• Journal of the Optical Society of Korea
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• v.1 no.2
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• pp.94-99
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• 1997

In this paper, we calculate the four coefficients for the quantum theory of multiwave mixing including a local-field correction resulting from dipole-dipole interactions. We make contact with the semiclassical calculations of probe absorption and four-wave-mixing coupling coefficients, and illustrate the effects of local field corrections on resonance-fluorescence and coupled-mode-fluorescence spectra. The method uses the hybrid quantum-Langevin-equation master-equation approach of An and Sargent.

• Journal of the Korean Graphic Arts Communication Society
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• v.12 no.1
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• pp.159-168
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• 1994

The Aggregation State of thin vapor deposite Film made by Cyanine Dye were changed into Monomeric molecular state(M) and Dimeric Aggregation(D) at the acidic treatment, into reversible H-Aggregation (H) at alkalic gas or heat treatment. Photo-electric properties were higher H than D and M, this stats were effective in enhancing Photoelectric-conversion characteristic. Substitute group of Meso-Position being stronger electronic Donors, Electronic density is higher and Electric conductivity is enhanced, we confirmed Oscillator Strength calculated by PPP-Molecular Orbital Calculation and Absorption Spectra at solvent stats were agreed good.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2003.07b
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• pp.1026-1029
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• 2003

Polycarbazole derivatives have been investigated for emitting materials of PLED. We synthesized two polymers containing carbazole chromophor, which are different from bonding position. We investigated the spectra of their absorption, photoluminescence, electroluminescence.

• The Bulletin of The Korean Astronomical Society
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• v.22
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• pp.6-6
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• 1997

• YAKHAK HOEJI
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• v.8 no.2
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• pp.59-61
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• 1964

A new alkaloid, named tenuidine was isolated from Polygala tenuifolia Willdenow. Its molecular formula corresponded to $C_{21}$ $H_{31}$ $O_{5}$ $N_{3}$ and its constants were m.p.256, [.alpha.]$_{D}$$^{18.5}$=1200.deg.(ethanol). Its infrared absorption spectra exhibited bands at 3.300, 1600, 1580, 1500 $cm^{-1}$ / confirming indole ring and at 2800-2700 $cm^{-1}$ / indicating quinoline ring. Bands at 1610, 1530 $cm^{-1}$ / indicated the presences of benzene ring and 1642$cm^{-1}$ / carbochelate.e.e.

• Bulletin of the Korean Chemical Society
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• v.33 no.1
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• pp.33-34
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• 2012

• 한국정보디스플레이학회:학술대회논문집
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• 2009.10a
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• pp.1405-1407
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• 2009

We prepared polystyrene-b-poly(2-vinyl pyridine) (PSb-P2VP) lamellar films which is hydrophobic block-hydrophilic polyelectrolyte block polymer have 57 kg/mol-b-57 kg/mol. The result of UV-visible absorption spectra supported that effect of poly(ethylene oxide) on the band gap tuning of PS-P2VP photonic gel like salt effect.

• Bulletin of the Korean Chemical Society
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• v.30 no.7
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• pp.1667-1670
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• 2009

• Bulletin of the Korean Chemical Society
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• v.19 no.1
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• pp.83-86
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• 1998

The luminescence spectra of Eu(Ⅲ) complexes have been measured as a function of molar metal-to-ligand ratio and pH. The ligands used in this study are tridentate iminodiacetate (IDA) and methyliminodiacetate (MIDA). The 620 nm emission band, attributed to the $^5D_0{\to}^7F_2$ transition, is monitored to investigate the optimum condition for $EuL_3^{3-}$ complex formation in aqueous state. In addition, the sensitivity of the 465 nm absorption band, attributed to the $^7F_0{\to}^5D_2$ transition, to the ligand environment has been also investigated.

• Bulletin of the Korean Chemical Society
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• v.11 no.3
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• pp.235-238
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• 1990

Complexes of the type[Co(T)(L-pro)], where T is the quadridentate $N_2O_2$-type ligand, N,N'-dimethylethylenediamine-N,N'-diacetate or N,N'-dimethylethylenediamine-N,N'-di-$\alpha$-butyrate, have been prepared. The complexes were separated into the two stereoisomers, $\Delta$-s-cis-[Co(T)(L-pro)] and $\Lambda$-s-cis-[Co(T)(L-pro)]. They were characterized by their proton magnetic resonance, absorption and circular dichroism spectra, elemental analyses.