Optical and Photochemical Properties of Sodium Dodecylbenzenesulfonate (DBS)-Capped TiO2 Nanoparticles Dispersed in Nonaqueous Solvents

• DOI: 10.1021/la026252q
• Publication Date: 2003-01-28T06:21:36Z
• Authors: G. Ramakrishna; Hirendra N. Ghosh
• Keywords: Sodium dodecylbenzenesulfonate; Picosecond

TiO2 nanoparticles capped with sodium dodecylbenzenesulfonate (DBS) have been synthesized so that they can be dispersed in many organic and nonaqueous solvents. It has found DBS-capped a significant red shift of the optical absorption band edge clear photoluminescence at room temperature contrast to bare nanoparticles. The results obtained indicate surface structure, is, capping group defect states, plays an important role electronic states recombination dynamics photoexcited charge carriers (electron hole pairs) as studied by picosecond transient spectroscopy is much slower compared reported earlier.