| AVS 57th International Symposium & Exhibition | |
| Surface Science | Friday Sessions |
| Session SS-FrM |
| Session: | Reactivity of Oxides, Mainly TiO2 |
| Presenter: | R.A. Franking, University of Wisconsin-Madison |
| Authors: | R.A. Franking, University of Wisconsin-Madison S.A. Chambers, Pacific Northwest National Laboratory R.J. Hamers, University of Wisconsin-Madison |
| Correspondent: | Click to Email |
The integration of molecular systems with TiO2 is of interest in a wide range of emerging applications. Previously we developed a photochemical reaction which highly stably and covalently binds terminal alkenes to nanocrystalline and single crystal TiO2. Here we further develop the reaction to allow the controlled binding of short chain molecules with highly flexible, modular functionalities. Using XPS, FTIR and AFM, we demonstrate that by adding methyl substitutions around the alkene double bond, uniform grafting of the molecules can be controlled from the monolayer to the multilayer regime. Through secondary reactions, click chemistries can be used to attach photo sensitizers and biologically active molecules with the stable linker to the surface. These highly functional molecules grafted to TiO2 facilitate the study of charge transfer and photo catalysis for wide range of applications involving organic semiconductor oxide interfaces.