Redox Active Mesoporous Hybrid Materials by In situ Syntheses with Urea-linked Triethoxysilylated Phenothiazines (pages 2001–2015)
Zhou Zhou, Adam W. Franz, Sarah Bay, Biprajit Sarkar, Andreas Seifert, Piaoping Yang, Alex Wagener, Stefan Ernst, Markus Pagels, Thomas J. J. Müller and Werner R. Thiel
Version of Record online: 2 AUG 2010 | DOI: 10.1002/asia.201000098
Making hybrids: Mesoporous hybrid materials containing covalently grafted phenothiazines have been synthesized by the direct condensation of TEOS and appropriate silicon derivatives. Upon oxidation with (NO)BF4 or SbCl5, stable phenothiazine radical cations are generated in the pores of the materials, which can be detected by means of UV/Vis, emission, and EPR spectroscopies. The electron transfer into and out of these materials has been investigated by cyclic voltammetry.