Abstract:
PURPOSE: A chalcone compound and its preparation method are provided, where the compound can be used as an optically polymerizable liquid crystal molecule and is applied to an optical image and an optical memory. CONSTITUTION: The chalcone compound is represented by the formula I, wherein n is an integer of 2-11. The method comprises the steps of reacting 4-hydroxyacetophenone with NaH in THF, and adding methanol and 1-bromoalkane to the product to prepare 4-alkyloxyacetophenone; dissolving the 4-hydroxybenzaldehyde into acetic acid, and adding the 4-alkyloxyacetophenone and sulfuric acid to the solution to prepare 4-hydroxy-4'-alkyloxy-chalcone; and reacting the 4-hydroxy-4'-alkyloxy-chalcone with terephthaloyl chloride in THF.
Abstract:
본 발명은 단량체 용액 내에서 다기능성 젤화물질에 의해 형성되는 유기젤 및 이들의 중합방법 그리고 이로부터 얻어진 나노파이버가 삽입된 고분자 복합체에 관한 것이다. 상세하게는 본 발명은 두가지 서로 다른 광중합기인 아크릴기와 다이아세틸렌기를 함유하는 다기능성 젤화 물질을 합성하여 아크릴 용매를 젤화 시켰다. 젤 상태에서 단량체 용매의 아크릴기와 젤화제의 아크릴기는 자외선조사에 의해 중합되었고 동시에 젤구조를 묶어 고분자 매질을 형성시켰다. 젤에서 파이버구조를 형성하는 젤화 물질의 다이아세틸렌기는 중합되어 고분자 나노파이버를 형성하였다. 이러한 유기젤의 독특한 이질적인 구조를 이용하여 제조한 기능성 물질은 다양한 분야에 응용이 가능하다. 유기젤, 다기능성 젤화물질, 나노파이버, 고분자 복합체
Abstract:
Provided are a method for manufacturing dispersible carbon nanotube having excellent reactive ester functional groups to organic or inorganic materials and a carbon nanotube thin film using the same. A method for manufacturing dispersible carbon nanotube comprises the following steps of: inducing reactive ester functional groups to the surface of carbon nanotube in order to reform the surface of the carbon nanotube; and adding low-molecular compound or polymer having amine functional groups to the surface-reformed carbon nanotube. The reactive ester functional group represents a pentafluorophenyl ester functional group. The surface-reformed carbon nanotube is covalent-bonded with the polymer having amine groups.
Abstract:
A multifunctional liquid crystal compound, a method for preparing the compound, and a micropattern obtained from the compound are provided to allow a micropattern of high quality to be prepared by forming conjugated polyacetylene chains. A multifunctional liquid crystal compound is represented by the formula I, wherein m is an integer of 2-4; n is an integer of 3-11; and R is a C1-C5 alkyl group or a nitrile group. The multifunctional liquid crystal compound of the formula I is prepared by adding 4-[4-(6-acryloyloxyhexyloxy)phenyl]benzoic acid and a compound represented by the formula II to an organic solvent; and reacting them under nitrogen.
Abstract:
본 발명은 분산성 탄소나노튜브의 제조 방법 및 이를 이용한 탄소나노튜브 박막 필름 제조방법에 관한 것으로서, 본 발명에 따른 분산성 탄소나노튜브의 제조방법은 반응성 에스테르 작용기를 탄소나노튜브의 표면에 도입하여 탄소나노튜브의 표면을 개질하는 단계; 및 상기 반응성 에스테르 작용기로 표면 개질된 상기 탄소나노튜브에 아민 작용기를 갖는 고분자를 첨가하여 반응시키는 단계를 포함한다. 본 발명에 따른 분산성이 제어된 탄소나노튜브를 이용하여, 고강도 필름을 제조할 수 있으며 동시에 박막 필름의 두께 및 투과도를 조절할 수 있다. 제조된 탄소나노튜브 박막 필름은 바이오칩, 바이오센서, 플렉서블 디스플레이, 투명 전극 등에 응용 할 수 있다. 탄소나노튜브, 반응성 에스테르, 펜타플루오로페닐에스테르, 다층 박막 필름, 나노복합재료
Abstract:
An organogel is provided to ensure thermoreverible property and viscoelasticity and to have specific structure that nanofiber formed by self-assembly of gelation materials is uniformly dispersed in a gel state. An organogel compound has a structure represented by the following chemical formula (I). A method for manufacturing an organic gel compound comprises a step of reacting 4-hydroxy-4'-[6-(acryloyloxy)hexyloxy]biphenyl and a compound of the following chemical formula (II). In chemical formula (II), n is an integer of 9-13. A method for manufacturing a polymer composite inserted with nanofiber comprises a step of irradiating ultraviolet rays to the organogel formed with hexyl methacrylate and the compound of chemical formula (I) in the presence of a photoinitiator.