• 폴리머
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• 제31권6호
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• pp.469-473
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• 2007

본 연구에서는 OTFT의 유기물 반도체 층으로 쓰일 수 있는 oligo(3-methylthiothiophene)를 전이금속 촉매인 palladium 촉매를 이용한 커플링 중합법을 이용하여 합성하였다. Thiophene 올리고머의 단량체를 합성하기 위해서 metal halogen exchange reaction에 의하여 3-methylthiothiophene를 합성하였고, thiophene 구조의 2, 5번의 위치에 brome기를 도입함으로써 최종적으로 2,5-dibromo-3-methylthiothiophene를 합성하였다. 합성된 단량체와 올리고머는 $^1H-NMR$, ATR 분석을 통하여 그 구조를 확인하였으며, TGA로 열적 안정성을 관찰하였고 진공 증착법(thermal evaporation)을 이용하여 기판상에 증착시켜 OTFT 소재로서의 적용 가능성을 확인하였다.

• Bulletin of the Korean Chemical Society
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• 제32권7호
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• pp.2446-2448
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• 2011

• 한국표면공학회:학술대회논문집
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• 한국표면공학회 2016년도 추계학술대회 논문집
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• pp.147-147
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• 2016

In general, organic electrochromic (EC) materials have been known to be electrochemically unstable during the ionic exchange process. One effective method to realize stable EC materials is incorporating graphene derivatives in the polymer matrix, by using the strong interaction between graphene derivatives and polymer. However, previous studies are limited graphene derivatives. In this study, we developed a polymer-graphene derivative complex with the chemical assistance of a surfactant (octadecylamine, ODA). Surfactant-assisted graphene oxide (GO-ODA) was introduced as a protective layer on the electrochromic poly (3-hexyl thiophene) (P3HT) films by the Langmuir-Schaefer method. The deposition of GO-ODA protective layer with high coverage was confirmed by atomic force microscopy. The strong interactions between GO-ODA and P3HT were examined with UV-Vis spectrophotometry and X-ray photoelectron spectroscopy. Electrochemical and electrochromic investigations revealed that the GO-ODA layer greatly improved the long-term cyclability of the P3HT film. These findings imply that the GO-ODA complex has a significant role in creating stable EC cycling, due to its strong interaction with the P3HT film.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2004년도 Asia Display / IMID 04
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• pp.665-668
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• 2004

Oligothiophene derivatives have been well-known as an p-type channel material.$^1$ Here, we report novel oligothiophene derivative containing methylene linkage as an p-type channel material. Oligothiophene derivative containing methylene linkage BHTM was synthesized and characterized. BHTM was prepared by a palladium-catalyzed cross-coupling reaction via zinc-substituted thiophene. BHTM exhibited high thermal stability and at least one transition temperature.

• Archives of Pharmacal Research
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• 제22권5호
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• pp.496-501
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• 1999

The reaction of epi-androsterone with cyanoacetyl hydrazine (2) gave the hydrazone derivative 3. The reactivity of 3 towards chemical reagents was studied to give pyridine, thiazole and thiophene derivatives.

• 한국정보디스플레이학회:학술대회논문집
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• 한국정보디스플레이학회 2005년도 International Meeting on Information Displayvol.II
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• pp.1370-1373
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• 2005

Oligothiophene derivatives have been wellknown as an p-type channel $material.^1$ Here, we report novel oligothiophene derivative containing alkylene linkage as an p-type channel material. Oligothiophene derivative containing alkylene linkage BE4TH was synthesized and characterized. BE4TH was prepared by a palladium-catalyzed crosscoupling reaction via zinc-substituted thiophene. B4TH and BH4TH exhibited high thermal stability and at least one transition temperature.

• 폴리머
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• 제37권6호
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• pp.694-701
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• 2013

프탈이미드 유도체와 티오펜 단량체들을 이용하여 새로운 고분자인 poly((5,5-(2-butyl-5,6-bisdecyloxy-4,7-dithiophen-2-yl-isoindole-1,3-dione))-alt-(2,5-thiophene))(T-TI24T)를 Stille법을 이용하여 합성하였다. T-TI24T의 수평균 분자량은 86500 g/mol로 매우 높으며 클로로포름, 1,2-디클로로벤젠, 톨루엔과 같은 용매에 매우 잘 용해된다. 또한 $380^{\circ}C$까지 매우 우수한 열적 안정성을 갖고 있다. T-TI24T는 꽤 낮은 호모에너지 준위(-5.33 eV)를 갖고 있다. 서로 다른 T-TI24T와 (6)-1-(3-(methoxycarbonyl)-{5}-1-phenyl[5,6]-fullerene(PCBM)의 무게비를 갖는 블렌드를 광활성층으로 하는 태양전지를 제작하여 특성을 살펴본 결과 고분자와 PCBM의 비율이 1:3일 때 가장 최적화된 결과를 보였으며, 이 때 광전변환 효율과 개방전압은 각각 0.199%와 0.99였다. T-TI24T 기반 태양전지들은 비록 매우 작은 광전변환 효율을 갖지만 잘 알려진 P3HT:PC61BM으로 구성된 태양전지와 비교해 큰 매우 큰 개방전압을 갖는다(약 0.5 V).

• Bulletin of the Korean Chemical Society
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• 제26권12호
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• pp.2021-2026
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• 2005

The oxidation of cytidine 1 and inosine 5 by sodium metaperiodate followed by the reaction of the product with $CH_3I$ in NaOH afforded 2',4'-dihydroxyhexopyranosyl derivatives 2 and 14 respectively. The reaction of thiophene-2-carboxylic acid or furfural with cytidine were taken place via cycloaddition afforded adducts 3 and 4 respectivily. The bromination of inosine 5 or its 2',3'-O-isopropylidine inosine 6 led to the formation of 8-bromoanalogue 7 and 8, respectively. The reaction of 8-bromo-2',3'-O-isopropylidine inosine (8) with ethylglycinate hydrochloride afforded 8-ethoxycarbonylmethylaminoinosine 9. The alkylation of the compound 6 with urea led to the formation of 3-carbonylaminoinosine 10. The oxidation of 6 with DCC afforded 4'-formyl derivative 11, which on reaction with ethyl glycinate hydrochloride followed by reaction with sodium cyanoborohydride afforded 12, while the treatment of dialdehyde inosine 13 with ethyl cyanoacetate in the presence of 0.5 N NaOH afforded compound 15.

• 대한화학회지
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• 제44권6호
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• pp.513-517
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• 2000

TTF (tetrathiafulvalene) 유도체의 전구체로서 5,6-dimethyl-1,3-dithiolo[4,5-b][1,4]dithiin-2-thione (화합물 3)을 로손반응에 의하여 합성하였다. 치환기의 종류에 따라 1,4-dithiin이나 티오펜이 포함된 두 가지의 서로 다른 생성물이 얻어졌고, 이들은 $^{13}C$ NMR과 고 분해능 전자충돌(HREI) 질량분석 분광학으로 특성화하였다. 화합물 3의 합성은 X-선 구조분석으로도 확인되었다. 결정학적 자료: 삼사정계, 공간군 P1, a=4.145(2)${\AA}$, b=10.600(2)${\AA}$, c=12.279(2)${\AA}$, ${\alpha}=71.440(10)^{\circ},\;{\beta}=84.30(2)^{\circ},\;{\gamma}=87.31(2)^{\circ}$, Z=2, $R(wR_2$)=0.0559(0.1416). 두 가지 생성물의 생성 기구를 비교하여 설명하였다.