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Dissertations / Theses on the topic '液晶'

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Published: 4 June 2021
Last updated: 18 February 2022

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1

根本, 文也. "液晶・高分子界面における液晶配向と高分子粘弾性ダイナミクス". 京都大学 (Kyoto University), 2013. http://hdl.handle.net/2433/179366.

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2

劉立謙 та Richen Liu. "含氮雜環液晶材料之研究-含苯乙烯奎林液晶之合成與核磁共振研究". 碩士, 東吳大學, 1985. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22085SCU00065005%22.&searchmode=basic.

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3

Bono, Shinji. "The effect of the confinement in nano-micelles on the liquid crystalline order." 京都大学 (Kyoto University), 2016. http://hdl.handle.net/2433/215295.

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4

金子, 好之. "非晶質シリコン薄膜トランジスタ及びその液晶ディスプレイへの応用の研究". 京都大学, 1993. http://hdl.handle.net/2433/185491.

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本文データは平成22年度国立国会図書館の学位論文(博士)のデジタル化実施により作成された画像ファイルを基にpdf変換したものである<br>Kyoto University (京都大学)<br>0048<br>新制・論文博士<br>博士(工学)<br>乙第8320号<br>論工博第2760号<br>新制||工||928(附属図書館)<br>UT51-93-R106<br>(主査)教授 松波 弘之, 教授 佐々木 昭夫, 教授 田丸 啓吉<br>学位規則第4条第2項該当
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5

内田, 隆之. "非一様な静電場によって誘起される局所的なネマチック秩序に関する理論的・数値的研究". 京都大学 (Kyoto University), 2015. http://hdl.handle.net/2433/200484.

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6

Tung-Cheng, Pan, та 潘東成. "液晶超薄膜相變". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/24196905053222128729.

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7

HUAGN, BI-SHAN, та 黃碧珊. "以液相磊晶法成長AlGaAs磊晶層". Thesis, 1987. http://ndltd.ncl.edu.tw/handle/60175733805542090067.

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8

Yu, Nan-Xian, та 余南賢. "功能性液晶高分子之研究Ⅰ、含反式環己烷液晶聚合物之合成Ⅱ、液晶在高效液相層析上之應用". Thesis, 1991. http://ndltd.ncl.edu.tw/handle/45008814485121922617.

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9

HUANG, CHANG-GING, та 黃常青. "熱向性液晶聚合體合成上的研究及液晶性質的探討". Thesis, 1988. http://ndltd.ncl.edu.tw/handle/89181478679949330917.

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10

JIANG, EN-YI, та 姜恩儀. "液晶輻射強度模擬器". Thesis, 1992. http://ndltd.ncl.edu.tw/handle/11801423008930123742.

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11

CHEN, PING-HAN, та 陳平漢. "銻化銦液相磊晶之研究". Thesis, 1988. http://ndltd.ncl.edu.tw/handle/56064061770077332143.

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12

陳麗年. "含苄基之液晶化合物合成". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/46017070734188250013.

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碩士<br>國立高雄師範大學<br>化學系<br>90<br>Abstract In order to study the liquid crystal behavior of the series of compounds, benzyl 4-(4'-alkyloxybiphenyl-4-carbonyloxy)benzoate ( ) , the compounds with even carbon number of alkoxy chain, 2a(n=2), 2b(n=4) and 2c(n=6), were first synthesized. The compound, benzyl 4-(4'-decoxyphenyl benzoate)(3), was also synthesized for the discussion of the structure effect. Some results are summarized as the following： (1). Three liquid crystal phase sequences are observed： I－SA－K for 2a , I－SA－Sc－K for 2b and I－SA－Sc－S?－K for 2c . And the transition temperature from crystal to the liquid crystal phase is decreasing with the increasing of carbon number. (2). While the compound 2a(n=2) exhibits only the SA phase, the compound 2b( n=4) possesses the Sc phase in addition to the SA phase. (3). The compound 3 does not have any liquid phase. The results show that even a small change in the core structure could have a decisive effect on the formation of liquid crystal phases. (4).The formation of Sc phase for the compound 2b with a n-butoxy chain is interesting and worth noticing.
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13

ZHANG, ZHAO-XING, та 張朝興. "聚醯胺酸液晶行為的探討". Thesis, 1987. http://ndltd.ncl.edu.tw/handle/57216956333914008429.

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14

王冠東. "由(R)-2-辛醇和苯醋酸所組成之掌性液晶合成及其液晶物性研究". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/46632956466959365842.

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碩士<br>國立高雄師範大學<br>化學系<br>91<br>Abstract ATSUO FUKUDA and coworkers have published in 1988 the liquid crystal properties of the compound 1, (R)-4(1-methyl- heptyloxycarbonyl)phenyl 4’-octyloxybiphenyl- 4-carboxylate. 1 ( (R)-MHPOBC ) The liquid crystal is ferroelectric(SmC*)、ferrielectric(SmCγ*) and antiferroelectric(SmCA*)and its liquid crystal phase sequence is Iso→SmA→SmCα*→SmC*→SmCγ*→SmCA*→SmIA*→Cryst. In order to study the influence of the core molecular structure on the phase behavior, the chiral phenol derivativeⅠ, (R)-2-octyl 4-hydroxyphenylacetate (Ⅰ), was synthesized by Dean-Stark Ⅰ method.After esterification of compound Ⅰand the corresponding 4-alkoxybiphenyl 4’-carboxylic acid in the presence of DCC and DMAP, two chiral liquid crystal compounds,[4-heptyloxybiphenyl- 4’-carboxylic acid ] (Ⅱ) and [4-nonyloxybiphenyl-4’-carboxylic acid ](Ⅲ), were prepared. Ⅱ Ⅲ The phase sequence of these two compounds is K→SmA→N*→I(heating) and I→N*→SmA→K(cooling).The phase transition temperature and the temperature range of SmA phase for compound Ⅱ are 86℃→115℃ and 29℃(heating) as well as 114℃→65℃and 49℃(cooling).The corresponding data for compound Ⅲ are 82℃→112℃ and 30℃(heating) as well as 111℃→58℃and 53℃(cooling).The phase transition temperature and the temperature range of N* phase for compound Ⅱ are 115℃→119℃ and 4℃(heating) as well as 118℃→114℃ and 4℃(cooling).The corresponding data for compound Ⅲ are 112℃→115℃ and 3℃(heating) as well as 114℃→111℃ and 3℃(cooling).The phase behavior of these two chiral liquid crystals is different from that of (R)-MHPOBC. Although these new liquid crystal compounds don’t have any ferroelectricity、ferrielectricity and antiferroelectricity, they have the property of thermochromism.Not only the phase behavior but also the physical property of these chiral liquid crystals are helpful for the molecular design and application of thermochromic liquid crystals.
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15

chang, Wen chi, та 翁啟彰. "以4-羥基苯醋酸為核部分子之掌性液晶合成及其液晶物性研究". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/58997976697518761447.

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碩士<br>國立高雄師範大學<br>化學系<br>91<br>The molcule announced by ATSUO FUKUDA et al. in 1988, (R)-4(1- methyl-heptyloxycarbonyl)phenyl 4’-octyloxybiphenyl-4- carboxylate(Ψ), has the properties of ferroelectricity, ferrielectricity and antiferroelectricity. The structure of (R)-MHPOBC is as follow : Ψ Its liquid crystal phase sequence is Iso→SmA→SmCα*→SmC*→ Sm Cγ*→SmCA*→SmIA*→Cryst. This molcule possesses a variety of liquid crystal phases. In order to study the effect of core molecular structure on liquid crystalline phases, (R)-2-octyl 4-hydroxybenzoate is substituted by (R)-2-octyl 4-hydroxyphenylacetate. In addition, the effect of carbon’s number of achiral alkoxyl chain is also investigated. (R)-2-Octyl 4-hydroxyphenylacetate was synthesized by Dean- Stark method. After esterification of this compound and the corresponding 4- alkoxybiphenyl-4’-carboxylicacid in the presence of DCC and DMAP , two chrial liquid crystal compounds, [4-octyloxybiphenyl-4’ —carboxy- licacid] and [4-decyloxy- biphenyl-4’-carboxylicacid], were prepared. The research results show that this series of compounds exhibits liquid crystal phases. But the phases exhibited are simpler for these compounds than those of (R)- MHPOBC. Their phase sequence is K→SA→N*→I (heating) and I→N*→SA→K(cooling). These chrial liquid cryctals have thermochromic property instead of ferroelectricity and antiferroelec- tricity.
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16

Yi, Hsueh Ching, та 薛靜宜. "由(R)-2-辛醇和尼古丁酸所組成之掌性液晶合成及其液晶物性研究". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/19113872732691487004.

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碩士<br>國立高雄師範大學<br>化學系<br>91<br>The structure of chiral chemical compounds has significant influence on the physical properties of ferroelectric liquid crystals(FLCs). The research results of Fukuda，s team indicate that the chiral liquid crystal, 4-(1-methylheptyloxycarbonyl)phenyl 4，-octyloxybiphenyl-4-carboxylate ((R)-MHPOBC),possesses plentiful liquid crystal phases, for example, ferroelectric（Sc*）, antiferroelectric（SCA*）and ferrielectric phase （Scγ*）. The conformation change of (R)-MHPOBC molecule seems to play an important role for these different electric properties. From our former studies, we realize that beneze ring connected to chiral moiety may affect the conformation of liquid crystal molecules. Therefore, in this work we try to use 6-hydroxynicotinic acid to replace 4- hydroxybenzoic acid of (R)-MHPOBC. A series of new chiral liquid crystals was prepared by the following three reaction procedures: (1) 4-(4'-octoxyphenyl)benzoic acid and 4-(4'-decoxyphenyl)benzoic acid were synthesized from 4-hydroxybiphenyl carboxylic acid by the etherification, esterification, and saponification; (2) esterification of 6-hydroxynicotinic acid and (R)-2-octanol to form compound 2; (3) formation of target molecules 3 and 4. The liquid crystal phase sequence of compound 3 is I－SA－S？－K. It is, therefore, not a FLC. The liquid crystal phase sequence of compound 4 is I－SA－Sc*－Scγ*－SCA*－K and its Ps value is 76 nC/㎝2 at 95℃. The results show that compound 4 has ferroelectricity, ferrielectricity and antiferroelectricity. These electric properties are primarily confirmed by comparing the textures of target molecule 4 with those of (R)-MHPOBC. The final evidence should be confirmed by electric investigations.
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17

Wang, I.-Wen, та 王怡文. "以benzoxazole為架構之無機桿狀液晶". Thesis, 2006. http://ndltd.ncl.edu.tw/handle/14805440259311485648.

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碩士<br>國立中央大學<br>化學研究所<br>94<br>Three series of mesogenic compounds were prepared and studied in this thesis. All compounds described were characterized via 1H-NMR, 13C-NMR, mass spectroscopy, and elemental analysis. The mesophases were studied polarized optical microscopy (POM) and differential scanning calorimeter (DSC), and the structures of the mesophases were also confirmed by variable temperature X-ray diffraction experiments. In the first series, a new type of mesogenic compounds derived from heterocyclic benzoxales were prepared and studied. All compounds exhibited nematic or/and smectic phases depending on the carbon length attached. In the second series, numberous metal complexes including copper, palladium, cobalt, zinc and nickel ion coordinated with substituted benzoxales were prepared and their mesomorphic behavior studied. Their mesomorphic properties were dependent on the metal incorported. All Cu2+, Ni2+ and Pd2+ complexes exhibited nematic, or/and smectic plases, however, Zn and Co were crystalline phases. The mesomorphic properties were attributed to the geometries (tetrahedral or square planar) and electronic configuration (paramagnetic or diamagnetic) of the metal ions incorporated. In the third series, the effect of substituent groups on the formation of the mesophases was invistigated. A variety of benzoxale derivatives with a substituent including CN, NO2, Cl, Br, OCF3, F, OCH3 were studied. The data indicated that the formation of the mesophase were strongly dependent on the electronic properties of the substituents. A SmA phase was observed for derivatives with a strong electrondrawing substituent, and a N phase was observed for the derivative with an electrondonating substituent. Electron cloud distribution between HOMH and LUMO precticted by theoretical calculation is studied, and the data showed that there is an energy gap of the electrondrawing and electrondonating substituent.
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18

胡美月. "苄醇作為液晶末端基之研究". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/64705455765869581652.

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碩士<br>國立高雄師範大學<br>化學系<br>90<br>The compound,benzyl 4-(4’-octoxybiphenyl-4-carbonyloxy) benzoate (8b), was first synthesized by Gray and coworkers. The results show that this compound is not a liquid crystal. Lee of our laboratory has synthesized the same compound and proved that it do have mesogenic properties. A series of homologues with different number of alkoxy chain were synthesized in order to study the relationship between the structure and the liquid crystal phase behavior. This series of compounds were prepared by the esterification of 4-(4’-alkoxyphenyl)benzoic acid and 4-hydroxybenzoic acid benzyl ester in the presence of DCC and DMAP. The results indicate that all of the compounds (10b to 2b) have the same liquid crystal phase sequence K－SA－I during the heating process. But they show different phase behavior during the cooling process: I－SA－SC－S?－K for 10b、9b、8b、7b and 6b；I－SA－SC－K for 4b；I－SA－K for 5b、3b and 2b. The phase transition temperature of SA phase has an even-odd effect during the heating process. However the compound (10c) does not possess any liquid crystal phase. n=10→10b、n=9→9b、n=8→8b、n=7→7b、n=6→6b、n=5→5b、 n=4→4b、n=3→3b；n=2→2b →10c
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19

吳炅震. "含萘液晶共聚酯特性之研究". Thesis, 2000. http://ndltd.ncl.edu.tw/handle/98770386866390385421.

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碩士<br>國立成功大學<br>化學工程學系<br>88<br>Liquid Crystalline Polymer, in short, LCP, is in the family of high performance engineering plastics. LCP is broadly applied in electronic parts, mechanical components, household appliances, medical appliances, automobile parts and chemical engineering equipment since its characteristics of outstanding physical and chemical properties such as well-process, self-mend, heat endurance, and chemical treatment endurance. In this research, we utilize the technology of Vectra’s polymerization and simulate PET’s industrial processing. We also add monomers, which are terephthalic acid (TPA) and hydroquinone (HQ), and then divide our experiment into two stages. The initial stage is esterification, which can not accomplish without 4-hydroxybenzoic acid, 6-hydroxybenzoic-2-naphthoic, hydroquinone and acetic anhydride. The second stage is polymerization. Blend the different mole ratio of HNA, HBA, TPA and HQDAc into reactor, and then we obtain the products. We make use of instruments of DSC, TGA, XRD, and SEM to measure the properties. The result of our research demonstrates that the characteristics of products includes nice anti-solvent, good heat resistance, and with over 500 degree of thermal decomposition temperature. According to XRD and SEM, two characteristics are discovered. We observe that adding the TPA and HQDAc can increase the crystalline, and raise the characteristics of products.
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20

ZHENG, ZHI-HE, та 鄭智和. "InAsSb/InSb液相磊晶成長條件探討". Thesis, 1987. http://ndltd.ncl.edu.tw/handle/12970407050209214679.

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21

Hu, Jeng-Yan, та 胡正彥. "反射式矽液晶光電元件分析". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/82109761295302708553.

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22

QIU, CHAO-DONG, та 邱朝棟. "由液晶抽絲製聚醯亞胺纖維". Thesis, 1990. http://ndltd.ncl.edu.tw/handle/72154063976268673703.

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23

WU, JUN-JIE, та 吳俊傑. "線狀液晶之光電雙穩態特性". Thesis, 1988. http://ndltd.ncl.edu.tw/handle/40744638407580348246.

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24

黃光宇. "以6-羥基尼古丁酸為核部分子之掌性液晶合成及其液晶物性之研究". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/34312726352999058728.

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碩士<br>國立高雄師範大學<br>化學系<br>91<br>Abstract In order to study the influence of the core structure on the phase behavior of the well-known antiferroelectric liquid crystals, (R)-MHPOBC , a series of homologoues containing pyridinyl ring was derived from (R)-2- octanol. New chiral liquid crystals 3a and 3b were synthesized by the esterification of 4-alkoxybiphenyl carboxylic acid 2a or 2b and the chiral phenolic compound 1. The liquid crystal phase sequence of the compound 3a is K─S?─SA─I. Therefore, it is not a ferroelectric liquid crystal. The liquid crystal phase sequence of the compound 3b is K─SCA*─S?─SC*─SA─I. It not only has the property of ferroelectricity but also antiferroelectricity. Our research results indicate that : （1） The length of the terminal achiral chain has a profound effect on the occurrence of SC*, SCA* and SCγ* phase. The reason is still not clear but the conformation change between 3a and 3b seems to be a plausible explaination. （2） The substitution of the phenyl ring of the (R)-MHPOBC structure by the pyridinyl ring does not interrupt the formation of SCA* phase. In comparison to (R)-MHPOBC chiral liquid crystal 3b has a lower phase transition temperature. (R)- MHPOBC 結構 (1)： (2)： (3):
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沈裕琪. "懸浮液晶薄膜表面張力之研究". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/37194128323101136097.

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26

HUANG, SHI-HUANG, та 黃世煌. "INGaAsP ／ InP 液相磊晶成長與特性量測". Thesis, 1989. http://ndltd.ncl.edu.tw/handle/31619173765215508961.

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27

黎碧耀. "X光繞射法測量液相磊晶HgCdTe/Cd Te之晶格差配". Thesis, 1986. http://ndltd.ncl.edu.tw/handle/16561460584468883522.

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28

Lin, Ying-Hsuan, та 林螢瑄. "薄膜電晶體液晶顯示器相關技術之專利計量研究". Thesis, 2004. http://ndltd.ncl.edu.tw/handle/58806467271346220421.

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29

ZHANG, SHI-YING, та 張世英. "InGaAsP光電材料的液相磊晶製程探討". Thesis, 1987. http://ndltd.ncl.edu.tw/handle/71356358677885669557.

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30

蔡維霖. "車載液晶顯示器電磁干擾之研究". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/89822540982485406933.

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碩士<br>國立彰化師範大學<br>電機工程學系<br>99<br>The EMC design principle requires that EMI be attenuated at its source on the PC board. It is necessary to confine unfiltered high frequency noise components. When properly selected ferrites can thus provide significant EMI reduction. The unique high frequency noise suppression performance of ferrites can be traced to their frequency dependent complex impedance. Ferrites can thus provide resistive loss to dissipate high frequency noise while presenting negligible series impedance to lower frequency intended signal components. Besides, effective source filtering also helps limit overall EMC design costs by reducing the need for additional shielding. Due to the increasing demand for automotive electronics, EMC Impact on vehicle electronic equipment become more and more attention. EMC testing the main purpose is to ensure that the connection to the vehicle systems functioning electronic equipment without electromagnetic interference effects. Implementation of EMC testing, due to the construction of vehicle electronic components and feature different, execution of test projects, and the conditions are not the same, but various tests are guided by specifications. In this study, we used ferrite beads to suppress EMI, the result showed that the value of vertical polarization measurement exceeds the standard value. But the ferrite beads were placed in the signal transmision line and clock line and tested it again. The result showed that the value of vertical polarization measurement was lower than the standard value, the maximum reduction rate being about 14-16 dB.
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Hsin, Liu Yi, та 劉宜欣. "液晶薄膜比熱與光反射相變研究". Thesis, 2000. http://ndltd.ncl.edu.tw/handle/51705405194353107149.

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32

林永先. "含雙金屬桿狀液晶之設計與合成". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/02581033263524699802.

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碩士<br>國立中央大學<br>化學研究所<br>87<br>This thesis describes the design, synthesis and characterization of metal-containing liquid crystals (metallomesogens) by incorporation of single or multi-metal centers. The formation of this type of metallomesogenic materials is faciliated by weak coordination interaction which is quite different from traditional organic mesogenic materials. Most of reported metallomesogenic materials are generally of mono-metallic species and known examples of bimetallic or polymetallic structures are extremely rare. Interaction between metal centers in this type of polymetallomesogenic structures would apparantly enrich the mesomorphic and their related physical properties. In this thesis we will study three types of metallomesogenic structures. In series one the mono- or bi- copper and vanadyl complexes derived from β,δ--triketones is obtained by controling appropriate equivalent amounts used. Geometry of trans in coordination site of β-diketone in mononuclear complexes is confirmed by single crystal X-ray analysis, and experimental data also indicated that the head-to-tail linear structures in vanadyl complexes is formed based on variable-temperature IR spectroscopy. In series two copper complexes based on β-enaminoketones are prepared and mesomorphic results showed that liquid crystalline properties is lost for complexes with a terminal methyl group. This tetrahedral methyl group apparently inhibits the preferred packing of the molecules and therefore destroys the weak molecular interaction. In series three bimetallic complexes with ferrocene-derivative are prepared and discussed. Initial data indicate that vanadyl complexes exhibit mesomorphic proparties, however, the copper complexes formed crystalline phases.
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33

WU, YI-LU, та 吳憶魯. "碲化汞鎘雙層液相磊晶成長研究". Thesis, 1990. http://ndltd.ncl.edu.tw/handle/71245493924319939884.

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34

SHAO, JING-HENG, та 邵靖衡. "煤焦瀝青液晶界相化學性質研究". Thesis, 1991. http://ndltd.ncl.edu.tw/handle/48589143803450434210.

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35

Shih, Ying-Kai, та 施英凱. "一、液相合成carbolinone衍生物 二、有機雜環液晶之合成與探討". Thesis, 2003. http://ndltd.ncl.edu.tw/handle/25961419014973636501.

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碩士<br>國立中央大學<br>化學研究所<br>91<br>ABSTRACT Natural and synthetic products having the carboline structure often exhibit important medicinal properties. In the thesis, we synthesize the Tetrahydro -β-carbolinone derivatives by a new method. And we can change it’s alkyl group which is on the N atoms of Tetrahydro-β-carbolinone. The part two in the thesis describes the synthesis of a new rodlike liquid crystal which is triazole-based. These compounds were characterized by 1H- and 13C-NMR spectroscopy and elemental analysis. The mesomorphic properties of these compounds was characterized and studied by different scanning calorimetry(DSC) and polarized optical microscope.
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Xu, Xin-Zai, та 許心在. "浮點式長晶過程液橋之穩定性分析". Thesis, 1992. http://ndltd.ncl.edu.tw/handle/85753413510164820826.

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Sun, Tsai-en, та 孫彩恩. "液晶螢幕背光模組光學設計之研究". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/27051467892236510308.

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碩士<br>正修科技大學<br>機電工程研究所<br>98<br>Abstract Basically, backlight module is comprised of CCFL, hot cathode fluorescent tubes, LED, lampshade, reflector, light guide plate, 1-2 diffusion sheets, 1-2 brightness enhancement films, and framework, etc.. LCD monitor not only has its vantages (ex. thinness in shape, light weight, and portability) but also has a lower radiation in comparison with current CRT. In recent years, a rapid increase in demand just proves that LCD monitor can have a central place in the market. As the development of LCD monitor keeps improving over time, backlight module not only need to face the trend of large size and low prices but also concern itself with light-weighting, thin stimming, low power-consumption, high brightness, as well as the reduction in costs because of the market requirements. To maintain the competiveness of the future market, the development of backlight module and LED light bar design should be seen as an important issue to be achieved. Keywords : Liquid Crystal Display, Back Light Module, LED, numerical simulation
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38

王烔翰. "液晶次毫米波段光學特性之研究(I)". Thesis, 2002. http://ndltd.ncl.edu.tw/handle/22382267380651113368.

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陳慧玲. "含奈聚酯液晶彈性體之合成與研究". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/94811897964550563509.

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碩士<br>國立成功大學<br>化學工程學系<br>89<br>After the discovery of Kevlar by Du Pont Co., let the great progress of liquid crystalline polymer. The successful example is Vectra that exhibits chemical resistance, high heat resistance, etc. So we added the soft segment into the main chain of Vectra to form the liquid crystalline elastomers (LCE) by the melt polycondensation reactions. According to the technology of Vectra’s polymerization and the industrial processes of PET, the LCEs that based on 6-hydroxy- 2-naphthoic acid (HNA), 4-hydroxybenzoic acid (HBA), terephthalic acid (TPA) and polytetramethylene ether glycol (PTMEG) have been synthesized by two stages. The initial stage inclued that ANA and ABA were prepared differently by the esterification of HNA and HBA and the soft segments were prepared from TPA and PTMEG. The second stage, the LCEs with ABA, ANA and different amount or molecule weights of the soft segments were prepared by melt polycondensation reactions. The LCEs were characterized by IR, NMR, EA, TGA, DSC, XRD, DMA and POM. The results of the research demonstrate that the characteristics of the products include good anti-solvent and over 400℃ of the decomposition temperature. Increasing the amount and the molecule weights of the soft segment PTMET reduce the melting point, the glass transition point, the crystalline. And the mesophase can be observed by POM. 英文摘要……………………………………………………………………Ⅱ 誌謝…………………………………………………………………………Ⅲ 總目錄………………………………………………………………………Ⅳ 表目錄………………………………………………………………………Ⅴ 圖目錄………………………………………………………………………Ⅶ 主文 第一章 前言…………………………………………………………….1 第二章 文獻回顧與原理……………………………………………….3 2.1 液晶概要…………………………………………………..........3 2.2 液晶高分子………………………………………………..........5 2.3 熱塑性彈性體……………………………………………..........11 2.4 彈性體所使用之硬鏈段與軟鏈段………………………..........16 2.5 聚酯液晶之合成方法……………………………………..........18 2.6 Vectra液晶彈性體的合成方法…………………………..........20 第三章 實驗部分………………………………………………………….23 3.1 藥品……………………………………………………….23 3.2 實驗設備及儀器………………………………………….24 3.3 合成步驟………………………………………………….26 3.4 儀器分析方法…………………………………………….29 第四章 結果與討論……………………………………………………….34 4.1 製程之探討……………………………………………….34 4.2 酯化物之結構分析……………………………………….36 4.3 液晶彈性體之成分分析及性質測試…………………….38 第五章 總結……………………………………………………………….71 第六章 參考文獻………………………………………………………….72 自述………………………………………………………………………..77
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Yang, Cheng-Da, та 楊政達. "含過渡金屬液晶材料之設計與合成". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/24859376002139370265.

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41

張柏寧. "液晶薄膜相位光學鑑定分析與研究". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/31347633319635852727.

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42

Wu-PinJiun та 吳品鈞. "液晶薄膜光學條紋分析及比熱量測". Thesis, 2000. http://ndltd.ncl.edu.tw/handle/95806717402053151716.

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LIAO, JIN-XIAN, та 廖晉賢. "聚二醚銅與液晶高分子混摻之研究". Thesis, 1993. http://ndltd.ncl.edu.tw/handle/73533793148581116666.

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CHEN, MING-ZHENG, та 陳明政. "光聚合法液晶薄膜製作上的應用研究". Thesis, 1991. http://ndltd.ncl.edu.tw/handle/70032585097168572008.

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Lin, Yu Song, та 林裕松. "我國液晶顯示器產業發展策略之研究". Thesis, 1995. http://ndltd.ncl.edu.tw/handle/99877368977142855386.

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WANG, JIAN-HONG, та 王健宏. "液相磊晶成長ＩｎＣａＡｓＰ及光檢測元件之研製". Thesis, 1986. http://ndltd.ncl.edu.tw/handle/27211416792067541018.

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蘇人俊. "Oxadiazoles及Triazoles等雜環有機液晶之設計與探討". Thesis, 2001. http://ndltd.ncl.edu.tw/handle/87774141321098605164.

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碩士<br>國立中央大學<br>化學研究所<br>89<br>ABSTRACT The synthesis, characterization and mesomophic properties of a new type of liquid crystalline compounds, 2,5-bis(3,4,5-trialkoxyphenyl)-1,3,4-oxadiazoles and 4-alkyl(aryl)-3,5-bis(3,4,5-trialkoxyphenyl)-4H-1,3,4-triazoles are reported. These heterocyclic compounds were derived from unsaturated 1,3,4-oxadiazoles and 1,2,4-triazoles as the core group, and obtained by condensation reaction of 3,4,5-trialkoxybenzoic acid N-(3,4,5-Trialkoxybenzoyl)hydrazides. These compounds were characterized by 1H- and 13C-NMR spectroscopy and elemental analysis. The mesomorphic properties of these compounds was characterized and studied by different scanning calorimetry(DSC) and polarized optical microscope.The primation of mesophases was found to be dependent of the numbers of alkoxy sidechains attached. Some compounds exhibited hexagonal columnar(Colh) phases, however, the others formed crystalline phases regardless of the carbon length on the sidechains. The compounds with shorter carbon sidechains were room temperature liquid crystals. Thepolar induction by nitrogen or/and oxygen atoms on the heterocyclic core ring might be responsible for the formation and beter observed mesomorphic properties in this type of compounds.
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吳富厚. "我國液晶投影機產業之進入障礙分析". Thesis, 1999. http://ndltd.ncl.edu.tw/handle/84715135224898648312.

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LI, ZHENG-ZHONG, та 李振仲. "低氧分壓下煤焦瀝青之液晶介相研究". Thesis, 1987. http://ndltd.ncl.edu.tw/handle/14774058929736231898.

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CHEN, MENG-HONG, та 陳錳宏. "Azomethine系液晶化合物之合成及其特性研究". Thesis, 1992. http://ndltd.ncl.edu.tw/handle/11031430515254471922.

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