2026-04-17T23:14:02Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/85442024-02-01T01:05:25Zcom_10259_4313com_10259_5086com_10259_2604col_10259_4314

Pablos, Jesús Luis Trigo López, Miriam Serna Arenas, Felipe García García, Félix Clemente García Pérez, José Miguel 2024-01-31T13:54:30Z 2024-01-31T13:54:30Z 2014 2046-2069 http://hdl.handle.net/10259/8544 10.1039/C4RA02716G 2046-2069 This work describes the design of efficient, inexpensive and easily prepared selective sensory polymers with chemically anchored amine groups as 2,4,6-trinitrotoluene (TNT)-sensing motifs as materials for the selective visual detection of TNT in aqueous media and as vapours. The materials are prepared as handleable sensory films or dense membranes from which sensory discs are cut, as well as smart fibres by coating conventional and commercial cotton fabrics. Both types of material exhibited a highly visible colour development from colourless to red upon contact with TNT both in the gas phase and in solution, and the colour change was used to build titration curves using the colour definition parameters of a digital image acquired with a smartphone, i.e., the RGB system. The materials were selective, remaining silent with other nitroaromatic compounds, such as 4-nitrotoluene and 2,4-dinitrotoluene, and the detection limit in solution was close to the micromolar range. We gratefully acknowledge the financial support provided by the Spanish Ministerio de Economía y Competitividad-Feder (MAT2011-22544) and by the Consejería de Educación-Junta de Castilla y León (BU232U13). application/pdf eng Royal Society of Chemistry RSC Advances. 2014, V. 4, n. 49, p. 25562-25568 https://doi.org/10.1039/C4RA02716G Química orgánica Chemistry, Organic Solid polymer substrates and smart fibres for the selective visual detection of TNT both in vapour and in aqueous media info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion info:eu-repo/semantics/openAccess RSC Advances 4 49 25562 25568