Abstract:
본 발명은 광굴절 덴드론 화합물, 이를 이용한 광굴절 덴드리머 화합물 및 이의 응용방법에 관한 것으로서, 보다 상세하게는 트리시아노 피롤린(tricyanopyrroline) 계열의 전자끌게를 함유하는 비선형 발색단 및 전하수송 특성이 우수한 카바졸 유도체를 포함하는 광굴절 덴드론 화합물, 상기 광굴절 덴드론 화합물의 제조방법, 상기 광굴절 덴드론 화합물을 이용하여 제조된 광굴절 덴드리머 화합물 및 그의 제조방법, 상기 광굴절 덴드리머 화합물이 포함된 광굴절 소자 및 상기 광굴절 소자의 제조방법에 관한 것이다. 본 발명의 광굴절 덴드리머 화합물은 덴드론에 비선형 광학 발색단과 카바졸을 도입하여 한분자내에 광전도성과 비선형광학 특성을 동시에 부여함으로써 종래 광굴절 재료에서 광전도성물질과 발색단 사이의 좋지 못한 상용성으로 인해 야기되는 안정성 문제를 해결할 수 있으며, 아울러 근적외선 감응형 비선형광학 발색단을 사용함으로써 생물학적 이미징 기술에 응용할 수 있다. 광굴절 덴드리머, 트리시아노 피롤린, 카바졸 유도체
Abstract:
A photorefractive dendrimer compound is provided to show the photoconductivity and non-linear optical characteristics in one molecule by introducing a nonlinear chromophore and a carbazole into dendron, thereby solving a problem of stability caused by bad compatibility between a photoconductive material and a chromophore and being applicable to a biological imaging technique. A photorefractive dendrimer compound including a carbazole derivative showing excellent non-linear chromophore and charge transporting characteristic containing a tricyanopyrroline-based electron acceptor is represented by a formula(1), wherein A is a group(1) or a group(2), and R consists of 1-20 carbon(s). A photorefractive device comprises the photorefractive dendrimer compound. A method for preparing the device comprises the steps of: (a) dropping a keyhole shaped indium tin oxide transparent electrode on a glass substrate; (b) after dropping the photorefractive dendrimer compound on the electrode, drying it to remove solvent therefrom and vacuum-drying it; (c) after coupling a spacer to a corner of the dried indium tin oxide glass sample, heating the sample up to a temperature of at least glass transition temperature to push down gradually a second indium tin oxide glass on the sample and cooling it; and (d) sealing the substrate using an epoxy or a polyimide film, attaching the electrode thereto.
Abstract:
PURPOSE: An iridium phosphorescent dendrimer is provided to ensure film formation property, and to be effectively used for an electroluminescent device. CONSTITUTION: An iridium phosphorescent dendrimer is represented by chemical formula 1, wherein A is a carbazole-based dendron. A is represented by any one of formulas 2, 3 and 4, wherein Ra is a C1-C22 alkylene group, a C2-C22 alkenylene group, a C5-C30 arylene group or a C6-C30 aminoarylene group, wherein the alkylene group, the arylene group or the aminoarylene group each optionally comprises at least one heteroatom selected from the group consisting of Si, B, O, P, N and S; Rb and Rc are each independently a C1-C22 alkylene group, a C5-C30 arylene group, or a C6-C30 aminoarylene group, wherein the alkylene group, the arylene group or the aminoaryl group each optionally comprises at least one heteroatom selected from the group consisting of Si, B, O, P, N and S; Rb and Rc are connected via a single bond, an alkylene group or an alkenylene group so as to form a fused ring; and n is an integer from 1 through 5.