http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
Quinoline誘導體들의 置換基效果에 關한 吸收分光學的 硏究
具原會,朴鍾會 충남대학교 자연과학연구소 1977 學術硏究誌 Vol.4 No.2
In the present work, the ultra-violet absorption spectra of quinoline and its 17 derivatives with various substituents have been studied and discussions are made in terms of inductive and mesomeric effects derived from the first and second order perturbstion theory upon the wavelenth shift and intensty change of the ^(1)L_(k) and ^(1)L_(a) type bands. In order to calculate the respective wavelength shifts of absorption peaks of ^(1)L_(k)bands of the quinoline derivatives which are caused by the substituent effects, modified and extended method of Longuet-Higgins has been used. The calculated results show good agreement with the experimental data. In the case of the quinoline derivatives which have monosubstituent at 2, 3, 4. 5, 6, 7 and S positions respectively, the a-and β-naphthylmethyl anion models have been proposed for the irterpretation band shifts. It has been found that the above mentioned models are quite suitable proposal. In the explanation of the changes in absorption, intensities due to the substruent effects in some monosubstituent quinolines. an attempt has been made to use the idea of spectrpscopic moment put forward by Platt and Petruska. Qualitative agreement between the above mentioned treatments and the experimental results has been obtained. For the purpose of investigating the relationship between the substituent effects on the spectra and basicity of the quinoline derivatives, basicity of quinoline and its 17 detatives are measured in 46 per cent ethanol aqueous solution by the usual spectrophotometric methods. Basicities of quinoline derivatives are discussed in terms of inductive effect of substituents and, in addition, the applicability of the Hammett equation has been tested.
Spectral Studies upon Association of Some Oxadiazole and Isoxazole Derivatives at High Dilution
Park, Chong Hoe,Lee, Hong,Koo, Won Hoe 충남대학교 자연과학연구소 1977 學術硏究誌 Vol.4 No.2
이 論文은 吸收 및 發散分光學的 方法을 利用하여 몇가지 oxadiazole 및 isoxazole 誘導體들의 10^(-7)M 程度까지의 高稀釋溶液에서 分子會合現象을 硏究檢討한 것이다. 그 結果 dipole moment가 크고 同一平面性을 가지는 化合物들만이 高稀釋狀態에서 會合現象을 나타내는 것이 發見되었으며 따라서 分子會台의 主要한 要因은 雙極子 사이의 相互作用이며 會合體의 構造는 雙極子가 서로 反對로 配向된 sandwich型이라고 結論된다. 螢光發散 spectra의 濃度에 따르는 强度變化를 觀測함으로써 Beer法則의 檢討를 目的으로 하는 吸收分光法보다 더 높은 稀釋度에서의 會合現象의 硏究가 可能하였으며 이 方法은 螢光强度가 强한 化合物의 硏究에는 매우 有用한 것임을 立證할 수 있었다.