Surface-bound polymerization of THA to PTHA on surface of a TiO2 nanocrystallite. The monomer THA was strong bonded to TiO2 surface via -COOH. FeCl3 was used as an oxidizing agent to polymerize the surface-bound THA to its corresponding polymer PTHA.
Saji et al. Nanoscale Research Letters 2011 6:521 doi:10.1186/1556-276X-6-521