Entrap and release of Phe–Phe nanotubes in sol–gel derived silicate matrix: study through nanosilver interaction

After the discovery of the ability of dipeptide self-assembly, numerous research activities have been reported on Phe–Phe dipeptide based nano-materials. However, entrapping peptide nanotubes in a silicate matrix has not been carefully studied. This paper reports on self-assembled Phe–Phe nanotubes...

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Bibliographic Details
Published in:Journal of sol-gel science and technology 2014-12, Vol.72 (3), p.534-542
Main Authors: Karthikeyan, Balakrishnan, Giri, Aswini Kumar, Hruby, Victor J.
Format: Article
Language:English
Subjects:
Ceramics
Chemistry
Chemistry and Materials Science
Colloidal gels. Colloidal sols
Colloidal state and disperse state
Composites
Exact sciences and technology
General and physical chemistry
Glass
Inorganic Chemistry
Mass spectrometry
Materials Science
Microscopy
Nanoparticles
Nanostructure
Nanotechnology
Nanotubes
Natural Materials
Optical and Electronic Materials
Original Paper
Peptides
Physical and chemical studies. Granulometry. Electrokinetic phenomena
Scanning electron microscopy
Self assembly
Silicates
Silver
Sol gel process
Sol-gel processes
Transmission electron microscopy
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Summary:After the discovery of the ability of dipeptide self-assembly, numerous research activities have been reported on Phe–Phe dipeptide based nano-materials. However, entrapping peptide nanotubes in a silicate matrix has not been carefully studied. This paper reports on self-assembled Phe–Phe nanotubes entrapped in a silicate matrix derived by a simple, and modified acid mediated sol–gel approach. Here, interaction of silver nanoparticles with regained nanotubes from the silicate matrix is reported. Mass spectrometry data showed the self-assembly of peptide monomers. Scanning electron microscopy and transmission electron microscopy studies have been used to examine the shapes and sizes of the nano-structures, and the results provide a promising method for trapping peptide based nanotubes. UV–Visible spectra suggest that there are some effects of silicate environment around Phe–Phe NTs on its absorbance. Density functional calculations showed the probable type of interaction between peptide and Ag atoms. This study can be useful for future applications, which are based on immobilization strategy for drug carrying and sensing.
ISSN:0928-0707
1573-4846
DOI:10.1007/s10971-014-3470-x