http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
단소풍,윤희준,박종만,전찬우,남상용,신성철,황재영,김윤희 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
A new poly(octathiophene) based copolymer was designed and synthesized by the palladium catalyzed Suzuki coupling reaction. The structure of the newly obtained copolymer was confirmed by <sup>1</sup>H-NMR and IR. The number-average molecular weight (Mn) of the polymer was 36,000 with a polydispersity index of 1.15. The polymer has good solubility in common solvents such as chloroform, toluene, chlorobenzene, dichlorobenzene and tetrahydrofuran at room temperature. The optical, thermal and electrochemical properties of the polymer were characterized by UV-vis absorption, TGA and DSC and cyclovoltametry, respectively. A thin film transistor using the new polymer as an organic semiconductor was found to exhibit typical p-channel FET characteristics with a hole mobility of 5×10<sup>-4</sup> ㎠/Vs.
윤희준,단소풍,박성종,안은수,이지상,김윤희 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
In this study, a series of asymmetric anthracene derivatives (NDHPEA, TNDHPEA, ADHPEA) was synthesized by Suzuki cross-coupling reaction for organic thin film transistors (OTFTs). The structures of synthesized oligomers were confirmed by FT-IR, <sup>1</sup>H-NMR, <sup>13</sup>C-NMR and mass spectroscopy. They were found to be soluble in common organic solvents such as chloroform, dichloromethane and toluene. These oligomers have been characterized by UV-visible, photoluminescence (PL), cyclic voltammetry (CV), differential scanning calorimetry (DSC), thermal gravimetric analysis (TGA) and X-Ray diffraction (XRD) spectroscopy. Also, these oligomers have a high thermal stability at around 455 °C (T<sub>d</sub>). The solution processed OTFTs (Top-contact) were fabricated using synthesized oligomers spin-coated on Si/SiO<sub>2</sub>. The fabricated devices showed the field-effect mobility of 9.1 ×10<sup>-5</sup> ㎠/Vs for NDHPEA, 1.2 ×10 <sup>-2</sup> ㎠/Vs for TNDHPEA and 1.8 ×10<sup>-5</sup> ㎠/Vs for ADHPEA.
Development of new blue-emitting material for OLED
김란,유셴칭,단소풍,황재영,김윤희 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
In this study, we designed and developed new blue-emitting material with high color purity and efficiency for OLEDs. The new blue-emitting material was synthesized via the Suzuki cross coupling reaction. The structure of new material was confirmed by using FT-IR, <sup>1</sup>H-, <sup>13</sup>C-NMR, and mass spectroscopy. The optical, electrochemical and thermal properties have been investigated, and the molecular structure-property relationships were evaluated. The non-doped devices using EFPA displayed 2.55% maximum external quantum efficiency (EQE) with CIE color coordinates (0.166, 0.197). The doped device using 5% EFPA as a dopant showed maximum EQE of 2.90% and CIE coordinates of (0.142 0.107).
박광훈,김유진,하종진,단소풍,유셴칭,박성종,정대성,박찬언,권순기,김윤희 한국공업화학회 2014 한국공업화학회 연구논문 초록집 Vol.2014 No.1
To evaluate the effect of side chain characteristics on the photovoltaic performance of small molecules containing both benzodithiophene (BDT) and thienopyrroledione (TPD), we designed and synthesized two such molecules, one containing a branched 2-ethylhexyl (2EH) side chain on the BDT unit (BDTEH-TTPD) and the other containing a linear n-octyl (C<sub>8</sub>) side chain on the BDT unit (BDTO-TTPD). The optical and electrochemical properties and crystalline structures of these molecules were examined. Compared to BDTO-TTPD, BDTEH-TTPD showed stronger light absorption, longer-range ordering and shorter π-π stacking distances between backbones. As a result, the power conversion efficiency of a bulk heterojunction solar cell based on BDTEH-TTPD (2.40%) was substantially higher than that of the BDTO-TTPD device (1.12%)