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2-methyltetrahydrocarbazole-Chloranil Complex의 이온間 電荷 移動相互作用에 미치는 溫度 및 溶媒效果에 관한 硏究(第一報)
文正大 釜山大學校 師範大學 1978 교사교육연구 Vol.5 No.2
Absorption band for 2-methyltetrahydrocarbazole-ChloraniI Charge-Transfer Complex (2-MTHC CT complex) was determined by means of UV spectrophotometer in two solvent systems carbon tetrachloride and ethylene chloride, and their maximum absorption bands were found to be at 665nm, 516nm in carbon tetrachloride and 665nm, 525nm in ethylene chloride, respectively. Formation constant (Kf) and molar absorptivity (ελ)of these 2-MTHC CT complex have been determined by Benesi-Hildbrand method. This 2-MTHC CT complex was of endothermic reaction (4H>0) in ethylene chloride but exothermic reaction (4H>0) carbon tetrachloride and the effect of temperature change in carbon tetrachloride was considerably affected than that of ethylence chloride.
6-Methyltetrahydrocarbazole-Chloranil 電荷移動錯物에 관한 硏究 (第一報)
文正大 釜山大學校 師範大學 1980 교사교육연구 Vol.7 No.2
Absorption band for 6-methyltetrahydrocarbazole-chloranil charge-transfer complexwas determined by means of UV spetrophotometer in three solvent systems, chloroform, ethylene chloride and dichl-oromethane and the maximum absorption bands were found 580 nm in chloroform, 576 nm in ethylene chloride, 580 nm in dichloromethane, respectively. Formation constant(K_(f)) and molar absorptivity(ε_(λ)) of the 6-methyltetrahydrocarbazole-chloranil complex have been determined by Benesi-Hildebrand method. The solvent effect of charge-transfer complex was increased in dichloromethanewhich the basidity was larger than that of chloroform, and the effect of temperature change in chloroformwas almost not affected, but that of dichloromethane was considerably affected.
文正大,田美愛,秋泰郁 부산대학교 사범대학 과학교육연구소 1990 科學敎育硏究報 Vol.17 No.-
The contents of the eight texts of science Ⅱ(chemistry) are well organized for the comparehension of basic concepts, the development of inquiry ability, the promotion of scientific attitude, and the promotion of experimental and practical skill. However, a certain subject objectives of science such as the temporary development of science and effects of science an society are not sufficiently embodied. Most of texts deal with observation and measurements, conditional controls, performance of laboratory equipments, safety educations, and discussion of results from the element of basic process remarkbly in the content of experiments, but in some texts safety education are a little neglected.
2,6-디메틸나프탈렌-클로라닐의 電荷移動錯物에 관한 연구
문정대,문경근 釜山大學校 師範大學 1986 교사교육연구 Vol.12 No.-
Absorption bands for 2,6-dimethylnaphthalene-chloranil complex were determined by means of UV spectrophotometry in chloroform, methylene chloride, and ethylene chloride. The maximum absorption band was found at 543 nm in chloroform, at 533 nm in methylene chloride, and at 530 nm in ethylene chloride, respectively. Formation constant (K_(f)) and molar absorptivity(ε_(λ)) of charge-transfer complex were determined by Benesi-Hildebrand method. Formation constant (K_(f)) decreases at higher temperature and with increased solvent polarity. These observations combined with the previous results in this series indicate that the ionization potential of the donor decreases in the order, naphthalene>2-methylnaphthalene>2,3-dimethylnaphthalene>2,6-dimethylnaphthalene. The value of Kf increases in the order, naphthalene-chloranil<2-methylnaphthalene-chloranil<2,6-dimethylnaphthalene-chloranil<2,3-dimethylnaphthalene-chloranil.