Colloidal stability and photophysical characteristics of luminesent silica nanoparticles modified with various nitrogen/oxygen-containing trialkoxysilanes
- Authors: Burilov V.A.1, Latypova A.T.1, Safiullin R.A.2, Antipin I.S.1,3
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Affiliations:
- Kazan (Volga Region) Federal University
- Kazan National Research Technological University
- Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center
- Issue: Vol 86, No 3 (2016)
- Pages: 661-667
- Section: Article
- URL: https://journals.rcsi.science/1070-3632/article/view/214323
- DOI: https://doi.org/10.1134/S1070363216030245
- ID: 214323
Cite item
Abstract
Surface modification of the luminescent silica nanoparticles doped with Tb(III)–p-sulfonatothiacalix[ 4]arene complex was carried out using a series of nitrogen/oxygen-containing trialkoxysilanes. It was found that groups capable of nonspecific interactions on the surface of the nanoparticles cause a significant decrease in their colloidal stability. The chromophore moieties in the modifiers were found to quench the luminescence of the nanoparticles. The surface modification of the nanoparticles is responsible for the change in the mechanism of luminescence quenching in the presence of copper(II) ions due to decreased accessibility of luminophores to the quencher.
About the authors
V. A. Burilov
Kazan (Volga Region) Federal University
Author for correspondence.
Email: ultrav@bk.ru
Russian Federation, ul. Kremlevskaya 18, Kazan, Tatarstan, 420008
A. T. Latypova
Kazan (Volga Region) Federal University
Email: ultrav@bk.ru
Russian Federation, ul. Kremlevskaya 18, Kazan, Tatarstan, 420008
R. A. Safiullin
Kazan National Research Technological University
Email: ultrav@bk.ru
Russian Federation, Kazan, Tatarstan, 420015
I. S. Antipin
Kazan (Volga Region) Federal University; Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center
Email: ultrav@bk.ru
Russian Federation, ul. Kremlevskaya 18, Kazan, Tatarstan, 420008; Kazan, Tatarstan