Reactive and Organosoluble SnO2 Nanoparticles by a Surfactant-Free Non-Hydrolytic Sol-Gel Route

Abdelhay Aboulaich (1) , Bruno Boury (1, 2) , P. Hubert Mutin (1)

1 ICGM ICMMM - Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier
2 CMOS - Chimie moléculaire et organisation du solide

Reactive SnO2 nanoparticles have been successfully prepd. by a simple non-hydrolytic sol-gel synthesis in CH2Cl2 at 110 °C by using SnCl4 as a precursor and diisopropyl ether (iPr2O) as an oxygen donor. The SnO2 nanocrystals, with a diam. of about 4 nm, formed stable sols in org. aprotic solvents in the absence of any surfactant or coordinating agent. The lack of aggregation has been attributed to the presence of Cl and OiPr surface groups instead of OH groups. These surface groups render the nanoparticles reactive towards hydroxylated surfaces, as shown by their reaction with an oxidized silicon wafer; the nanoparticles bind uniformly across the wafer to form a monolayer.

Domaines: Matériaux

Abdelhay Aboulaich, Bruno Boury, P. Hubert Mutin. Reactive and Organosoluble SnO2 Nanoparticles by a Surfactant-Free Non-Hydrolytic Sol-Gel Route. European Journal of Inorganic Chemistry, 2011, pp.1434-1948. ⟨10.1002/ejic.201100391⟩. ⟨hal-00626976⟩