Dr. Wang, Xin
Institution
Biochemical Engineering, Graduate School of Science & Engineering, Yamagata
University, Yonezawa City, Yamagara Prefecture, Japan.
Presentation day
poster
TITLE
Redox-responsive vesicles prepared from double armed alkyl ferrocene with aza-18-crown-6 ether molecules
Abstract
Ferrocenyl surfactants have attracted attention because their formation of aggregates
such as micelles, vesicles and interfacial properties can be controlled by their redox reactions. These
surfactants allow facile manipulation of the charge of the surface properties. In this studies, novel redoxswitched
amphiphilic ferrocene-modified surfactants, containing crown ether as a host compounds N-(7-
ferrocenylheptyl)-aza-18-crown-6-ether 1, N-(12-ferrocenyldodecyl)-aza-18-crown-6-ether 2, and 1,1’-
ferrocene-bis(undecyl-aza-18-crown-6-ether) 3 had been first synthesized in good yields. The selfassembly
behaviors, morphologies features of these amphiphilic surfactants 1, 2 and 3 in aqueous solution
were observed by scanning electron microscope (SEM), dynamic light scattering (DLS), and were
confirmed by atomic force microscopy (AFM) measurements. The micelle formation was observed in the
Li2SO4 aqueous solution of the reduced 1, 2 and 3 above the critical micelle concentration. Moreover, the
spontaneous vesicle formation was observed in the aqueous solution of the reduced 3 (Figure 1) above the
critical micelle concentration. Redox-responsive of self-assembled monolayers micells or bilayers vesicles
of ferrocene-modified surfactants in aqueous solutions of Li2SO4 were investigated by cyclic voltammetry
(CV), potentio statically and UV-vis measurements. This resulting inclusion these aggregation states of
micells or vesicles changed drastically by the oxidation of ferrocenyl groups that displayed an
electrochemical of redox-responsive behavior in aqueous solution. For the concentrations of compounds
above the critical micelle concentration, CV shows a significant increase peak current on the cathodic side,
that was the characteristics of ferrocene-modified aggregations formation. Moreover, following re-reduction
of the oxidized micelles and vesicles solution resulted in the re-constitution of smaller micelles.
CV
2014-Present : Ph. D (Biochemical Engineering) Yamagata University kijima Lab
2012-2014 : Mater of Engineering (Biochemical Engineering)Yamagata University kijima Lab
2010- 2011 : Research Assistant in Employer of Asymchem Laboratories)
2006- 2010 : Bachelor of Engineering (Applied chemistry)Jilin institute of chemical technology
Literatures
-
Xin Wang, Miho Kusakari, Bunpei Hatano, Satoshi Murakami, Tatsuro Kijima, 3P079 Synthesis
and properties of the alkyl ferrocenes with cation binding ability, International Symposium of the
Tohoku Branch of the Chemical Society of Japan, Sendai, Sep. 28-30, 2013. (English, Poster) -
Xin Wang, Miho Kusakari, Bunpei Hatano, Satoshi Murakami, Tatsuro Kijima,P-24, Synthesis
and self-assembly of the long chain alkyl ferrocene with crown ether, Material technology of
Japan Research institute, Tokyo, Dec.6-7,2013. (Japanese, Poster) -
Xin Wang, Satio Natsuki, Bunpei Hatano, Satoshi Murakami, Tatsuro Kijima, Synthesis and selfassembly
of the long chain alkyl ferrocene with crown ether, The Symposium of Tohoku Branch
of the Chemical Society of Japan, Yamagata, Sep. 20-21, 2014.(Japanese, Poster) -
Satio Natsuki , Xin Wang, Bunpei Hatano, Satoshi Murakami, Tatsuro Kijima, Synthesis of
functional long chain alkyl ferrocene forming redox-responsive vesicle, The Symposium of
Tohoku Branch of the Chemical Society of Japan, Yamagata, Sep. 20-21, 2014. (Japanese, Poster)