巻号一覧
42 巻 (2015)
- 4 号 p. 130-
- 3 号 p. 81-
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- 1 号 p. 1-
42 巻, 1 号
選択された号の論文の6件中1～6を表示しています
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巻頭言
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木村 隆良2015 年 42 巻 1 号 p. 1
発行日: 2015/01/30
公開日: 2022/11/20
ジャーナル フリーPDF形式でダウンロード (601K)
2014年度日本熱測定学会学会賞
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古賀 信吉2015 年 42 巻 1 号 p. 2-9
発行日: 2015/01/30
公開日: 2022/11/20
ジャーナル フリーKinetic analysis of the solid-state reactions using thermal analysis is one of the methodologies used as an important scientific tool in the present society for realizing sustainable development. The methodology was originated and developed by significant contributions by Japanese researchers. In this article, the basis and progress of the methodology are reviewed in view of three components, i.e., theory of solid-state reactions, technique of thermal analysis, and theory of kinetic calculation. Logic of the methodology is summarized in the light of the mutual correlation of the methodological components. Through examining the credibility and physico-chemical significance of the kinetic parameters determined as the results of kinetic analysis, present status of the practical application of the methodology is revealed. Further, possible applications of the methodology to complex solid-state reactions are discussed as exemplified by partially overlapping multistep reactions. Through such reviewing work, it is hoped to find guidelines of the successful kinetic analysis of the solid-state reactions and of the development of the methodology.抄録全体を表示PDF形式でダウンロード (3113K)
解説
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福岡 脩平, 中澤 康浩2015 年 42 巻 1 号 p. 10-16
発行日: 2015/01/30
公開日: 2022/11/20
ジャーナル フリーCharge transfer complexes of κ-BETS2FeX4 (X = Br, Cl) which consist of organic donor molecules(BETS) and magnetic anions(FeX4-) are fascinating systems to study the interplay between magnetism and (super)conductivity. They form segregate stacked crystal structures that BETS and FeX4- form different types of two dimensional layers separated with each other to form alternative layered structure. In these systems, π electrons in the BETS molecule layers behave as strongly correlated electron system and localized 3d electrons in FeX4- (S=5/2) molecule layers behave as low dimensional magnetic system. Due to the magnetic interaction between conducting π electrons and localized 3d electrons, which is called π-d interaction, the π electron system and the 3d electron system are coupled with each other. As a result, these compounds show various interesting conducting properties such as magnetic-field-induced superconductivity and coexistent state of long range magnetic ordering and superconductivity. In addition, it is also suggested that the influence of the π-d interaction appears in the magnetic properties in the 3d electron system. In order to discuss such novel electronic states of π-d interacting systems from the thermodynamic viewpoint, we performed field-angle-resolved heat capacity measurements. In this article, we show our recent results of thermodynamic studies of π-d interacting BETS salts.抄録全体を表示PDF形式でダウンロード (1532K) -
山下 博之2015 年 42 巻 1 号 p. 17-24
発行日: 2015/01/30
公開日: 2022/11/20
ジャーナル フリーInterest in cocrystals in the pharmaceutical industry has increased in recent years. Although a number of studies have reported that cocrystals can form by heating a physical mixture of two components, details surrounding heat-induced cocrystal formation remain unclear. Here, we attempted to clarify the thermal behavior of a physical mixture and cocrystal formation in reference to a binary phase diagram. Physical mixtures prepared using an agate mortar were heated using differential scanning calorimetry (DSC). Some mixtures were further analyzed using X-ray DSC and polarization microscopy. When a physical mixture consisting of two components which was capable of cocrystal formation was heated using DSC, an exothermic peak associated with cocrystal formation was detected immediately after an endothermic peak. In some combinations, several endothermic peaks were detected and associated with metastable eutectic melting, eutectic melting, and cocrystal melting. In contrast, when a physical mixture of two components which is incapable of cocrystal formation was heated using DSC, only a single endothermic peak associated with eutectic melting was detected. Using homogeneously-mixed fine particles in our study was crucial to eliciting the behavior noted in the binary phase diagrams.抄録全体を表示PDF形式でダウンロード (2403K) -
小林 広和2015 年 42 巻 1 号 p. 25-29
発行日: 2015/01/30
公開日: 2022/11/20
ジャーナル フリーCurrent topics in the thermogravimetric-differential thermal analysis (TG-DTA) of inclusion compounds (ICs) synthesized using one-dimensional (1-D) organic porous materials such as 2,4,6-tris-(4-chlorophenoxy)-1,3,5-triazine (CLPOT), and 4-X-phenylnitronylnitroxide (4-XPNN) radicals such as phenylnitronylnitroxide (PhNN) and p-nitrophenylnitronylnitroxide (p-NPNN), are reviewed. Each NN radical included in the CLPOT nanochannels with spacer molecules such as N-phenyl maleimide (N-PhMI) for dilution, or even without spacer molecules, was stable above ca. 200 °C, at which temperatures bulk PhNN or p-NPNN are usually decomposed. These results demonstrate that NN radicals can be included in CLPOT nanochannels and remain stable, even during electron spin resonance (ESR) spectroscopy at high temperatures up to 150 °C. Therefore, NN groups may be used as an ESR spin probe like many of the derivatives of 2,2,6,6-tetramethyl-1-piperidinyloxyl (TEMPO) to examine the local structure of crystalline/amorphous porous materials, polymers, and membranes.抄録全体を表示PDF形式でダウンロード (767K)
フロギストン
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2015 年 42 巻 1 号 p. 30-31
発行日: 2015/01/30
公開日: 2022/11/20
ジャーナル フリーPDF形式でダウンロード (612K)
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