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研究生:李錦星
研究生(外文):Li, Jin-Xing
論文名稱:液晶基於N-和3-位置取代聚咯之合成及其電化學特性研究
論文名稱(外文):Synthesis and Electrochemical Characterization of Poly(pyrrole) s,N-Substituted and 3-Substituted with Mesogenic Groups
指導教授:廖本瑞廖本瑞引用關係
指導教授(外文):Liao, Ben-Rui
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:化學工程技術研究所
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:1997
畢業學年度:85
語文別:中文
論文頁數:146
中文關鍵詞:液晶層列型向列型循環伏安法化學工程化學
外文關鍵詞:liquid crystalsmecticnematiccyclic voltammetryCHEMICAL-ENGINEERINGCHEMISTRY
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A series of novel liquid crystalline monomers based on N-
substituted and 3-substituted pyrrole with varying the spacer
length of alkylene and pentyl- or cyano- tail group on biphenyl
mesogenic cores were synthesized. These monomers were
polymerized by electrochemical method to yield conjugative
polypyrrole with biphenyl-based mesogenic cores as the side
groups.All the eight prepared monomers can be classified into
two series; the first series is the N-substituted pyrrole: MPe-
P-n (R = C5H11, n = 6,8 and 10) and MCN-P-n (R = CN, n = 6,8 and
10); the second series is the 3-substituted pyrrole: MAC-P (R =
C5H11, n = 6) and MACCN-P (R = CN, n = 6). All the monomers,
MCN-P-n and MACCN-P with cyano- tail groups exhibited nematic
mesophase. In contrast, all the monomers, MPe-P-n and MAC-P with
pentyl- tail groups showed smectic mesophase. Moreover, the
monomer with cyano- group showed higher Ti than the respective
monomer with pentyl- tail group.The polymers were formed
electrochemically by cyclic voltammetry. For the reason of their
insoluble and infusible. Structure of the polymers could only be
determined by UV and IR spectra. Comparison with the current
response indicated that N-substituted pyrrole forms
electroactive polymer about 40 times faster than 3-substituted
pyrrole. It was reversible and diffusion-controlled during
polymerization. However, comparison with the time maintain
electroactivity of polymer film showed that 3-substituted
pyrrole was longer than N-substituted pyrrole.

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