writer：Wenqiang Chai, Shan Wang, Hang Zhao, Guifeng Liu, Karl Fischer, Haolong Li,* Lixin Wu, Manfred Schmidt*
keywords：cationic polymers;hybrid materials;magnetic resonance imaging;polyoxometalates;self-assembly
source：期刊
specific source：Chemistry - A European Journal 2013, 19, 13317-13321.
Issue time：2013年

Spherical and stable hybrid assemblies based on a cationic polymer with spermine side chains and an anionic Gd3+-containing polyoxometalate cluster (GdW) are prepared by electrostatic interaction (see figure). The T1-weighted MRI performance of GdW is enhanced about three times in the assemblies; meanwhile, the assemblies show good biocompatibility, which enables them to be promising candidates for MRI contrast agents.

http://onlinelibrary.wiley.com/doi/10.1002/chem.201302618/abstract?deniedAccessCustomisedMessage=&userIsAuthenticated=false