N,N-Bis-(4-substituted phenyl)terephthalamides 의 액정성

• 영문명: Liquid Crystalline Properties of N,N-Bis-(4-substituted phenyl)terephthalamides
• 발행기관: 호서대학교 기초과학연구소
• 저자명: 박주훈 최옥병 소봉근 이수민
• 간행물 정보: 『기초과학연구 논문집』제8권 제1호, 81~91쪽, 전체 11쪽
• 주제분류: 공학 > 공학일반
• 파일형태: PDF
• 발행일자: 2000.12.30

영문 초록

N,N-Bis-(4-substituted phenyl)terephthalamides were prepared and their thermal and liquid crystalline properties were studied by differential scanning calorimetry (DSC) and on a hot-stage of a polarizing microscope. The terminal substituent groups of the com pound were changed : X= -H, -F, -Cl, -Br, -I, -NO2 , -CN, -C6H5 , -CH3 , -C2H5 ,- OC2H5 , and -OC4H9 . The com pounds of X= -H, -F, -Cl, -Br, -I, -NO2 , -CH3, and-C2H5， were not liquid crystals. The com pound of X = -CN was monotropically nematic. The compounds of X= -C6H5 , - OC2H5 and - OC4H9 were enantiotropically smectic A. The group efficiency order of these com pounds was in the order of -C6H5 〉 - OC4H9 〉 -CN> -OC2H5.

목차

Abstract

Ⅰ. 서 론

Ⅱ. 실 험

Ⅲ. 결과 및 고찰

Ⅳ. 결 론

Ⅴ. 참고문헌