Dry Sol-Gel Condensation of p-X-C6H4SiH3 (X=H, CH3, CH3O, F, Cl) to Organosilica p-X-C6H4SiO3 Using Nickelocene

Authors: Cho, Myong-Shik; Kim, Bo-Hye; Hwang, Yun-Mi; Woo, Hee-Gweon; Kim, Do-Heyoung

Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 11, November 2006 , pp. 3388-3391(4)

Publisher: American Scientific Publishers

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Abstract:

The dry sol-gel reaction at toluene in ambient air atmosphere of p-X-C6H4SiH3 (X = H, CH3, CH3O, F, Cl) to p-C6H4SiO3 in high yield, catalyzed by nickelocene, is reported. The highest yield, molecular weight, polydispersity index, and TGA residue yield were obtained for p-Cl-C6H4SiH3. Some degree of unreacted Si-H bonds still remained in the gel because of steric reason. All the insoluble gels adopt an amorphous structure with a smooth surface. A plausible mechanism for the dry sol-gel reaction was suggested.

Keywords: HYDROSILANE; PARA-SUBSTITUTED PHENYLSILANE; NICKELOCENE; COLLOID; CATALYSIS; DRY SOL-GEL; HYDROLYSIS; CONDENSATION; ORGANOSILICA

Document Type: Research article

DOI: 10.1166/jnn.2006.017

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