C형 간염바이러스항체 검출을 위한3세대 효소면역측정 시약의 비교

이장혁,서순팔,기승정,송정원,신명근,신종희,양동욱,김세종 대한임상병리학회 1997 대한임상병리학회지 Vol.17 No.4

N-Docosylquinolinium-TCNQ LB막의 광학적 특성

신동명 弘益大學校 科學技術硏究所 1994 科學技術硏究論文集 Vol.4 No.-

Langmuir-Blodgett (LB) technique is one of the most possible candidate for the development of the devices using ultrathin organic film. For the electrical application of the organic films, one of the important factor is enhancing the electrical conductivity. During the past decade many papers have been published in the field of high electrical conducting LB films. Recently, Andre Barraud et al. have shown that the use of molecular association involving TCNQ-Iodine charge transfer(CT) systems can give rise to a considerable increase in the electrical conductivity. The present paper is devoted to the physical and electrical characteristics of N-docosylquinolium-TCNQ films compared with the films doped with 12. Iodine affects the degree of charge transfer and the conductivity of the films. The UV-visible absorption spectra of the film doped with 12 shows that the peak of 13-which had electronic transition at 300∼350nm and (TCNQ-)2 dimer absorption disappered. The in-plane electrical conductivity of the films doped with 12 were 1.4X10-6S/cm. which is three orders of magnitude higher conductivity than undoped LB films. But this enhanced conductivity was relatively low in compared with the value which previously reported from A. Barraud et al.. the film structural difference between Y and Z-type may cause the conductivity. Another possible reasons of the structural difference was the overlapping TCNQ anion radical in LB films.

전기발광소자에서 프탈로시안 카퍼의 역할

申東明,金正賢 弘益大學校 科學基術硏究所 1999 科學技術硏究論文集 Vol.10 No.2

Interfacial properties of electrode and organic thin layer is one of the most important factor in performing a light emitting diodes(LED). Phthalocyanine copper was used as a buffer layer to improve interface characteristic, so that device efficiency was improved. In this study, LEDs were fabricated as like structures of ITO / N,N' - diphenyl - N,N' - di(m-tolyl) - benzidine(TPD) / 8-Hydroxyquinoline aluminum(Alq) / Al and ITO / N,N'- diphenyl - N,N' - di(m-tolyl) - benzidine(TPD) / 2- (4-biphenylyl) - 5(4-tert-butyl-phenyl) -1,3,4 -oxadiazole(PBD) / Al. In these devices, CuPC was layered at electrode/organic layer interface. As position is changing and thickness is changing, devices showed different phenomena respectively. We showed in this study that luminescence efficiency was improved with CuPC layer in LEDs. Characteristic of CuPC will be discussed with I-V curve, EL.

단층구조의 유기전기발광 소자 제작에 대한 연구

申東明,林成澤 弘益大學校 科學技術硏究所 1998 科學技術硏究論文集 Vol.9 No.2

In this work, optical properties of organic electroluminescent(EL) cell fabricated with dye-doped polymer. Poly(9-vinylcarbazole) was doped with fluorescent material, rubrene, and fabricated to thin film on quartz plate via spin-casting technique. In case of undoped PVK thin film, an blue-shift of emission peak was observed, which may be obtained through annealing process. On the other hand, rubrene-doped PVK thin film did not show significant emission shift and linear increase with doping ratio. This results provide an maximum improvement of emission efficiency obtainable via annealing process. Relative increasement of emission intensity with doping ratio was decreased by the annealing process. From these results, we could conclude that we can improve the emission efficiency of dye-doped polymer thin film via annealing process. In fabricating the EL device, one can utilize this results and obtain improved EL devices.

4-(4-Nitro phenylazo)-1-naphthol의 광화학

申東明 弘益大學校 科學技術硏究所 1992 科學技術硏究論文集 Vol.2 No.-

The acid and base properties of organic dyes are of current interest. The 4-(4-nitrophenylazo)-1-naphthol(NPNOH) was purified, and characterized spectroscopically. The azo-compound has electron donor and acceptor, which generate large solvatochromic behavior. The electronic transition energies of the acid(-OH) and base(-O-) forms were 458nm(76.4 kcal/mol) and 634nm(55.2 kcal/mol). The pKa value calculated was 15.5 which was fairly large for most organic dyes. The distribution of the dye in micellar solutions(SDS, CTAB, ...) will be discussed. The head-group charge in surfactant molecules are important for the electronic transition energy and orientation of the dye molecules in micellar solutions. The electronic transition energies will be compared with those of Oalkylated NPNOH, (NPNOR).

간질환자의 간질 관련 외상

오동호,박운규,이영주,김희태,김승현,김주한,김명호,신동진 대한신경과학회 1998 대한신경과학회지 Vol.16 No.4

유기전기발광소자 제작을 위한 고효율 적색 유기 발광체 개발 및 공정 확립을 위한 연구

申東明 弘益大學校 科學技術硏究所 2001 科學技術硏究論文集 Vol.12 No.-

In this study, we synthesized a red-light emitting material, which is based on malononitrile moiety, and applied it as a red light emitter in OLED. The OLEDs structure can be described as indium tin oxide(ITO)/hole transporting layer/emitting layer/electron transporting layer/LiF/Al. The hole transporting layer was composed of N,N-diphenyl-N,N-di(3-methylphenyl)-1,1-biphenyl-4,4-diamine(TPD). The electron transporting layer consists of tris(8-hydroxyquinolinato) aluminum(Alg3). A1g3 exhibits high performance as an electron transport material and an emitting material. Emitting layer was composed of 2,6-dimethyl-4H-pyran-4-ylidene)malononitrile(d-DCM). The UV/visible absorption spectra and photoluminrscent(PL) spectra of the d-DCM showed luminescence maximum at 484nm and maximum at 611nm. Red color emission peak was confirmed at 650nm. One of the weak points to these systems is the difficulty to fabricate dye-doped monomeric organic layer. To realize the organic multi-color electroluminescence display with fine pixels, it is required to fabricate the light-emitting layer with single molecule in OLEDs. In this system, the characteristics of current density-applied voltage were typical one of that of diodes.

폐분체 도료의 재활용 방안에 관한 연구

신동철,김영훈,이순기,김경원,신선명,강헌찬 동아대학교 환경문제연구소 1999 硏究報告 Vol.22 No.1

With the progress of industry, the much more demand of paint around us grows rapidly. However, the whole quantity of raw materials used to make powder coatings is presently imported to fill the domestic needs. Moreover, it is well known that the waste powder coatings from the domestic industries are mostly incinerated. The method of destructing the waste powder coatings by fire causes VOC to be generated, and this results in some serious environmental problems such as air pollution and so on. Therefore, the effective and proper measure must be devised to reuse the waste powder coatings for the purpose of eliminating waste of resources and avoiding the outflow of foreign currency. This study aims to make the plan to recycle the waste powder coatings, and its conclusion is drawn as follows: First, it can be seen that the waste powder coatings with a weak electrostatic power restore gradually to the original state of electrostatic power through the process of fusion and retreatment. Second, it can be estimated that those coatings, with the use of the cyclon, can be removed by dividing a powder of particles less than 10㎛. Third, it can be ascertained that the possibility of reusing the waste powder coatings is proved when it is divided into particles by cyclon and a revolving screen after the process of fusion, rolling, crushing and pulverization.

불포화폴리에스터(USPE)수지의 경화동역학에 관한 연구

申東明,林成澤 弘益大學校 科學技術硏究所 1997 科學技術硏究論文集 Vol.8 No.-

In this work we investigated the curing process of unsaturated polyester resing in styrene system. An thermosetting resin experiences a complicated mechanism in curing reaction with many annexes. We used the Lee's and Ryan & Dutta's model to predict such mechanism. The octadodecanoxy derivative of thephthalocyanine which has such long hydrocarbon chains around the skeleton of the phtalocyanine was synthesized. First of all, ortho-catechol was treated with 2 moles of 1-bromododecane to yield ortho-didodecanoxybenzene(I). Second, bromination of I resulted in dibromo-didodecanoxy-benzene(Ⅱ) where the para positions to the dodecanoxy groups were brominated. Finally, reaction of Ⅱ with an excess of CuCN under an N₂atmosphere gave the intermediate dicyano-didodecanoxy-benzede(Ⅲ), in situ, and futher heating in dry DMF with more CuCN gave the final product, octadodecanoxy derivative of the phthalocyanine. The synthetic method developed herein provides a general way to synthesize the variety of the phthalocyanines which displays many different substituents such as long hydrocarbons around its skeleton and contains a various metal inside of the phthalocyanine.

전자 주계와 전자 받게를 가진 분자의 쌍극자 모멘트 계산

申東明,林成澤 弘益大學校 科學技術硏究所 1995 科學技術硏究論文集 Vol.6 No.-

Computational calculations of molecular structure, molecular energy, dipole moment, solvation energy, conformation and molecular dynamics are of current interest. In this study, we calculate dipole moment of donor-acceptor aromatic molecules which exhibit dipole moments in a range of 7-10 debye. Since the dipolar aromatic molecules are important for the fabrication of nonlinear optic devices, characterization and estimation of dipole moment are prerequisite. The software used for the calculation of dipole moment was Hyper Chem. Seven different methods were tried to estimate the dipole moment. CNDO, INDO, MINDO/3, MNDO, AM1, PM3, and ZINDO/1. For small and rigid molecules, the calculated dipole moments are in a small range. ZINDO/1 give better fitting for the molecules containing sulfur atom.