskite [(CH2)3NH2][Zn(HCOO)3]
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (27-12-2012)“…Phase transitions in a metal–organic perovskite with an azetidinium cation, which exhibits giant polarizability, were investigated using differential scanning…”
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Molecular motion of imidazolium cations and phase transitions in (ImH)2KCo(CN)6 with double perovskite structure
Published in Chemical physics letters (01-07-2022)“…[Display omitted] •Phase transitions of (ImH)2KCo(CN)6 are related to ImH+ in-plane reorientation.•Low- and high-temperature phase transitions are of first and…”
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ESR study of the molecular orientation and dynamics of stable organic radicals included in the 1-D organic nanochannels of 2,4,6-tris-4-(chlorophenoxy)-1,3,5-triazine
Published in Magnetic resonance in chemistry (01-03-2012)“…The molecular orientation and dynamics of the organic stable radicals such as 2,2,6,6‐tetramethyl‐1‐piperidinyl‐1‐oxyl (TEMPO) or 4‐hydroxy‐TEMPO (TEMPOL)…”
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Molecular Motion of Azetidinium Ion and Phase Transition in [(CH2)3NH2]2KCo(CN)6 with Double Perovskite Structure
Published in Bulletin of the Chemical Society of Japan (15-06-2021)“…Molecular dynamics of azetidinium ion (AzH+), a four-membered-ring ammonium, in a cyano-bridged double perovskite compound (AzH)2KCo(CN)6 is studied by…”
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Preparation and Characterization of New Inclusion Compounds Using Stable Nitroxide Radicals and an Organic 1-D Nanochannel as a Template
Published in Materials (09-06-2010)“…A new inclusion compound (IC) using di-t-buthyl nitroxide (DBNO) radical and tris(o-phenylenedioxy)cyclotriphosphazene (TPP) (1), which has an organic…”
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Glassy behavior in a metal-organic perovskite, dimethylammonium zinc formate [(CH3)2NH2][Zn(HCOO)3]
Published in Solid state communications (01-12-2018)“…Proton spin-lattice relaxation was reinvestigated of a metal-organic perovskite [(CH3)2NH2][Zn(HCOO)3] in the low-temperature range down to 10 K, in order to…”
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Ring-Puckering Motion of Azetidinium Cations in a Metal–Organic Perovskite [(CH2)3NH2][M(HCOO)3] (M = Zn, Mg)A Thermal and 1H NMR Relaxation Study
Published in Journal of physical chemistry. C (21-02-2019)“…A metal–organic perovskite which consists of four-membered-ring ammonium (azetidinium), magnesium, and formate ions [(CH2)3NH2][Mg(HCOO)3] was synthesized…”
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35Cl NQR study of deuteration effect on proton dynamics in chlorobenzoic acid
Published in Journal of molecular structure (05-11-2017)“…35Cl NQR frequencies and spin-lattice relaxation times T1 were measured of some deuterated chlorobenzoic acid, 3,5-dichlorobenzoic acid-d1 (35ClBA-d1),…”
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NQR application to the study of hydrogen dynamics in hydrogen-bonded molecular dimers
Published in Hyperfine interactions (01-12-2016)“…The temperature dependences of 1 H NMR as well as 35 Cl NQR spin-lattice relaxation times T 1 were investigated in order to study the hydrogen transfer…”
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