Controllable Self‐Assembly of Organic–Inorganic Amphiphiles Containing Dawson Polyoxometalate Clusters |
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| Authors: | Panchao Yin Dr Chullikkattil P Pradeep Baofang Zhang Dr Feng‐Yan Li Claire Lydon Dr Mali H Rosnes Dong Li Emily Bitterlich Prof Dr Lin Xu Prof Dr Leroy Cronin Prof Dr Tianbo Liu |
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| Institution: | 1. Department of Chemistry, Lehigh University, Bethlehem, PA 18015 (USA), Fax: (+1)?6107586536;2. WestCHEM, School of Chemistry, University of Glasgow, University Avenue, Glasgow, G12 8QQ (UK), Fax: (+44)?1413304888;3. Key Laboratory of Polyoxometalate Science of the Ministry of Education, Department of Chemistry, Northeast Normal University, Changchun, Jilin (P.R. China) |
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| Abstract: | An organic–inorganic molecular hybrid containing the Dawson polyoxometalate, ((C4H9)4N)5H‐ P2V3W15O59(OCH2)3CNHCOC15H31], was synthesized and its surfactant‐like amphiphilic properties, represented by the formation of bilayer vesicles, were studied in polar solvents. The vesicle size decreases with both decreasing hybrid concentration and with increasing polarity of the solvent, independently. The self‐assembly behavior of this hybrid can be controlled by introducing different counterions into the acetonitrile solutions. The addition of ZnCl2 and NaI can cause a gradual decrease and increase of vesicular sizes, respectively. Tetraalkylammonium bromide is found to disassemble the vesicle assemblies. Moreover, the original counterions of the hybrid can be replaced with protons, resulting in pH‐dependent formation of vesicles in aqueous solutions. The hybrid surfactant can further form micro‐needle structures in aqueous solutions upon addition of Ca2+ ions. |
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| Keywords: | organic– inorganic hybrid composites polyoxometalates self‐assembly surfactants vesicles |
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