Premium
Controllable Self‐Assembly of Organic–Inorganic Amphiphiles Containing Dawson Polyoxometalate Clusters
Author(s) -
Yin Panchao,
Pradeep Chullikkattil P.,
Zhang Baofang,
Li FengYan,
Lydon Claire,
Rosnes Mali H.,
Li Dong,
Bitterlich Emily,
Xu Lin,
Cronin Leroy,
Liu Tianbo
Publication year - 2012
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201200362
Subject(s) - polyoxometalate , vesicle , counterion , aqueous solution , amphiphile , pulmonary surfactant , acetonitrile , bromide , chemistry , bilayer , solvent , self assembly , inorganic chemistry , polymer chemistry , ion , chemical engineering , membrane , organic chemistry , copolymer , biochemistry , polymer , engineering , catalysis
An organic–inorganic molecular hybrid containing the Dawson polyoxometalate, ((C 4 H 9 ) 4 N) 5 H‐ [P 2 V 3 W 15 O 59 (OCH 2 ) 3 CNHCOC 15 H 31 ], 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 ZnCl 2 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 Ca 2+ ions.