2-唑類屬藍色系螢光化合物，可因分子
結構苯環上取代基不同，螢光性質亦隨之改變 ，本實驗探討胺基、甲氧
基、甲基等推電子基或硝基、磺酸基等拉電子基，對2-唑類化合 物
螢光波長偏移的影響。
在2-唑類化合物製備方面，採取苯亞甲基酮類與苯類於乙醇酸性溶
劑中加熱脫水縮 合而得，依實驗結果比較，溶劑改為乙醇的收率皆高於
文獻收率質。 實驗共合成32種不同取代基
與取代位置改變的2-唑類化合物。探討溶於氯仿之UV最 大吸收波長
與M. Pestemer原理之螢光波長值變化，其中有胺基之2-唑類化合物
，係數 n 值則修改為2.9，才能使M. Pestemer原理計算之波長符合螢光
波長實測值。
2-Pyrazoline compounds belong to blue fluorescence
series. The difference of fluorescent properties of 2
- pyrazoline compounds were effect of the substitutents
upon the phenyl group. This study will compare the effect
of the electron - donating substitutents ( amino-, methoxy,
methyl ) and the electron - withdrawing substitutents (
nitro, sulfo ) upon the shift of fluorescence wavelength.
These 2-pyrazolines have been synthesized by reaction
between the appropriate α,β- unsaturated ketone and
aryl-hydrazine in alcoholic hydrochloric acid. The mixture
was boiled under reflux for 2 ~ 3 hr. The compounds were
formed in good yield by used alcohol as solvent.
Used the method, thirty two derivatives of 2-
pyrazolines have been synthesized. An attempt was made
to discuess the U.V. absorption in chloroform and
fluorescence wavelength of these compounds. The
fluorescent spectrum of amino- substitutent 2-pyrazolines
show that the coefficient n of M. Pestemer rule was
corrected as 2.9 .