Preparation of TiO2 hollow-fibers using supramolecular assemblies

trans-(1R,2R)-1,2-Cyclohexanedi(11-aminocarbonylundecylpyridinium) hexafluorophosphate (1) was synthesized. The sol-gel polymerization of Ti[OCH(CH3)(2)](4) using compound 1 as a self-assembled template afforded fibrous TiO2 materials with a macaroni-like structure. The unique structure of TiO2 could be created by the formation of a fibrous self-assembled aggregate and electrostatic interaction between anionic titania species and cationic 1 under basic conditions.