Trimer hybrid materials TBA15H3[{P2V3W15O59(OCH2)3CNHCOCCH}3] and TBA15H3[{P2V3W15O59(OCH2)3CNHCOC}3] represent a novel class of hybrid materials. The stability of the hybrid molecule is  greatly enhanced by the stable covalent bonds between the POMs with the linker. The trimer hybrid materials can self-assemble in acetone/water mixed solvents with acetone content 75 ~ 95vol%. Laser light scattering was used to monitor the self-assembly process. It shows that the hybrid cluster can form vesicle-like structures in solution with size ranging from 39 nm to 70 nm. TEM results further prove the vesicular assemblies. The trimer hybrid with more polarity linker can form smaller vesicle than the trimer hybrid with less polarity under the same conditions. Although the hydrophobic interaction involves the self-assembly process, the charge-regulation blackberry mechanism plays a major role, because there are more charges on the three POMs. The current research may provide useful information about drug delivery and nano-reactors.

Unique self-assembly behaviors of the inorganic-organic polyoxometalate (POM)-based trimer hybrid materials in acetone/water solutions

244th National Meeting (2012)

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