- 作者: 詹益松 ; 施正雄
- 作者服務機構: 台灣師範大學化學系
- 中文摘要: Both C/sub 10/H/sub 21/-18-crown-5 and C/sub 10/ H/sub 21/-15-crown-5 were successfully synthesized and exhibited the distinctive characteristics of surfactants. Fluorescence of pyrene was used as a sensitive probe to study the micelle formation of the crown ether surfactant. The variation of the intensity ratio (I/sub 1//I/sub 3/) of the first and third vibrational fluorescence bands of pyrene was employed to determine the critical micellar concentration (CMC). Both CMC and cloud points were found to depend on the kinds of cations and the ionic strength in solution. The quenching of pyrene fluorescence is also investigated for some cations under micelle and non-micelle circumstances.
- 英文摘要: --
- 中文關鍵字: Crown Ether; Surfactant; Pyrene Micelle; Fluorescence
- 英文關鍵字: 冠醚;界面活性劑;微胞;螢光