期刊
NEW JOURNAL OF CHEMISTRY
卷 40, 期 8, 页码 6752-6761出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c6nj00393a
关键词
-
资金
- Natural Science Foundation of China [50572057]
A novel Off-On solid chemosensor based on ordered mesoporous organosilica material was constructed through the co-condensation of rhodamine B organosilanes (RBSi) and tetraethoxysilane (TEOS). The resulting rhodamine B-based hybrid mesoporous organosilicas (RBMSiO2) show good recognition ability for Al3+ on the basis of the Off-On mechanism modulated by the Al3+-promoted ring-opening process of the spirolactam structure in the rhodamine B diethylenetriamine (RBD). The photo-stability of RBD could be significantly improved after introducing rhodamine B diethylenetriamine into the framework of RBMSiO2. Upon addition of Al3+, fluorescence emission intensity could increase by 110-fold with the color change from colorless to rose-red, and the detection limit of this hybrid chemosensor towards Al3+ can be as low as 1.3 x 10(-7) M. Accordingly, the RBMSiO2 materials have great potential application in environmental and biological fields for the detection of Al3+.
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