Nanometric TiO 2 as NBBs for functional organic-inorganic hybrids with efficient interfacial charge transfer

P. Gorbovyi (1) , M. Traoré (1) , K. Chhor (1) , Luc Museur (2) , A. Kuznetsov (3) , B.N. Chichkov (3) , A.V. Kanaev (1)

1 LIMHP - Laboratoire d'Ingénierie des Matériaux et des Hautes Pressions
2 LPL - Laboratoire de Physique des Lasers
3 LZH - Laser Zentrum Hannover e.V.

The purpose of this work is to establish a fabrication method for new electronic materials: organic-inorganic p-MAPTMS / titanium-oxo-alkoxy hybrids. The size-selected 5.2-nm TiO 2 nanoparticles (Nano Building Blocks-NBB) are generated in a sol-gel reactor with turbulent fluids micromixing. The surface exchange between propoxy and MAPTMS groups under vacuum pumping results in a stable nanoparticulate precursor available for 2-photon laser polymerisation. The hybrids demonstrate quantum yield of photoinduced charges separation 6 % and can steadily trap photoinduced electrons at number density of 6% Ti atoms. The materials are suitable for 3D-microstructuring.

Domaines: Optique [physics.optics]

P. Gorbovyi, M. Traoré, K. Chhor, Luc Museur, A. Kuznetsov, et al.. Nanometric TiO 2 as NBBs for functional organic-inorganic hybrids with efficient interfacial charge transfer. Chemical Engineering Transactions, 2011, ⟨10.3303/CET1124033⟩. ⟨hal-01247291⟩