bluuebunny/crossref_metadata_2025_split huggingface dataset:
An Improved Ion-exchanger Colorimetry for the Determination of a Trace Amount of Phosphate
Authors: Matsuhisa Kiichi , Ohzeki Kunio , Kambara Tomihito 
Published: July 2006

Abstract
A highly sensitive and selective method has been developed for the determination of a trace amount of phosphate. It is based on the concentration of phosphate as the familiar molybdenum blue complex on the coagulated material prepared from finely divided anion and cation exchangers, collection of the mixed resin on a filter paper, and the subsequent measurement of the absorbance of the complex on the resulting thin layer of resin phase. The calibration curve shows a good proportionality in the concentration range of 1 to 6 μg P1−1. The absorbance corresponding to 1 μg P1−1 is 0.095. The method is successfully applied to the determination of phosphate in a tap water and a river water.
Preparation and Electronic Spectra of Dichlorobis(1,10-phenanthroline)molybdenum(III) and Dichlorobis(2,2′-bipyridine)molybdenum(III) Ions
Authors: Morita Tomoji S , Sasaki Yoichi , Saito Kazuo 
Published: July 2006

Abstract
A preparation method of pure crystalline salts, cis-[MoCl2(phen)2]X (phen, 1,10-phenanthroline; X−=Cl−, Br−, CH3C6H4SO3−) and cis-[MoCl2(bpy)2]Cl (bpy, 2,2′-bipyridine), has been established. They are stable in solid state under oxygen- and moisture-free conditions. They deteriorate within one hour in water at room temperature, but are much more stable in various organic solvents free from oxygen. In the visible region, two absorption peaks were observed in methanol at 21510 cm−1 (ε=2570 dm3 mol−1 cm−1) and 26740 cm−1 (ε=4420 dm3 mol−1 cm−1) for the phen complex, and one broad peak at 22820 cm−1 (ε=3630 dm3 mol−1 cm−1) for the bpy complex, which are assigned to the metal-to-ligand d-π* charge transfer transition.
Isomers of Tris[(R)-1-phenyl-1,2-ethanediamine]- and Tris[(S)-3,3-dimethyl-1,2-butanediamine]cobalt(III), and the Related Complexes
Authors: Kojima Masaaki , Fujita Junnosuke 
Published: July 2006

Abstract
The [Co{(R)-1-phenyl-1,2-ethanediamine}3]3+ complex yielded all of the four possible isomers, mer-Δ(lel3), mer-Λ(ob3), fac-Δ(lel3), and fac-Λ(ob3), while the [Co{(S)-3,3-dimethyl-1,2-butanediamine}3]3+ complex gave only two isomers of merΛ-(lel3) and fac-Λ(lel3). Two isomers, Λ(lel3) and Δ(ob3) of the [Co{(S,S)-2,3-butane-diamine}3]3+ complex were obtained. The formation ratios of these tris(1,2-diamine)cobalt(III) complexes were compared with those of the analogous complexes and discussed. The tetraammine complexes of all those diamines were also prepared. Absorption and circular dichroism spectra of all the complexes were recorded.
A Novel Ring-closure Reaction between 1,4-Dihydroxyanthraquinone and Diamines Promoted by Copper Ions
Authors: Takei Toshio , Matsuoka Masaru , Kitao Teijiro 
Published: July 2006

Abstract
The reaction of 1,4-dihydroxyanthraquinone(DHAQ, 1) with various diamines were carried out in the presence of CuCl2. Primary 1,2-ethylenediamines or 1,2-cyclohexanediamine afforded the ring-closure products, 6-hydroxy-1,2,3,4-tetrahydronaphtho[2,3-f]quinoxaline-7,12-dione derivatives, in good yields of 70–98%. On the other hand, in the cases of N-alkylethylenediamines or 2-(alkylamino)ethanols, the major products were the 2-aminated 1,4-dihydroxyanthraquinones. The direct 2-amination of 1 was greatly inhibited when an alkyl group was introduced to the amino group because of its steric requirement. The role of copper ions, the effect of a steric requirement of the N-alkyl substituent of amines, and the effect of the chain length of alkanediamines in the reaction of 1 with amines were studied. It was proposed that the reaction was initiated by the direct 2-amination of 1 via the copper complex, followed by the intramolecular nucleophilic substitution of the 2-amino group on the 2-alkylamino substituent to give the ring-closure product.
Aldol Reaction of Aluminium Enolate Resulting from 1,4-Addition of R2AlX to α,β-Unsaturated Carbonyl Compound. A 1-Acylethenyl Anion Equivalent
Authors: Itoh Akira , Ozawa Shuji , Oshima Koichiro , Nozaki Hitosi 
Published: July 2006

Abstract
Organoaluminium reagents R2AlX (X=SPh, SeMe) easily add to α,β-unsaturated carbonyl compounds in 1,4-fashion. The resulting aluminium enolates react with aldehydes to give aldol adducts in fair to good yields. Formal elimination of HX from the adducts provides α-substituted α,β-unsaturated carbonyl compounds. The overall transformation is an addition of aldehydes to 1-acylethenyl anion equivalent. Diethylaluminium iodide also is found to be an efficient reagent for the same type transformation.
5-Amino-1-vinyl-4,5-dihydro-1H-1,2,3-triazoles as a Source of 1-Amino-2-aza-1,3-butadiene
Authors: Nomura Yujiro , Takeuchi Yoshito , Tomoda Shuji , Ito Masato M 
Published: July 2006

Abstract
Thermolysis of 4,4-dimethyl-1-(1-phenylvinyl)-5-(1-pyrrolidinyl)-4,5-dihydro-1H-1,2,3-triazole gave 2-methyl-N-(1-phenylvinyl)-1-(l-pyrrolidinyl)-1-propanimine, which reacted as a 2-azabutadiene with electrondeficient dienophiles to afford the corresponding [4+2] cycloadducts. Reactivity and regioselectivity of the cycloaddition reactions were rationalized with the frontier molecular orbital treatment.
Electronic Properties and π-π* Absorption Spectrum of 2-Pyridone
Authors: Fujimoto Akira , Inuzuka Kozo , Shiba Ryuichi 
Published: July 2006

Abstract
The IR and U V absorption spectra as well as the Raman spectra of monomer and dimer of 2-pyridone were studied. The molecular weight of 2-pyridone in benzene and dimethyl sulfoxide was determined in order to examine the association. 2-Pyridone in nonpolar solvents shows two types of carbonyl stretching vibration bands due to the coexistence of the monomer and dimer. The highest wavelength UV absorption of 2-pyridone in isooctane (2,2,4-trimethylpentane) is ascribed to π-π* electronic transitions of the monomer and dimer. The dimer absorption band appears at a higher wavenumber than that of the monomer by ca. 830 cm−1. The dimer band corresponds to the π-π* transition from the ground 1Ag state to the excited 1Bu state. No π-π* transition absorption from the ground 1Ag state to the excited 1Ag state could be observed because of the g-g Laporte forbiddance in the transition under an assumption of the molecular C2h symmetry.
Photochemical Isomerization of 6,7-Dicyano- and 6,7-Bis(methoxycarbonyl)-3-phenylsulfonyl-(2,4-exo)-3-azatricyclo[3.2.1.02,4]oct-6-ene
Authors: Umano Katsumi , Koura Hiroto , Inoue Hiroo 
Published: July 2006

Abstract
The photochemical reactions of 6,7-bis(methoxycarbonyl)- and 6,7-dicyano-3-phenylsulfonyl-(2,4-exo)-3-azatricyclo[3.2.1.02,4]oct-6-ene afford the corresponding tetracyclic compounds (3b and 3c) by the skeletal isomerization, but those of their endo isomers do not result in the formation of 3b and 3c.
Synthesis of 2-Substituted 1,3-Butadienes by Cross-coupling Reaction of 2-(1,3-Butadienyl)magnesium Chloride with Alkyl or Aryl Iodides
Authors: Nunomoto Sadaaki , Kawakami Yuhsuke , Yamashita Yuya 
Published: July 2006

Abstract
The cross-coupling reactions of 2-(1,3-butadienyl)magnesium chloride (1) with aryl and alkyl iodides were investigated in the presence of transition metal catalysts. Tetrakis(triphenylphosphine)palladium(0) catalyzes the cross-coupling reactions of 1 with aryl iodides, and copper (I) iodide catalyzes the reaction with alkyl iodides. These cross-coupling reactions offer convenient routes for the synthesis of 2-substituted 1,3-butadienes.
A Simple Regioselective Partial Hydrolysis of Di-O-isopropylidene Monosaccharides with Copper(II) Ion
Authors: Iwata Masaaki , Ohrui Hiroshi 
Published: July 2006

Abstract
Copper(II) ion was found to be effective for regioselective removal of the 5,6-O-isopropylidene group of α-d-mannose and α-d-glucose derivatives in alcohols at ambient temperature.
The Synthesis of Phenyl Carboxylates from p-Bromophenol and Carboxylic Acids
Authors: Hashimoto Shizunobu , Furukawa Isao 
Published: July 2006

Abstract
The reaction of p-bromophenol with carboxylic acids in the presence of triphenylphosphine and triethylamine proceeded at a high temperature, with the elimination of hydrogen bromide, to give phenyl carboxylates and small amounts of p-bromophenyl carboxylates.
The Reaction of cyclo-Tetraphosphate with l-Valine
Authors: Tsuhako Mitsutomo , Fujita Naoko , Nakahama Akiko , Matsuo Tsuneo , Kobayashi Masamitsu , Ohashi Shigeru 
Published: July 2006

Abstract
cyclo-Tetraphosphate (P4m) reacted with l-valine at pH 12 to form a certain phosphorus-containing compound (Compound X). Compound X was obtained in amounts so small as about 3.2% at room temperature after 91 d and about 0.3% at 70 °C after 1 d. Based on the results of paper chromatography, anion-exchange chroma-tography, and IR spectroscopy, Compound X was proved to be the same orthophosphate derivative of valine, an anion of N-(1-carboxy-2-methylpropyl)phosphoramidic acid, as that formed by the reaction of cyclo-triphosphate (P3m) with l-valine. The mechanism of the reaction of P4m with l-valine was discussed.
Binuclear Metal Complexes. XL. Synthesis and Magnetic and Spectral Properties of Alkoxo-bridged Copper(II) Complexes with 2-(Alkylthio)ethanols
Authors: Mikuriya Masahiro , Okawa Hisashi , Kida Sigeo 
Published: July 2006

Abstract
Alkoxo-bridged copper(II) complexes with 2-(alkylthio)ethanols, Cu(RSCH2CH2O)X (R=CH3, C2H5, n-C3H7, i-C3H7, s-C4H9, t-C4H9; X=Br, Cl), have been prepared and characterized by elemental analyses, infrared and electronic spectra and magnetic susceptibilities (80–300 K). Based on the magnetic properties, these complexes were divided into three types, A, B, and C. Type A complexes show a strong antiferromagnetic interaction and exhibit a distinct absorption band characteristic of alkoxo-bridged structure in the 22–24×103 cm−1 region. Type B and C complexes follow the Curie-Weiss law. The former complexes show a ferromagnetic behavior, whereas the latter complexes show a weak antiferromagnetism. The results were compared with those of the complexes with 2-(dialkylamino)ethanols, Cu(R2NCH2CH2O)X.
The Preparation and Properties of Ethylenediamine(8-quinolinolato)cobalt(III) Complexes
Authors: Yamamoto Yoshihisa , Kataoka Reiko , Imahara Shinji , Amano Toshio 
Published: July 2006

Abstract
Bis(ethylenediamine)(8-quinolinolato)cobalt(III) chloride dihydrate and ethylenediaminebis(8-quinolinolato)cobalt(III) chloride dihydrate have been isolated and characterized. The 1H-NMR spectrum of the latter complex indicates that the two oxygen atoms of the coordinated 8-quinolinolato ligands are in the cis positions.
Binuclear Metal Complexes. XLI. Crystal Structure and Unusual Magnetic Property of Isothiocyanato{2-[2-(dimethylamino)ethylthio]ethanolato}copper(II)
Authors: Mikuriya Masahiro , Okawa Hisashi , Kida Sigeo 
Published: July 2006

Abstract
A binuclear copper(II) complex, isothiocyanato{2-[2-(dimethylamino)ethylthio]ethanolato}copper(II), (Cu(CH3-nso)NCS), was prepared and characterized by elemental analysis, infrared and electronic spectra, magnetic susceptibility (90–300 K), and single-crystal X-ray diffraction. The complex exhibits a band at 25×103 cm−1 characteristic of alkoxo-bridged structure. The temperature dependence of the magnetic susceptibility is unusual and shows a dramatic change in the temperature range 240–180 K. The magnetic data were fitted to the Bleaney-Browers equation separately in the two temperature ranges (−2J=535 cm−1 for 300≥T≥240 K; −2J=595 cm−1 for 170≥T≥90 K).
Crystal Structure and Absolute Configuration of d-Tartaric Acid-(+)500CD-Tris(2-aminoethanesulfenato)cobalt(III)–Water (1/1/1)
Authors: Kita Masakazu , Yamanari Kazuaki , Kitahama Katsuki , Shimura Yoichi 
Published: July 2006

Abstract
The crystal structure and absolute configuration of diastereomeric molecular compound, d-C4H6O6·(+)500CD[Co{S(O)CH2CH2NH2}3]·H2O, were determined by the X-ray diffraction method. The crystals are orthorhombic with space group P212121, Z=4, and a=13.034(4), b=13.559(6), and c=11.048(8) Å. The rifinement of 1724 reflections (Mo Kα radiation) led to R=0.068. The complex molecule has the configuration fac(S)-Λ-(δ,δ,δ)-(R, R, R). All amino groups and the sulfenato oxygen atoms form hydrogen bonds with d-tartaric acid and/or water molecules three-dimensionally, which is responsible for the formation of the novel diastereomeric molecular compound.
Cobalt(III) Complexes with Tripodlike Quadridentate Ligands. I. Circular Dichroism Spectra of Quasi-enantiomeric Geometrical Isomers of [Co(tripod)(chiral bidentate)]-type Complexes
Authors: Akamatsu Keiji , Komorita Takashi , Shimura Yoichi 
Published: July 2006

Abstract
Cobalt(III) complexes containing a tripodlike quadridentate ligand, tris(2-aminoethyl)amine or nitrilotriacetate, and a chiral bidentate, l-amino carboxylate or (R)-propylenediamine, are prepared and separated into their respective geometrical isomers. The two geometrical isomers have mutually quasi-enantiomeric configurations. Circular dichroism spectra in the d-d absorption band region are discussed in connection with this novel type of geometrical isomerism.
Aromatic Nucleophilic Substitution. XV. Stopped-flow Kinetics of the Formation and Decomposition of 1,3- and 1,1-Disubstituted Meisenheimer Complexes in the Reactions of 1-Dialkylamino-2,4-dinitronaphthalenes with Potassium Methoxide in Dimethyl Sulfoxide-Methanol
Authors: Sekiguchi Shizen , Takei Toshio , Matsui Kohji , Tone Noboru , Tomoto Noboru 
Published: July 2006

Abstract
The formation of 1,3-disubstituted anionic σ complexes, followed by 1,1-disubstituted ones was confirmed by means of absorption and NMR spectra in the reactions of 1-dialkylamino-2,4-dinitronaphthalenes with potassium methoxide in DMSO-CH3OH. The rates and activation parameters were determined by kinetic studies with use of stopped-flow and conventional spectrophotometers. The rate constants for the formation of 1,3-disubstituted one decreased in the order 1-dimethylamino-&gt;1-(N-methylbutyl)amino-&gt;1-piperidino-&gt;1-diethylamino-2,4-dinitronaphthalenes, those for its decomposition being comparable with each other. On the other hand, the rate constant for the formation of 1,1-disubstituted one decreased in the same order as above while that for its decomposition decreased in the order 1-dimethylamino-&gt;1-(N-methylbutyl)amino-&gt;1-diethylamino-&gt;1-piperidino-2,4-dinitronaphthalenes. The mechanism was discussed from activation parameters.
Amino Sugars. XXXII. Ammonolysis and Azidolysis of Benzyl 2,3-Anhydro-4-azido-4-deoxypentopyranosides
Authors: Hashimoto Hironobu , Araki Koichi , Yoshimura Juji 
Published: July 2006

Abstract
Ammonolysis and azidolysis of four benzyl 2,3-anhydro-4-azido-4-deoxypentopyranosides of α-d-lyxo, α-d-ribo, β-l-lyxo, and β-l-ribo configurations, were studied. Ratios of two ring-opening isomers and relative reaction rates were determined, factors controlling the direction of ring opening being discussed.
The Reaction of Alkyl 3-Alkoxy-2-bromopropanoate with Triethyl Phosphite
Authors: Okamoto Yoshiki , Tone Tsutomu , Sakurai Hiroshi 
Published: July 2006

Abstract
Alkyl 3-alkoxy-2-bromopropanoate reacted with triethyl phosphite to give alkyl 2,3-bis(diethoxyphosphinyl)propanoate as the major product.
Photo-induced Radical Rearrangements of Hypoiodite of N-Acetyljervine and the Related C-nor-D-Homosteroid in the Presence of Mercury(II) Oxide and Iodine
Authors: Suginome Hiroshi , Kato Kimitoshi , Masamune Tadashi 
Published: July 2006

Abstract
Irradiation of the hypoiodite of N-acetyljervine in benzene containing mercury(II) oxide and iodine gave a mixture of products. The major product was N-acetyl-11-oxojerva-5,12(13)-dien-3β-yl N-acetyl-A-homo-4-oxa-11-oxojerva-5,12(13)-dien-3α-yl ether (4) (25%). Four minor products, N-acetyl-2-iodo-11-oxo-A-nor-2,3-secojerva 5,12(13)-dien-3-yl formate, N-acetyl-3α,5-epoxy-6α-iodo-A-homo-4-oxa-5α-jerva-5,12(13)-dien-11-one, N-acetyl-4-oxajerva-5,12(13)-dien-11-one, and N-acetyl-4-oxa-A-homojerva-5,12(13)-diene-3,11-dione, were also isolated. Irradiation of the hypoiodite of 3β-hydroxy-17-ethyletiojerv-5-ene-11,20-dione also gave a dimer corresponding to 4. The formation of 4 as the major product contrasts with the result of the corresponding reaction of cholesterol.
Studies of Reactions of Amines with Sulfur Trioxide. VI. Thermal Reactions of Anilinium, Dimethylanilinium, and Trimethylanilinium Salts of Butylamidosulfuric Acid
Authors: Kanetani Fujio , Yamaguchi Hachiro 
Published: July 2006

Abstract
When the title compounds were heated in an evacuated reaction vessel, both transsulfonation and rearrangement occurred. At lower temperatures (80–120 °C) the corresponding phenylamidosulfates and sulfophenylamidosulfates (transsulfonation products) were the main products. Increasing temperature led to the formation of ring mono- and disulfonates (rearrangement products) at the expense of the transsulfonation products. The sulfonate group always migrated to the ortho and/or para position(s) to the amino group. In no case was any meta-product detected. There was no significant difference in the ease of transsulfonation among the anilinium salts studied except 2,6-dimethyl- and 2,4,6-trimethylanilinium salts. On the other hand, the ease of rearrangement and the orientation of ring sulfonation depended strongly on the structure of the substrate anilines. The thermal reactions of 2,4,6-trimethylanilinium butylamidosulfate produced (2,4,6-trimethylphenylimido)bis(sulfate) in addition to (2,4,6-trimethylphenylamido)sulfate. This is the first isolation of an arylimidobis(sulfate) from such reactions. Mechanisms of the transsulfonation and the rearrangement have been discussed.
The Mechanism of the Reaction of (Aryloxy)trimethylstannane with Benzyl Bromide giving Aryl Benzyl Ether
Authors: Kozuka Seizi , Kikuchi Akihiko , Yamaguchi Shigeru 
Published: July 2006

Abstract
A kinetic study has been performed for the reaction of (aryloxy)trimethylstannane with benzyl bromide giving aryl benzyl ether and bromotrimethylstannane. Bimolecular nucleophilic attack of the aryloxy-oxygen on the benzyl-carbon has been suggested for the reaction based on the substituent effect.
The Binding of Sodium Dodecyl Sulfate to Lysozyme in Aqueous Solutions
Authors: Fukushima Kohsuke , Murata Yoshio , Nishikido Nagamune , Sugihara Gohsuke , Tanaka Mitsuru 
Published: July 2006

Abstract
The binding mode of sodium dodecyl sulfate to lysozyme and the accompanying structural change of lysozyme by binding have been investigated by means of the binding isotherm, the precipitation curve, and the CD spectra in pure water, NaCl, and borate buffer solutions. The precipitation phenomena could be explained in terms of the neutralization of the net charge of lysozyme due to dodecyl sulfate-ion binding. The analysis of the binding isotherms by the use of the BET equation gave the site number of the first layer corresponding to the positively charged residues at the pH studied. The conformational change from the β-structure to the α-helix has been observed in the second-layer binding. The environmental change of the side-chain residues has also been observed.
The Temperature Dependence of the Localization and Scavenging of Electrons in a Glassy 2-Methyltetrahydrofuran Matrix
Authors: Yoshizaki Masato , Ogasawara Masaaki , Yoshida Hiroshi 
Published: July 2006

Abstract
The nature and behavior of localized electrons in a γ-irradiated 2-methyltetrahydrofuran matrix were studied at 4 and 77 K by optical absorption measurements. Electrons localized in shallow traps generated at 4 K in a neat matrix showed one broad peak with εmax of 1.2×104 mol−1 dm3 cm−1 at 1490 nm. The yield was 1.9 (for 100 eV energy absorbed). This yield is less than the yield of electrons localized in deep traps at 77 K, 2.6. With an increasing concentration of biphenyl added to the matrix, the localized electrons were completely transformed into biphenyl anions. The scavenging efficiency was twice as high at 4 K as at 77 K. These results indicated that the electron scavenging took place by tunneling of the once localized electrons.
Selective Separation of Cr(VI) from Cr(III) in Seawater by Cobalt-1-pyrrolidinecarboditioate Coprecipitation Method
Authors: Fujiwara Kitao , Toda Shozo , Fuwa Keiichiro 
Published: July 2006

Abstract
Specific coprecipitation of Cr(VI) in artificial seawater with Co(II)–APDC complex was investigated. The maximum recovery by coprecipitation was 60.6±4.54% at pH 2 in which Cr(III) was completely separated from Cr(VI).
Potentiometric and Spectroscopic Investigations of the Reaction of Fluorescein Isothiocyanate with an Amine Chemically Bound on Solid Surfaces
Authors: Yamamoto Naoto , Nagasawa Yoshikatsu , Shuto Sadanobu , Tsubomura Hiroshi 
Published: July 2006

Abstract
Titanium electrode surface was chemically modified with an aminosilane. The potential of the electrode was shifted to the negative direction by a reaction of fluorescein isothiocyanate in solution with the amine on the electrode surface. The absorption and emission spectra were measured for the fluorescein isothiocyanate, fixed by the reaction with the aminosilane which was chemically bound on the surfaces of tin oxide, titanium oxide and quartz, in solutions and in air. In an alkaline solution, the absorption and emission spectra showed the band ascribable to the dianion of the fluorescein. A peak, attributable to the monoanion, was observed in both absorption and emission spectra measured for the samples kept in air. The surface coverage of the dye was estimated from the absorbances to be about 10−6 mol m−2 for both tin oxide and quartz. The bound dye fluoresced under exposure to ultraviolet light, due probably to the energy transfer from tin oxide to the dye.
The Disproportionation of Dimethyldialkoxysilanes Catalyzed by Iodine Monobromide
Authors: Ibaraki Takeshi , Ito Katsuko 
Published: July 2006

Abstract
Iodine monobromide is an extremely effective catalyst for the redistribution of alkoxyl groups on silicon atoms in dimethyldiakoxysilanes. The equilibrium constants of these reactions were determined at 40 °C by means of gas chromatography. Assuming that the reaction intermediate is the dative form of a dimethyldialkoxysilane–iodine monobromide complex, a mechanism of the reaction was proposed.
Mechanisms of Light-initiated Redox Reactions of Copper(II)–Cyclic Polyamine Surfactant Assemblies
Authors: Moroi Yoshikiyo 
Published: July 2006

Abstract
Photo-induced reduction of Cu2+ ion by organic electron donors was studied, main attention being paid to the decay kinetics of the cationized donor using two kinds of Cu2+ ions; one is free to move around the micellar surface of copper(II) dodecyl sulfate(Cu(DS)2), the other being fixed in a cyclic polyamine, Cu2+ complex of 2-tetradecyl-1,4,7,10-tetraazacyclododecane (CPA). Sodium 12-(10-phenothiazinyl)dodecanesulfonate (PTHDS) functions quite similarly to N-methylphenothiazine (MPTH) in an electron transfer reaction in Cu(DS)2 micelles, and the reduced Cu+ is ejected from the micelles. In the MPTH–CPA system, MPTH+ is completely ejected from the host micelle in the CPA micellar system. In consequence, the decay of the cationized donor obeys a second-order rate law, while the rate constant becomes much less. In PTHDS–CPA micellar system, on the other hand, the kinetics of the cationized donor is a superposition of two first-order decays of different rate constants, which suggests that the cationized donor can not escape into an intermicellar bulk phase due to the hydrophobic interaction between the long alkyl chain and its host micelle. A similar decay was also observed in the mixed micelles of the polyamine and hexadecyltrimethylammonium bromide.