Vesicles Formation by Zwitterionic Micelle and Poly-l-lysine: Solvation and Rotational Relaxation Study

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• 作者：Jagannath Kuchlyan ; Debasis Banik ; Arpita Roy ; Niloy Kundu ; Nilmoni Sarkar
• 刊名：Journal of Physical Chemistry B
• 出版年：2015
• 出版时间：July 2, 2015
• 年：2015
• 卷：119
• 期：26
• 页码：8285-8292
• 全文大小：356K
• ISSN：1520-5207

文摘

The stable unilamellar vesicles formation, having large potential applications in biological as well as biomedical fields, has been investigated in aqueous solution composed of a zwitterionic surfactant, N-hexadecyl-N,N-dimethylammonio-1-propanesulfonate (SB-16), and water-soluble cationic poly(amino acid), poly-l-lysine (PLL). Dynamic light scattering (DLS), transmission electron microscopy (TEM), and other optical spectroscopic techniques revealed the transformation of SB-16 micelles in aqueous solutions into stable unilamellar vesicles above a certain concentration (0.008 to 0.1% w/v) of PLL. Solvation and rotational dynamics of coumarin 480 (C-480) give the information on hydration behavior around the headgroup regions of SB-16 micelle and SB-16/PLL vesicle. It was observed that the hydration nature around the headgroup regions of SB-16/PLL vesicular system is higher than the head group regions of micellar system. Thus, PLL permits more water molecules in the headgroup regions of vesicular system.