Citation: Qing Shan ZHANG, Hui Miao ZHANG, Bing Nan GUO. Novel Piperazine-based Gemini and Bola Surfactants[J]. Chinese Chemical Letters, ;2006, 17(5): 621-624.
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A series of piperazine-based Gemini and Bola surfactants were synthesized. Gemini 1 and 5 have well surface activities. Their critical micelle concentrations (cmc) is 6.47×10-4 mol/L and 1.17×10-3 mol/L, respectively. Bola surfactants 2 and compound 3, possessing better water solubility, have lower surface activities. Calculation, carried out by MM2 energy minimization, showed that compound with more hydrophobic chains in a spacer of limited length is difficult to be synthesized.
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Keywords:
- Gemini surfactants,
- Bola-amphiphiles,
- piperazine,
- synthesis,
- surface tension
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