화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.7, 654-659, November, 2002
Export Citation
비페닐렌 메소겐단위를 포함한 4,4'-bis(ω-hydroxyalkoxy)biphenyl의 합성 및 열적성질
Synthesis and Properties of Biphenylene Mesogen Containing 4,4'-bis(ω-hydroxyalkoxy)biphenyls
이종백†
  • 동의대학교 화학공학과, 부산 614-714
Jong Baek Lee†
  • Department of Chemical Engineering, Dongeui University, Busan 614-714, Korea
E-mail:
초록
화합물 4,4'-bis(ω-hydroxyalkoxy)biphenyls (BPm: m=3, 4, 5, 6, 7, 8, 9, 10, 11, 12)은 4,4'-dihydroxybiphenyl와 ω-halogenated alkanols를 반응시켜 합성하였다. IR 및 1H NMR 스펙트럼을 사용하여 합성된 BPm의 구조를 분석하였다. 이들의 열적 및 액정특성을 관찰하기 위해서 DSC 및 편광현미경을 사용한 결과, BPm은 모두 일정한 온도 영역에서 스멕틱 상의 액정성을 나타내었다. 또한 이러한 액정 화합물은 전형적인 짝수-홀수의 효과를 나타내었다.
A series of 4,4'-bis(ω-hydroxyalkoxy)biphenyls (BPm: m=3, 4, 5, 6, 7, 8, 9, 10, 11, 12) was synthesized by the reaction of 4,4-dihydroxybiphenyl with ω-halogenated alkanols. The chemical structures of BPm were determined by Infrared and 1H NMR spectra. All these compounds exhibited a smectic liquid crystalline phase in a certain temperature range, which was determined by differential scanning calorimetry (DSC) and polarizing optical microscopy (POM). The liquid crystalline compounds also showed the typical even-odd effect.
Keywords:4,4'-bis(ω-hydroxyalkoxy)biphenyl;differential scanning calorimetry;polarizing optical microscope;even-odd effect
  1. Collings PJ, Liquid Crystals, Princeton University Press (1990)
  2. Collings PJ, Hird M, Introduction to Liquid Crystals, Taylor & Francis Ltd., 3-23 (1997)
  3. Jin JI, Antoun S, Ober C, Lenz RW, Polym. J., 12, 132 (1980)
  4. Uryu T, Kato T, Macromolecules, 21, 378 (1988) 
  5. Penczek P, Frisch KC, Szczepaniak B, Rudnik E, J. Polym. Sci. A: Polym. Chem., 31, 1211 (1993) 
  6. Kricheldorf HR, Awe J, Makromol. Chem., 190, 2579 (1989) 
  7. Tanaka M, Nakaya T, Makromol. Chem., 187, 2345 (1986) 
  8. Stenhouse PJ, Valles EM, Kantor SW, MacKnight WJ, Macromolecules, 22, 1467 (1989) 
  9. Iimura K, Koide N, Tanabe H, Takeda M, Makromol. Chem., 182, 2569 (1981) 
  10. Lee JB, Kato T, Yoshida T, Uryu T, Macromolecules, 26, 4989 (1993) 
  11. Lee JB, Kato T, Ujiie S, Iimura K, Uryu T, Macromolecules, 28(7), 2165 (1995) 
  12. Lee JB, Kato T, Uryu T, Polym. J., 27, 664 (1995) 
  13. Lee DJ, Lee JB, Koide N, Akiyama E, Uryu T, Macromolecules, 31(4), 975 (1998) 
  14. Lee JB, Song JC, J. Ind. Eng. Chem., 4(2), 140 (1998) 
  15. Jeong HM, Lee JB, Lee SY, Kim BK, J. Mater. Sci., 35(2), 279 (2000) 
  16. Lee JB, J. Ind. Eng. Chem., 6(5), 338 (2000)
  17. Lee JB, J. Korean Ind. Eng. Chem., 12(6), 649 (2001)