• Proceedings of the Optical Society of Korea Conference
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• 2004.07a
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• pp.122-123
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• 2004

• Proceedings of the Korean Institute of Surface Engineering Conference
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• 1998.05a
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• pp.122-123
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• 1998

• Bulletin of the Korean Chemical Society
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• v.10 no.2
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• pp.158-161
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• 1989

The hydrophobic interaction occurring between rhodamine 6G and tetraphenylborate anions has been investigated with surfactants by absorption and fluorescence studies. In the order of tetraphenylborate, tetrakis(4-fluorophenyl)borate, and tetrakis[3,5-bis(trifluoromethyl)phenyl]borate the hydrophobicity is found to be increased.

• Journal of the Korean Wood Science and Technology
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• v.40 no.5
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• pp.335-342
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• 2012

To prepare the eco-friendly fire retardant wood, Japanese red pine (Pinus densiflora), Hemlock (Tsuga heterophylla), and Radiata pine (Pinus radiata) were treated with inorganic chemicals, such as sodium silicate, boric acid, ammonium phosphate, and ammonium borate. Different combination and concentration of those chemicals were impregnated by vacuum/pressure treatment methods. The electron-beam treatment was used to increase the chemical penetration into the wood. The fire performance of the fire retardant treated wood was investigated. The penetration of chemicals into the wood was enhanced after electron beam treatment. Ignition time of the treated wood was the most effectively retarded by sodium silicate, ammonium phosphate, and ammonium borate. The most effective chemical combination was found at 50% sodium silicate and 3% ammonium borate, which satisfied flammability criteria for a fire retardant material in the KS F ISO 5660-1 standards.

• Journal of the Korean Chemical Society
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• v.56 no.6
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• pp.673-678
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• 2012

Using potentiodynamic and linear polarization method, the atmospheric effect on the corrosion of iron in borate buffer solution was investigated. The corrosion of iron was heavily influenced by the degree of oxygen concentration. The supply of reduction current was increased by the reduction of dissolved oxygen, and the corrosion potential of iron was shifted to the positive side. The $OH^-$ ion, which was produced through the reduction of either water or oxygen, significantly increased the $OH^-$ ion concentration inside of the electrical double layers of iron electrode, and facilitated the adsorption of $OH^-$ ion on the surface of the iron electrode. The adsorption of $OH^-$ ion on the iron electrode can be explained either by Langmuir isotherm or by Temkin logarithmic isotherm.

• 한국생물공학회:학술대회논문집
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• 2000.04a
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• pp.512-515
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• 2000

In this study, ${\delta}-aminolevulinic$ acid, porphobilinogen, glycine and levulinic acid were succesfully separated by capillary electrophoresis(CE). We established the separative conditions of the mixture containing four components by CE. The borate buffered solution was used for CE electrolyte, and its pH was adjusted to $9.25{\sim}9.42$. Under constant current or constant voltage, higher concentraion of borate produced better resolution of four components, but adversely affected migration rates , resulting in longer analysis time. While migration time was faster with increase in applied voltage, but adversely affected resolution. Each component was separated well in borate buffer of 30mM at the applied voltage of 20kV.

• Journal of Conservation Science
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• v.8 no.1 s.11
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• pp.23-27
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• 1999

This study was conducted to investigated the feasibility of using a fused borate rod for the remedial treatment, using pine specimens decayed by Tyromyces palustris and Gloeophyllum trabeum. The borate rod appears to be a useful remedial product for eliminating as well as preventing decay. However, the easiness of retention gradient of boron according to the distance from a rod treatment site, is required for more effective treatment. The effect of the extension of diffusion period and rod size on retention gradient of boron should be fully investigated for successful remedial treatments using borate rod.

• Journal of the Korean Chemical Society
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• v.26 no.5
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• pp.340-348
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• 1982

The presence of 10 mole percent triphenyl borate accelerated dramatically the rate of reduction of structurally different sulfoxides with borane in tetrahydrofuran at room temperature, compared to the slow reduction with borane itself. Tetramethylene sulfoxide underwent complete reduction in 5 min and diethyl sulfoxide, dibenzyl sulfoxide and benzylphenyl sulfoxide were reduced quantitatively within 1h, whereas the reduction of diphenyl sulfoxide was rather slow, giving diphenyl sulfide in 90% yield in 24h. Boron trifluoride etherate and triethyl borate were less effective than triphenyl borate. A possible mechanism is presented.

• Journal of Photoscience
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• v.5 no.3
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• pp.111-120
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• 1998

Sensitized photolysis of two onium borates (diphenyliodoium and dimethylphenacylsulfonium tetrakis(pentafluorophenyl)borate, 1a and 2a , respectively) and cationic photopolymerization of an epoxy monomer by the photolysis were investigate. The onium borates were sensitized by the excited singlet of the athracenes(non-substituted, 9-methyl-and 9, 10-dimethylanthracene) and generated acid by decomposing teemselves. The quantum yields of photobleaching of the anthracenes($\Phi$-AH) and acid generatiion (øacid) by the onium borates were the same order as those of the corresponding onium salts in aerated solutions (methanol and acetoitrile) and in argon(Ar) saturated acetonitrile. However, in the photolysis of the iodonium borates 1a in Ar saturated MeOH , øacid was much higher than the corresponding ø-AH. The acid generated by the photolysis of the onium borates initiated cationic polymerization of an epoxy monomer. The values of both rate of polymerization (Rp) and degree of conversion on the photopolymerization for the iodonium borated 1a were higher than those of the sulfoium borate 2a. In the photopolymerization for the iodonium borate 1a, both the Rp value and the degree of conversinio increased upon the addition of glycerol as a hydrogen donor. It is suggested that the increase of both values may be caused with the increase of øacid by addition of glycerol.

• Journal of the Korean Chemical Society
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• v.58 no.1
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• pp.9-16
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• 2014

In a borate buffer solution, the growth kinetics and the electronic properties of passive film on nickel were investigated, using the potentiodynamic method, chronoamperometry, and single- or multi-frequency electrochemical impedance spectroscopy. The oxide film formed during the passivation process of nickel has showed the electronic properties of p-type semiconductor, which follow from the Mott-Schottky equation. It was found out that the passive film ($Ni(OH)_2$) of Ni formed in the low electrode potential changes to NiO and NiO(OH) while the electrode potential increases.