2-4 相転移挙動合成した錯体の熱分解温度は熱重量示差熱測定（TG/D

2-4 相転移挙動
合成した錯体の熱分解温度は熱重量示差熱測定（TG/DTA）によって決定した。
なお5 %重量減少温度を熱分解温度として定義した。また偏光顕微鏡（POM）
観察および示差走査熱量測定（DSC）により相転移挙動を観察した。各錯体の
TG/DTA 曲線を図2-3，DSC 曲線を図2-4，偏光顕微鏡写真を図2-5 に示す。ま
たこれらの測定により決定した各錯体の相転移温度を表2-3 と図2-6 に，エンタ
ルピー変化とエントロピー変化を表2-4 に示す。


相転移挙動を観察した結果，コア部位にベンゼン環を有するアキラルな錯体
A-Ph6 は比較的狭い温度範囲で液晶相を発現したが，新規に合成したキラルな
金錯体S-Ph6 は液晶性を発現しなかった。一般的な液晶分子は剛直なコア部位
と柔軟な側鎖を併せもつが，A-Ph6 とS-Ph6 はベンゼン環を1 つしかもたず，
コア部位の剛直さが足りなかったために，安定した液晶相を発現できなかった
と考えた。そこでコア部位を長軸方向に伸長した金錯体A-Bi6 とS-Bi6 を設計し
たところ，これらの錯体はエナンチオトロピック液晶性を示したが，金錯体
A-Bi6 とS-Bi6 の融点が非常に高く，液晶温度範囲が高温領域に存在した。金錯
体を液晶材料として実用的に利用する場合には，室温付近で液晶相を発現する
ことが望ましい。ベンゼン環とビフェニル骨格を導入した錯体を比較すると，
いずれの錯体でも柔軟鎖にメチル基を導入することで融点の著しい低下が観測
された。また，アキラルな柔軟鎖を有する錯体の結晶構造から，コア部位の長
軸方向と短軸方向の分子長の比，すなわちアスペクト比を概算すると（図2-7），
アスペクト比と融点，液晶温度範囲との相関が見られた（図2-8）。

ผลลัพธ์ (อังกฤษ) 1:

2-4 phase transition behaviorThermal decomposition of synthesized complexes determined by Thermogravimetry shows difference between heat (TG/DTA).However 5% weight decrease temperature was defined as the pyrolysis temperature. It's also polarizing microscope (POM)Observations and differential scanning calorimetry (DSC) phase transition behaviours observed. Each complexTG/DTA curve DSC curve, shown in Figure 2-3 shown in Figure 2-5 polarization microscope, shown in Figure 2-4. .This is from of each complex was determined by measuring the phase transition temperature table 2-3 and 2-6 in, entertainmentRupees and entropy changes shown in table 2-4.Phase achiral complexes observed behavior with benzene rings in the core areasA chiral A-Ph6 the expressed liquid in a narrow temperature range, new compGold complexes S-Ph6 did not develop liquid. A typical liquid crystal molecules is a rigid core partsAnd with flexible side chains, but it does not have only one benzene ring A-Ph6 and S-Ph6,Could not be expressed enough rigid core sites, stable liquidI thought. We design and core parts in the longitudinal direction elongated gold complexes A-Bi6 and S-Bi6With time, showed a enanthiothro pick liquid crystalline complexes of these gold complexesLiquid temperature range exists at the high temperatures, very high melting point of A-Bi6 and S-Bi6. Gold complexesIn the body as liquid crystal materials in practical use, expressing the liquid at room temperatureThat is desirable. Compared to introduced the biphenyl skeleton with a benzene ring complexesObserved by a methyl group deploying flexible chain complexes of any significant decrease in melting pointIt was. Also, complexes having flexible chains achiral crystal structures from, length of core partsAnd to estimate the ratio of molecular long axis and minor axis direction, i.e. the aspect ratio (Figure 2-7),Correlation between aspect ratio and melting temperature, liquid temperature range was seen (Figure 2-8).

ผลลัพธ์ (อังกฤษ) 2:

2-4 phase transition behavior
thermal decomposition temperature of the synthesized complexes were determined by thermogravimetric differential thermal measurement (TG / DTA).
It should be noted that the 5% weight reduction temperature I was defined as the thermal decomposition temperature. The polarized light microscopy (POM)
we observed a phase transition behavior by observation and differential scanning calorimetry (DSC). Of each complex
a TG / DTA curve Figure 2-3, Figure 2-4, it is shown in Figure 2-5 a polarizing microscope photograph the DSC curve. Or
the phase transition temperature of each complex was determined by these measurements was to Table 2-3 and Figure 2-6, Enta
I show the rupee change and entropy change in Table 2-4. Phase transition results behavior has been observed, achiral complexes having a benzene ring in the core portion but A-Ph6 expressed a liquid crystal phase in a relatively narrow temperature range, chiral was synthesized new gold complex S-Ph6 the liquid crystalline It did not express. General liquid crystal molecules are rigid core sites but with combination of the flexible side chain, A-Ph6 and S-Ph6 choice but no one benzene ring, in order to rigidity of the core sites were not enough, I stable I could not express a liquid crystal phase was considered. So the core site was designed gold complex A-Bi6 and S-Bi6 which was extended in the longitudinal direction place was, but these complexes showed enantiotropic Toro pick liquid crystal, gold complex is the melting point of the A-Bi6 and S-Bi6 very high, liquid crystal temperature range is present in the high-temperature region. Gold complex in the case of practical use of the body as a liquid crystal material, to express a liquid crystal phase at around room temperature is desirable. Comparing the complex obtained by introducing a benzene ring and a biphenyl skeleton, a significant reduction in the melting point observed by introducing a methyl group into flexible strands in either the complex is. In addition, from the crystal structure of the complex with achiral flexible chain, the length of the core site axis and the short axis of the molecular length ratio of, that is, to approximate the aspect ratio (Figure 2-7), the aspect ratio and the melting point, liquid crystal temperature correlation with ranges were observed (Fig. 2-8).

ผลลัพธ์ (อังกฤษ) 3:

Thermogravimetric and differential thermal pyrolysis temperature measurement of the complex was synthesized by the phase transition behavior of two (or DTA TG) was determined by. At 5 in the thermal decomposition temperature and the temperature decrease in weight. Polarizing microscopy and differential scanning calorimetry (DSC observation and POM (HTS) were observed by the phase transition behavior. Fig. 2 or 3. ， TG DTA curve of the complex curve DSC 2-4 in Fig. 2 ， in polarizing microscope. Based on these measurements into it. To determine the phase transition temperatures of the complexes and the table of Fig. 2 to 6 ， enthalpy atEntropy change and change is shown in Table 2. The results ， observed stress phase transition behavior ， expressed liquid crystal phase in a relatively narrow temperature range at the A complexes and achiral Ph 6 having a benzene ring in the core part of new chiral metal complexes synthesized at S Ph 6 expression and liquid crystal property. The liquid crystal molecules ， rigid flexible side chain and core part together with the general ， benzene ring due to lack of the core may be only one site 3h-prolin and rigid, but A Ph -- 6 -- 6 S PhStable expression of ideas and no liquid crystal phase. ， gold complexes and A Bi -- 6 -- 6 S Bi design at the core portion extending in the longitudinal direction in these complexes showed ， Enantiotropic liquid crystal and gold complexes at the melting point of the Bi A -- 6 -- 6 S Bi very high ， existed in high temperature region of the liquid crystal temperature range. ， when practically used as a liquid crystal material and a gold complex body at near room temperature, it is desirable to expression at the liquid crystal phase. A benzene ring with biphenyl backbone and compare 3h-prolin complexesIn any of the complex observation at the melting point to a significant reduction of introducing a methyl group in the flexible chain. The ， the crystal structure of the complexes with flexible chain ， achiral molecule of the length of the length in the axial direction of the core at the site and the short axis direction and the ratio ， is estimated and the aspect ratio (Fig. 2-7 25asb-2 melting temperature range of the aspect ratio of the liquid crystal ， correlation can be seen in Fig. 8 (2)).