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Electropolymerization of Proline Supported beta Cyclodextrin inside Amino Functionalized Magnetic Mesoporous Silica Nanomaterial: One Step Preparation, Characterization and Electrochemical Application

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Date
2018
Author
Hasanzadeh, M
Hassanpour, S
Nahr, AS
Shadjou, N
Mokhtarzadeh, A
Mahboob, S
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Abstract
The use of mesoporous nanomaterials as hosts for polymers production is a field of great interest, especially in the case of conducting polymers. Free-radical polymerization inside mesoporous silica has been investigated in order to open a route to functional polymer-silica composite materials with well-defined mesoporosity. In this report, proline monomers integrated with beta cyclodextrin were electropolymerized into amino functionalized mesoporous silica. The fabrication of poly-proline-amino functionalized magnetic mesoporous silica-beta cyclodextrin nanohybridon glassy carbon electrode was performed using one step electrodeposition regime. Field emission scanning electron microscopy was confirmed produced nano-hybrid material containing poly-proline into the pores of amino functionalized mesoporous silica which leads to increase of surface coverage of poly-proline. The results indicate that Poly-proline was successfully generated inside the pores of the amino functionalized MCM-41 and that the amine group was capable of protonating the polymer, producing poly-proline, the most conductive one, without the addition of another acid source during the polymerization step. The grafted amine groups also promoted a stronger interaction between inorganic matrix and proline than the observed in nano-encapsulated poly-proline, which resulted in high conductively. Therefore, it was evaluated some electrochemical aspects of the prepared nano-hybrid using cyclic voltammetry, differential pulse voltammetry and linear sweep voltammetry. Finally, the electroactivity of poly-proline-amino functionalized magnetic mesoporous silica-beta cyclodextrin nano-hybrid modified glassy carbon electrode towards detection and determination of some physiologically-relevant electroactive small molecules, was studied. Furthermore, it is demonstrated that the nano-coatings of polymers deposited on the mesopore walls have remarkably enhanced sensitivity and selectivity, as compared to that of bulk polymer resins. We believe that, due to facile functionalization and attractive textural properties, the mesoporous polymer-silica composite materials are very useful for biomedical applications.
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http://dspace.tbzmed.ac.ir:8080/xmlui/handle/123456789/44678
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