期刊
JOURNAL OF NON-CRYSTALLINE SOLIDS
卷 450, 期 -, 页码 32-37出版社
ELSEVIER
DOI: 10.1016/j.jnoncrysol.2016.07.037
关键词
MCM-41; Phenyl-functionalized MCM-41; Rhodamine B; Fluorescence emission
资金
- Natural Science Foundation of China [21265009, 21265018]
- Research Fund for the Doctoral Program of Higher Education of China [20126203120003]
- Gansu Province Higher Fundamental Research Project
Mesoporous silica material can be viewed as an ideal solid host for constructing desirable dye laser with tunable wavelength range. In this investigation, Rhodamine B molecules were successfully encapsulated into the pore of highly ordered MCM-41 and Phenyl-functionalized MCM-41 mesoporous silica by using a simple and facile postgrafting method. The as-gained Rhodamine B encapsulated mesoporous silica materials were successfully characterized by Fourier transform infrared spectroscopy, nitrogen adsorption-desorption and small angle Xray diffraction. Particularly, the optical absorption and electrochemical behaviors investigated by UV-vis absorption spectra and electrochemical cyclic voltammogram indicate that the difference on the hydrophillic nature of different mesoporous silica hosts has great influence on the existence state of Rh B molecules, resulting lead to strong fluorescence and obvious blue-shift of the encapsulated Rhodamine B molecules in the proposed organic-inorganic hybrid mesoporous. Furthermore, it was pointed out that the significant host-guest interactions of mesoporous silica and Rhodamine B are related not only to the structure, but also to the environmental and surrounding polarity of the materials. (C) 2016 Elsevier B.V. All rights reserved.
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