• Applied Chemistry for Engineering
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• v.21 no.4
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• pp.424-429
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• 2010

6-Alkyl-3-chromonealdehyde (2,2-dialkyl)hydrazone derivatives were synthesized by dehydration condensation. They are green-emitting materials for organic light emitting device (OLED) composed of electron acceptor of 6-alkyl-3-chromonealdehydes and electron donor of 2,2-dialkylhydrazones in a conjugated structure. The structural properties of reaction products were analyzed by FT-IR and $^1H$-NMR spectroscopy. The thermal stabilities and reactivities were measured by melting points and yields. The UV-visibles and PL properties were also determined by excitation spectra and emission spectra, respectively.

• Applied Chemistry for Engineering
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• v.20 no.6
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• pp.670-674
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• 2009

3-Chromonealdehyde(2,2-disubstituted)hydrazone derivatives were synthesized by dehydration condensation. They are green-emitting materials for organic light emitting device (OLED) composed of electron acceptor of 3-chromonealdehydes and electron donor of 2,2-disubstituted hydrazones by a conjugated structure. The structural properties of reaction products were analyzed FT-IR and $^1H-NMR$ spectroscopy. The thermal stabilities and reactivities were measured by melting points and yields. The UV-visibles and PL properties can be determined by excitation spectra and emission spectra, respectively.

• Journal of the Korean Chemical Society
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• v.54 no.3
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• pp.350-353
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• 2010

• Proceedings of the Korea Air Pollution Research Association Conference
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• 2002.11a
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• pp.273-273
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• 2002

대기 중 기체상 알데히드와 케톤류 등의 자동분석을 개발하고 이를 실제 대기 분석에 응용하였다. 본 분석장치는 분석 기체를 흡수 농축하는 확산 스크러버와 홉수액을 분석하는 고성능 액체크로마토 그래피로 구성되어 있다. 분석기체는 스크러버 속에서 기체와 반대방향으로 흐르는 DNPH 흡수액에 흡수되어 하이드라존을 형성하고 HPLC에서 분리 검출된다. 표준편차 3배로 정의한 본 방법의 검출한계는 수ppt로 매우 낮아 환경대기의 분석이 가능하다. (중략)

• Polymer(Korea)
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• v.30 no.3
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• pp.210-216
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• 2006

To use the filter materials for selective removal of carbonyl compounds in cigarette mainstream smoke, hydrazine such as 2,4-dinitrophenylhydrazine (2,4-DNPH) and dansylhydrazine (DAH) impregnated adsorbents were prepared with perchloric acid or phosphoric acid as an accelerator in hydrazone formation reaction. Changes of molecular structure and morphology of adsorbents in various of impregnator were investigated by FTIR/ATR and SEM. Impregnation amount caused by reaction time, acid type and impregnation reagent, and the adsorption properties of carbonyl compounds in cigarette mainstream smoke were studied. Amounts of impregnation increased with increasing reaction time. The removal amount for vapor phase carbonyl compounds by 2,4-DNPH impregnated adsorbent was higher than that of dansylhydrazine impregnated adsorbent. The selectivity of 2,4-DNPH impregnated polyacrylic type adsorbent was superior to those of other adsorbents. This result indicates that the 2,4-DNPH impregnated polyacrylic adsorbent is applicable to cigarette filter material because of its fast reactivity and porosity.