http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Electro-Optical and Electrochemical Properties of Poly(phenylacetylene)
Gal, Yeong-Soon,Lee, Won-Chul,Jin, Sung-Ho,Park, Young-Il,Park, Jong-Wook,Lim, Kwon Taek,Kim, Sang Youl TaylorFrancis 2009 Molecular Crystals and Liquid Crystals Vol.513 No.1
<P> Poly(phenylacetylene)[Poly(PA)] was prepared by the polymerization of phenylacetylene with the catalyst of (NBD)PdCl2. The instrumental analysis data on the polymer structure revealed that the poly(PA) have the conjugated polyene backbone structure with phenyl substituents. The band gap energy of poly(PA) was estimated to be 2.51 eV and the photoluminescence spectra of poly(PA) showed that the photoluminescence peak is located at 439 nm, corresponding to a photon energy of 2.82 eV. The cyclovoltamograms of poly(PA) exhibited that the irreversible oxidation and reduction were occurred at 0.38 V and -0.93 V, respectively (vs Ag/AgNO3). The redox current value gradually increased as the scan rate increased.</P>
Gal, Yeong-Soon,Jin, Sung-Ho,Park, Jong Wook American Scientific Publishers 2014 Journal of nanoscience and nanotechnology Vol.14 No.8
<P>A new ionic polyacetylene derivative with furoyl substituents was prepared by the uncatalyzed polymerization of 2-ethynylpyridine by using 2-furoyl chloride in high yield. The polymer structure was characterized by such instrumental methods as NMR, IR, and UV-visible spectroscopies to have a polyacetylene backbone system with the N-(2-furoyl)pyridinium chloride. The electro-optical and electrochemical properties of poly[2-ethynyl-N-(2-furoyl)pyridinium chloride [PEFPC] were studied. The photoluminescence spectrum showed that the PL peak is at 578 nm corresponding to the photon energy of 2.15 eV. The cyclovoltammograms of PEFPC exhibited the irreversible electrochemical behaviors between the oxidation and reduction peaks. The oxidation current density of polymer versus the scan rates is approximately linear relationship in the range of 30 mV/sec-150 mV/sec. It was found that the kinetics of redox process is controlled by the reactant diffusion process from the oxidation current density of PEFPC versus the scan rates.</P>
Gal, Yeong-Soon,Jin, Sung-Ho American Scientific Publishers 2014 Journal of nanoscience and nanotechnology Vol.14 No.10
<P>Poly(2-ethynyl-N-iodopyridinium iodide) [PEIPI] was easily prepared via in-situ uncatalyzed polymerization of 2-ethynylpyridine by using iodine. The activated acetylenic bond of 2-ethynyl-N-iodopyridinium iodide formed at the initial reaction time was assumed to be susceptible to linear polymerization, followed by an identical propagation step that contains the produced macroanion and quaternized monomeric species. The polymer structure was characterized by various instrumental methods to have the conjugated polymer backbone system bearing the designed substituents. The electro-optical and electrochemical properties of polymer were studied. The UV-visible spectrum of PEIPI showed a characteristic absorption peak in the visible region up to 800 nm. The PL emission spectrum of PEIPI shows two peaks at 515 and 550 nm. The cyclic voltammetry of PEIPI exhibited irreversible electrochemical behavior between the oxidation and reduction peaks.</P>
Synthesis and Properties of Conjugated Cyclopolymers Bearing Fluorene Derivatives
Gal Yeong-Soon,Jin Sung-Ho,Lee Hyo-San,Kim Sang Youl The Polymer Society of Korea 2005 Macromolecular Research Vol.13 No.6
Fluorene-containing, spiro-type, conjugated polymers were synthesized via the cyclopolymerization of dipropargylfluorenes (2-substituted, X=H, Br, Ac, $ NO_{2}$) with various transition metal catalysts. The polymerization of dipropargylfluorenes proceeded well using Mo-based catalysts to give a high polymer yield. The catalytic activities of the Mo-based catalysts were found to be more effective than those of W-based catalysts. The palladium (II) chloride also increased the polymer yield of the polymerization. The polymer structure of poly(dipropargylfluorene)s was characterized by such instrumental methods as NMR ($^{1}H_{-}$, $^{13}C_{-}$), IR, UV-visible spectroscopies, and elemental analysis as having the conjugated polymer backbone bearing fluorene moieties. The $^{13}C_{-}$NMR spectral data on the quaternary carbon atoms in polymers indicated that the conjugated cyclopolymers have the six-membered rings majorly. The poly(dipropargylfluorene) derivatives were completely soluble in halogenated and aromatic hydrocarbons such as methylene chloride, chloroform, benzene, toluene, and chlorobenzene. The poly(dipropargylfluorene) derivatives were thermally more stable than poly(dipropargylfluorene) itself, and X-ray diffraction analyses revealed that the polymers are mostly amorphous. The photoluminescence peaks of the polymers were observed at about 457-491 nm, depending on the substituents of fluorene moieties.
Gal, Yeong-Soon,Jin, Sung-Ho,Shim, Sang-Yeon,Lim, Kwon Taek Taylor & Francis Inc. 2017 Molecular Crystals and Liquid Crystals Vol.654 No.1
<P>In this study, we introduce polyacetylene-based polyelectrolyte for quasi-solid-state dye sensitized solar cells (DSSCs) applications. A conjugated polyelectrolyte was prepared via the phosphorus oxychloride-activated polymerization of 2-ethynylpyridine. Poly[2-ethynyl-N(dichlorophosphino) pyridinium chloride] was applied for DSSCs. The photoluminescence (PL) spectrum of polymer solution showed the two maximum peaks of 471 nm and 489 nm corresponding to the photon energy of 2.64 eV and 2.54 eV, respectively. Quasi-solid-state DSSCs with a SnO2:F/TiO2/D719dye/solid-state electrolyte/Pt device was fabricated with Poly[2-ethynyl-N-(dichlorophosphino)pyridinium chloride], which shows the maximum power conversion efficiency (PCE) of 5.70%.</P>