Synthesis and characterization of halochromic hybrid sol-gel for the development of a pH sensor fabric

A halochromic hybrid textile for pH-sensing applications was designed by employing a non-toxic dyestuff, 7-Hydroxy-3H-phenoxazin-3-one (Resorufin), and an epoxy silane precursor, 3-glycidoxypropyltrimethoxysilane (GPTMS) through sol-gel method. The reaction mechanism and the formation of a polyethyl...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2017-10, Vol.254 (7), p.72027
Main Authors: Trovato, V, Rosace, G, Colleoni, C, Plutino, M R
Format: Article
Language:English
Subjects:
Halochromism
Hybrid systems
Morphology
NMR
Nuclear magnetic resonance
Polyethylene oxide
Reaction mechanisms
Sol-gel processes
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Summary:A halochromic hybrid textile for pH-sensing applications was designed by employing a non-toxic dyestuff, 7-Hydroxy-3H-phenoxazin-3-one (Resorufin), and an epoxy silane precursor, 3-glycidoxypropyltrimethoxysilane (GPTMS) through sol-gel method. The reaction mechanism and the formation of a polyethylene oxide network of GPTMS containing Resorufin were established by NMR characterization. The pH response of the hybrid halochromic system was studied by UV/Vis spectroscopy and compared with the pure Resorufin in different buffered solutions. Morphology and washing fastness of treated textile fabrics were evaluated by SEM, AFM and FT-IR analyses.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/254/7/072027