Heck coupling 반응을 이용해서 poly{2-[2-(2,5-bis-dodecyloxy-4-propenyl-phenyl)-vinyl]- 7-methyl-fluoren-9-one(PFone), poly{2-[2-(2,5-bis-dodecyloxy-4-propenyl-phenyl)-vinyl]-7-methyl-fluoren-9-ylidene}-malonitrile(PF2CN)을 합성하였다. 합성한 중합체의 광학적, 전기화학적 특성을 흡수, 형광분광법 및 cyclic voltammetry(CV)를 통해 확인하였다. PFone과 PF2CN 필름의 흡수 극대치는 410 nm과 410.5 nm에서 나타났다. PFone 및 PF2CN의 최대 발광파장은 각각 633과 635nm로 나타났다. PFone과 PF2CN의 band gap은 각각 2.06eV 과 2.36eV이고 CV를 통해 측정한 LUMO 에너지 준위는 -3.36eV 와 -3.46eV로 나타났다.

PAQ(poly-2-[2-(2,5-Bis-dodecyloxy-4-vinyl-phenyl)-vinyl]-anthraquinone)과 PAN4CN(poly- 2-{2-[2-(2,5-Bis-dodecyloxy-4-vinyl-phenyl)vinyl]-10-dicyanomethylene-10H-anthracen-9-ylidene}-malononitrile)을 Heck coupling reaction을 이용하여 합성하였다. 합성한 중합체의 전기적, 광학적 특성은 UV-visible spectra, photoluminescence (PL) spectra 및 cyclic voltammetry 측정을 통해 확인하였다. 흡수 스펙트라 측정 결과, thin film에서의 흡수극대치는 PAQ 와 PAN4CN은 334nm에서 나타났고, 용액에서는 PAQ 338nm, PAN4CN은 336nm 나타났다. 발광 극대치의 측정결과 PAQ는 thin film에서 420nm와 용액상에서는 416nm, PAN4CN은 thin film에서 395nm와 용액에서는 550nm로 각각 나타났다. PAQ과 PAN4CN의 band gap은 각각 2.16 eV, 2.04 eV이고 CV를 통해 LUMO 준위는 -3.64eV, -3.52eV로 나타났다.

Fe powders with elongated and aggregated structure as heat pellet material for thermal battery applications were prepared by spray pyrolysis under various preparation conditions. The precursor powders with spherical shapes and hollow morphologies turned into Fe powders after reduction at a temperature of 615˚C under 20% H2/Ar gas. The powders had pure Fe crystal structures irrespective of the preparation conditions of the precursor powders in the spray pyrolysis. The morphologies and mean sizes of the Fe powders are affected by the preparation conditions of the precursor powders in the spray pyrolysis. Therefore, the ignition sensitivities and the burn rates of the heat pellets formed from the Fe powders prepared by spray pyrolysis are affected by the preparations of the precursor powders. The Fe powders prepared under the optimum preparation conditions have a BET surface area of 2.9 m2g1. The heat pellets prepared from the Fe powders with elongated and aggregated structure have a good ignition sensitivity of 1.1W and a high burn rate of 18 cms1.

Ultra-fine TiC/Co composite powder was synthesized by the carbothermal reduction process without wet chemical processing. The starting powder was prepared by milling of titanium dioxide and cobalt oxalate powders followed by subsequent calcination to have a target composition of TiC-15 wt.%Co. The prepared oxide powder was mixed again with carbon black, and this mixture was then heat-treated under flowing argon atmosphere. The changes in the phase, mass and particle size of the mixture during heat treatment were investigated using XRD, TG-DTA and SEM. The synthesized oxide powder after heat treatment at 700 has a mixed phase of TiO and CoTiO phases. This composite oxide powder was carbothermally reduced to TiC/Co composite powder by the solid carbon. The synthesized TiC/Co composite powder at 1300 for 9 hours has particle size of under about 0.4 m.

In this study DMT(Dimethylterephthalate), NDC(Dimethyl-2, 6-Naphthalene Dicarboxylate) were used to synthesize polyester polyol which shows enhanced storage stability, improved flame retardancy, and good compressive strength. If DMT and NDC react respectively with DEG(Diethylene Glycol) which is kind of linear diol, the obtained polyester polyols tend to crystallize easily after the reaction. In case of DMT, PA(Phthalic Anhydride) which has asymmetric structure was introduced to retard the crystallization. In case of NDC, DPG(Dipropylene Glycol) which has an methyl side chain was introduced to prevent the crystallization. It was found that to introduce DPG was much more effective method to prevent the crystallization than PA. NDC and DMT were reacted together with DPG for various compositions of NDC:DMT(8:2, 6:4, 4:6 mol ratio). The obtained NDC-DMT-DPG based polyester polyol showed improved flame retardancy, and good compressive strength with increasing the content of NDC.

In this study, block copolymer of polystyrene and polyethylene glycol methyl ether methacrylate(PEGMA) by ATRP(atom transfer radical polymerization) method was synthesized. 4 arm-molecule which contained halogen atom was synthesized for an initiator. With 4 arm-molecule monodispered polystyrene were synthesized by ATRP method. The molecular change of synthesized monodispersed polystyrene with respect to time was investigated and living polymer characteristic was confirmed. Block copolymer of polystyrene and polyethylene glycol methyl ether methacrylate(PEGMA) was synthesized by ATRP with macroinitiator which was synthesized from the monodispersed polystyrene(Mn=12000). The molecular weight of obtained PS-b-PEGMA was 22,000.

Melanoma is the most serious type of skin cancer as a malignant tumor of melanocytes. In this work, the syntheses of a novel series of benzaminoquinoline derivatives 1a-c and their antiproliferative activities against A375 human melanoma cell line were described. All the compounds (IC50=0.78-1.02μM) showed superior antiproliferative activities to Sorafenib (IC50=5.58μM) as a reference compound. These results suggested that benzaminoquinoline derivatives have potentials as a therapeutic agent for the treatment for melanoma.

오늘날 3D 캐릭터 애니메이션은 실사영화, 애니메이션, 게임, 광고 등 대다수의 영상물에서 쉽게 접할 수 있다. 하지만, 이러한 캐릭터의 부드러운 움직임은 모션캡쳐(Motion Capture)와 같은 고가의 장비를 통해 얻어진 데이터를 숙련된 애니메이터들이 오랜 시간 키 프레임(Key Frame)을 수정함으로써 얻어진다. 경우에 따라서는 애니메이터 개인의 감성적 기준에 따라 제작되어진 캐릭터의 행동이 관객들의 보편적 기대치와 다를 때도 있는데, 이것은 제작되어진 캐릭터의 행동과 관객들의 감성반응에 대한 객관적 관계식이 정립되지 못했기 때문이다. 3D 캐릭터의 걸음걸이를 대상으로 한 본 연구에서는 상기의 관계식 추출과 정립을 위한 실험장비로서 3D Studio MAX Script를 이용한 3차원 회전의 연산 툴을 제안한다. 2~3개의 바이패드 데이터 수정과 합성을 주요기능으로 삼고 있는 이 툴을 통해 걸음걸이와 감성반응 사이의 정량적 관계식에 접근하기 위한 다양한 연구가 용이하게 되었다.

목적: 실리콘은 생체적합성과 기체투과성 등의 특성을 가지고 있어 의료용 목적으로 많이 사용되고 있다. 이에 본 연구에서는 콘택트렌즈에 적용 가능한 실리콘의 합성과 그 응용에 있다. 방법: HEMA(2-hydroxyethyl methacrylate)를 사용하여 Acrylate-PDMS(Polydime-thylsiloxane) prepolymer를 합성하였다. 여기에 Phenyltrimethoxysilane을 비율별로 사용하였다. 촉매제로는 HCl를 사용하였으며, Na2CO3 수용액으로 촉매를 중화시켰다. 또한 DIW 제거를 위해 MgSO4를 사용하였다. 결과: FT-IR을 통하여 Poly Dimethylsiloxane에 Acrylate와 Phenyl이 Modification 되었음을 확인하였다. 결론: 합성된 Polydimethylsiloxane을 이용하여 기존의 친수성을 갖는 콘택트렌즈 재료와의 공중합을 통해 기능성 콘택트렌즈로 응용될 수 있을 것으로 판단된다.

목적: 본 연구에서는 Polyphosphazene을 고산소투과성 콘택트렌즈 재료로 활용하기 위하여 vinyl기와 2-hydroxyethyl methacrylate로 치환된 poly(vinylphosphazene)을 합성하였다. 방법: HEMA와 Vinyl기로 치환된 polyphosphazene은 거대분자 치환법을 사용하여 합성하였다. poly(dichlorophosphazene)를 고리 열림 고분자 중합법을 사용하여 합성한 후, Grignard 시약인 (CH2=CH-MgBr)을 가하여 vinyl기로 치환시켰으며, 합성한 폴리머를 다시 HEMA(2-hydroxyethyl methacrylate)와 반응시켰다. 결과: 1H-NMR spectrum 분석결과 중합가능한 vinyl기와 2-hydroxyethyl methacry-late로 치환된 poly(vinylphosphazene)을 확인하였다. 결론: 합성된 물질은 고산소투과성 콘택트렌즈 재료로 활용될 수 있을 것으로 기대된다.

최근 문화유산에 대한 관심이 고조 되면서 노후화된 건조물문화재의 보존에 대한 중요성이 대두되고 있다. 건조물문화재의 대부분이 목재를 주재료로 사용하였으며, 이들 건조물문화재의 노후화에 따른 부식 및 손상에 대한 보존수리는 부재자체의 문화재적 가치를 고려하여 원형유지를 기본원칙으로 한다. 이에 따라, 합성수지를 이용한 보존처리방법이 부각되고 있다. 이에 본 논문은 합성수지로 보강한 원형단면 목재의 압축보강 성능에 관한 실험적 연구로서 합성수지의 보강단면적비율, 단면의 보강방향, 보강길이, 합성수지강도를 변수로 하여 총 14개의 시험체를 제작하여 실험하였다. 실험결과 합성수지를 이용하여 적절하게 보강할 경우 신재이상의 보강효과가 있는 것으로 나타났으며 문화재의 보수 및 보강에서 가장 중요한 오센티시티(authenticity)를 확보할 수 있을 것이다.

Conventional additives were added to a newly synthesized base oil to create synthetic lubricants. Commercial polyol ester prepared in this laboratory were obtained as esterification of 1,1,1-trimethylol propane and respectively. This newly synthesized base oil had a variable chemical structure that could achieved the following properties; oxidation or thermal stability, low temperature fluidity, and higher flash points. When compared with commercial mineral lubricants, the synthetic lubricants show superior thermal and oxidation stability, and anti-wear properties.

Silicone dioxide absorbed polyoxyethylene alkylether sulfate (EU-S133D) surfactant was prepared. Core-shell polymers of inorganic/organic pair, which have both core and shell component, were synthesized by sequential emulsion polymerization using Acrylate as a shell monomer and potassium persulfate (KPS) as an initiator. We found that when Acrylate core prepared by adding 2.0 wt% EU-S133D, silicone dioxide/Acrylate core-shell polymerization was carried out on the surface of silicone dioxide particle without forming the new silicone dioxide particle during acrylate shell polymerization in the inorganic/organic core-shell polymer preparation. The structure of core-shell polymer were investigated by measuring to the thermal decomposition of polymer composite using thermogravimetric analyzer and morphology of latex by scanning electron microscope(SEM).

In this work, a novel series of aminoisoquinolinylamide derivatives 1a-c and 2a-f were synthesized via several reaction steps, starting from 2-methyl-4-nitrobenzonitrile (3) and 1-chloro-5-nitroquinoline (8). And their antiproliferative activities were screened against A375 human melanoma cell line compared to Sorafenib as a reference compound. Among them, compound 1b and 1c exhibited meaningful inhibitory activities. These results demonstrated that aminoisoquinolinylamide scaffold possesses the possibility as the treatment for melanoma.

The benzophenone derivatives(4-CH3O-4'-NO2 and 3,4'-di-NO2) are synthesized by the Fridel-Craft acylation and the nitration method. Electrochemical redox potentials of the benzophenone derivatives (4-CH3O, H, 3-Cl, 3-NO2, 4-NO2, 4-CH3O-4'-NO2, 3,4'-di-NO2) are measured by using cyclic voltammometry. In the relationship of summing Hammett value and redox potential, we find a proportional constant(σ) that shows a good relation with an electrochemical property and a reactivity of the benzophenone derivatives. The benzophenone substituted with the electron donating groups(4-OCH3 and 4-OCH3-4'-NO2) are higher the energy in the LUMO level, then increasing a band-gap energy(Eg), their Egs are obtained as a 3.94 eV and 3.59 eV, respectively.

Eu red phosphor was prepared by microwave synthesis. The crystal phase, particle morphology, and luminescent properties were characterized by XRD, SEM, and spectrofluorometer, respectively. The prepared :Eu particles had good crystallinity and strong red emission under ultravioletet excitation. The crystallite size increased with calcination temperature and satuarated at . The primary particle size initially formed was varied from 30 to 450 nm with microwave-irradiation (MI) time. It was found that the emission intensity of :Eu phosphor strongly depends on the MI time. In terms of the emission intensity, it was recommended that the MI time should be less than 15 min. The emission intensity of :Eu phosphor prepared by microwave syntehsis strongly depended on the crystallite size of which an optimal size range was 50-60 nm