• Bulletin of the Korean Chemical Society
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• v.9 no.6
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• pp.403-405
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• 1988

• Journal of the Korean Applied Science and Technology
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• v.30 no.3
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• pp.461-471
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• 2013

Use of low bandgap polymers is the most suitable way to harvest a broader spectrum of solar radiations for solar cells. But, still there is lack of most efficient low bandgap polymer. In order to solve this problem, we have synthesised a new low bandgap polymer and investigated its interaction with the ILs to enhance its conductivity. ILs may undergo almost unlimited structural variations; these structural variations have attracted extensive attention in polymer studies. In addition to this, UV-Vis spectroscopy, confocal Raman spectroscopy and FT-IR spectroscopy results have revealed that all studied ILs (tributylmethylammonium methyl sulfate [$N_{1444}$][$MeSO_4$] from ammonium family) and 1-methylimidazolium chloride ([MIM]Cl, and 1-butyl-3-methylimidazolium chloride [Bmim]Cl from imidazolium family) has potential to interact with polymer. Further, protic ILs shows enhanced conductivity than aprotic ILs with low bandgap polymer. This study provides the combined effect of low bandgap polymer and ILs that may generate many theoretical and experimental opportunities.

• Journal of the Korean Chemical Society
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• v.27 no.1
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• pp.1-8
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• 1983

Solvent effects on nucleophilic substitution reaction of naphthalene sulfonyl chlorides with pyridine in protic and aprotic solvent have been studied by means of conductometry. Results showed that the rate constants increased with dielectric constants for protic solvents, while they decreased with dielectric constants for aprotic solvents, except for acetonitrile which has a higher dielectric constant but had also greater rate constant. The rate constants were shown to be more susceptible to polarity-polarizability parameter, , than to hydrogen bond donor acidity parameter, ${\alpha}$, indicating that the pulling effect of hydrogen bonding solvent.

• Journal of the Korean Chemical Society
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• v.35 no.4
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• pp.379-388
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• 1991

We synthesized the binuclear Tetradentate Schiff base cobalt (II) complexes; [Co(II)$_2$(SMPD)$_2$(L)$_2$] and [Co(II)$_2$(SPPD)$_2$(L)$_2$] (where, SMPD: N,N'-bis(salicylaldehyde)-m-phenylenediimine, SPPD: N,N'-bis(salicylaldehyde)-p-phenylenediimine, L: Py, DMSO and DMF). We identified the binuclear structure of these complexes by elemental analysis, IR-spectrum, and T. G. A. According to the results of cyclic voltammetry and DPP measurements in aprotic solvents containing 0.1M TEAP as supporting electrolyte, it was found that diffusionally controlled redox process of two step for one electron was reversible or quasi reversible process in 0.1M TEAP-pyridine and 0.1M TEAP-DMSO solution at mononuclear complexes; [Co(II)(SOPD)(L)$_2$]. But, we knew that diffusionally controlled reduction processes of four steps with one electron for binuclear [Co(II)$_2$(SMPD)$_2$(L)$_2$] and [Co(II)$_2$(SPPD)$_2$(L)$_2$] complexes was Co(III)$_2\;{\longrightarrow^e}$ Co(III)Co(II) ${\longrightarrow^e}$ Co(II)$_2\;{\longrightarrow^e}$ Co(II)Co(I) ${\longrightarrow^e}$ Co(I)$_2$ in aprotic solvents.

• Journal of the Korean Chemical Society
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• v.34 no.1
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• pp.51-62
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• 1990

Pentadentate Schiff base cobalt(II) complexes; Co(II)(Sal-DET) and Co(II)(Sal-DPT) were synthesized and these complexes were allowed to react with dry to form oxygen adducts of cobalt(II) complexes such as [Co(III)(Sal-DET)]$_2O_2$ and [Co(III)(DPT)]$_2O_2$ in aprotic solvents. These complexes have been identified by IR spectra, TGA, DSC, magnetic susceptibility measurements, and elemental analysis. It has been found that the oxygen adadduct complexes of $\mu$-peroxo type have hexaccordinated octahedral configuration with pentadentate schiff base cobalt(II) and oxygen, but the mole ratio of oxygen to cobalt(III) complexes of first step for oxygen adduct formation reaction of cobalt(II) complexes in aprotic solvents are 1:1. The redox reaction processes of Co(II)(Sal-DET), Co(II)(Sal-DPT), and oxygen adduct of cobalt(II) complexes were investigated by cyclic voltammetry and DPP method with glassy carbon electrode in 0.1M TEAP-DMSO and 0.1M TEAP-pyridine. As a result the reduction reaction processes of Co(III)/Co(II) and Co(II)/Co(I) for cobalt(II) complexes and oxygen adducts of cobalt(II) complexes are two irreversible steps of one eletron process, and reaction processes of oxygen for oxygen adducts complexes were quasireversible and redox range of potential was $E_{pc}$ = -0.97V∼-0.86V and $E_{pa}$ = -0.87V ∼ 0.64V.

• Bulletin of the Korean Chemical Society
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• v.23 no.11
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• pp.1611-1615
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• 2002

The ring opening of epoxides with elemental iodine and bromine in the presence of three diamine podands 7-9 as new catalysts affords vicinal iodo alcohols and bromo alcohols in high yields. This new procedure occurs regioselectively under neutral and mild conditions in various aprotic solvents even when sensitive functional groups are presented.

• Proceedings of the Membrane Society of Korea Conference
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• 2004.05b
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• pp.69-72
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• 2004

So far the most practical polymer electrolytes are gel systems, which contain a polymeric matrix, a lithium salt, and aprotic organic solvents. This has met with success but has had disadvantages that the addition of solvents promotes deterioration of the electrolyte's mechanical properties and increases its reactivity towards the lithium metal anode.[1](omitted)

• Journal of the Korean Chemical Society
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• v.13 no.4
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• pp.333-339
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• 1969

Synthesis and chemical properties of 1,4-bisdiazo-2-butene have been studied. 1,4-Bisdiazo-2-butene which was very unstable produced in protic solvents 1,3-butadiene and one unidentified substance instead of ring compounds. The reaction in aprotic solvents remains for further investigations.

• Journal of the Korean Chemical Society
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• v.13 no.4
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• pp.341-346
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• 1969

The synthesis and pyrolysis of trans-2-butenedial ditosylhydrazone with sodium methoxide in aprotic solvents have been studied to investigate the products of pyrolysis. The pyrolysis of dry lithium salt of tosylhydrazone also has been made, one of its products was acetylene which might come from a certain strained ring compound.

• Bulletin of the Korean Chemical Society
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• v.27 no.12
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• pp.2058-2060
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• 2006