2012-咪唑双子表面活性剂.pdf

Colloids and Surfaces A: Physicochem. Eng. Aspects 414 (2012) 33–40

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Colloids and Surfaces A: Physicochemical and
Engineering Aspects

jo urnal homepage: ate/colsurfa

paction to multi-molecular DNA condensation induced by cationic

imidazolium gemini surfactants
a,b a,∗ a b,∗∗ b

Ting Zhou , Guiying Xu , Mingqi Ao , Yanlian Yang , Chen Wang
a

Key Laboratory of Colloid and Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, PR China
b

National Center for Nanoscience and Technology, Beijing 100190, PR China

h i g h l i g h t s g r a p h i c a l a b s t r a c t


An evolution from paction

to multi-molecular DNA condensa-

tion induced by [Cn-im]Br2 is

identified and its mechanism is dis-
cussed.


[Cn-im]Br2 as novel imidazolium

gemini surfactants can interact with

DNA via electrostatic, hydrophobic

and ␲–␲ interaction.


The stronger interaction between

DNA and [Cn-im]Br2 with longer

tails demonstrates the important

contribution of the hydrophobic
interaction.

a r t i c l e i n f o a b s t r a c t


Article history: paction and condensation of DNA induced by cationic imidazolium gemini surfactants ([Cn-4-

Received 5 May 2012

Cnim]Br2, n = 10, 12, 14) at different charge ratios ha