The Dimensional Effect in Trimethylsilylated Silica Nanoparticles
| Authors | I.F. Myronyuk1 , Y.P. Voronin2, V.І. Mandzyuk1, , N.A. Bezruka3 , T.V. Dmytrotsa3 |
| Affiliations | 1 SHEE “Vasyl Stefanyk Precarpathian National University”, 57, Shevchenko Str., 76018 Ivano-Frankivsk, Ukraine 2 Chuiko Institute of Surface Chemistry of NAS of Ukraine, 17, General Naumov Str., 03164 Kyiv, Ukraine 3 Ivano-Frankivsk National Medical University, 2, Halytska Str., 76018 Ivano-Frankivsk, Ukraine |
| Е-mail | mandzyuk_vova@ukr.net |
| Issue | Volume 9, Year 2017, Number 5 |
| Dates | Received 14 August 2017; published online 16 October 2017 |
| Citation | I.F. Myronyuk, Y.P. Voronin, V.І. Mandzyuk, et al., J. Nano- Electron. Phys. 9 No 5, 05030 (2017) |
| DOI | 10.21272/jnep.9(5).05030 |
| PACS Number(s) | 78.30. – j, 78.66.Bf, 81.07.Wx |
| Keywords | Silica (5) , Siloxane bond, Silanols, Trimethylsilyl groups, Trimethyloxysilane. |
| Annotation | The synthesis of organosilicas with a predetermined ratio of trimethylsilyl groups and silanols using trimethyloxysilane and acetic acid as a modifier and catalyst respectively was carried out in this work. It has been established that grafted trimethylsilyl groups influence the structural state of silica. The reducing of the surface tension and, consequently, the Laplace pressure in the SiO2 globules leads to an increase in the valence angle in the siloxane bridges and the length of Si – O-bond. This dimensional effect in the IR-spectra of modified silica is displayed by displacement of absorption bands in the short-wave region associated with asymmetric (a) and asymmetric-deformation (а + O Si O) vibrations of siloxane bridges. |
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