| A series of novel Gemini amphiphiles were synthesized from Behera's amine, alkyl or perfluoroalkyl chains and cyanuric chloride. Behera's amine was used as the dendron unit, alkyl or perfluoroalkyl chains as hydrophobic tails or spacer groups, and triazine rings as a bridge to link hydrophobic tails, hydrophilic heads, and spacer groups. Thus, a series of Gemini amphiphiles were synthesized via transforming different terminal or spacer groups which showed good thermal stability by TG/DTA test.Besides, in order to test the influence of different terminal or spacer groups on the surface activity of target molecules, the surface tension of Gemini molecules was measured, and their critical micelles concentration(CMC), saturated adsorption capacity and occupation area of per molecule were also determined. The results showed that they all could decrease the surface tension of water and showed regular changes along with the difference of terminal and spacer groups. Moreover, their emulsion forms were explored by TEM, DLS, and AFM tests.In addition, on the basis of green chemistry, an efficient, convenient and environmentally friendly protocol for PdCl2-ligandless Suzuki reaction of aryl bromides with arylboronic acids in mild conditions was developed. |
