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dc.contributor.author | Sarkar, Krishanu | es_ES |
dc.contributor.author | Salinas Soler, Yolanda | es_ES |
dc.contributor.author | Campos Sánchez, Inmaculada | es_ES |
dc.contributor.author | Martínez Mañez, Ramón | es_ES |
dc.contributor.author | Marcos Martínez, María Dolores | es_ES |
dc.contributor.author | Sancenón Galarza, Félix | es_ES |
dc.contributor.author | Amoros del Toro, Pedro | es_ES |
dc.date.accessioned | 2014-06-19T11:59:50Z | |
dc.date.issued | 2013-07 | |
dc.identifier.issn | 2192-6506 | |
dc.identifier.uri | http://hdl.handle.net/10251/38240 | |
dc.description.abstract | [EN] Fluorescent organic-inorganic mesoporous hybrid materials have been prepared and characterised, and their behaviour against nitroaromatic explosives have been tested. MCM-41 silica was used as an inorganic scaffold and pyrene (P derivative containing trialkoxysilane moieties), dansyl and fluorescein (D and F derivatives also containing trialkoxysilane groups, respectively) fluorophores have been anchored on hybrid materials by a co-condensation method to obtain a homogenous distribution of dyes into the pores of the support. Six sensing materials have been prepared, of which SP, SD, SF were hydrophilic and SPh, SDh, SFh were hydrophobic. Template-free hydrophilic materials (SP, SD, SF) were obtained after repeated NH4NO3/ethanol extractions under temperature from as-synthesised (MP, MD and MF supports, respectively) solids. Hydrophobic materials (SPh, SDh, SFh) were prepared by using excess 1,1,1,3,3,3-hexamethyldisilazane with template-free hydrophilic (SP, SD and SF) materials. The six final materials displayed the typical emission bands of the grafted fluorophores. In particular, SP and SPh show the typical pyrene monomer (370-420nm) and excimer (430-600nm) emissions. SD and SDh exhibit the broad dansyl fluorescence band in the 450-600nm range, whereas solids SF and SFh present sharp fluorescein emission centred at 525nm. The fluorescent behaviour of the six final materials was tested in the presence of explosives (pentaerythritol tetranitrate (PETN), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX), nitrobenzene (NB), 1,3,5-trinitrobenzene (TNB), 2,4,6-trinitrotoluene (TNT), 2,4-dinitrotoluene (DNT), 2,4,6-trinitrophenylmethylnitramine (Tetryl) and picric acid (PA)). Only nitroaromatic compounds were able to induce emission quenching. As a general trend, the quenching degree depended on the nature of the final material. The best response was obtained with explosives PA and Tetryl, which were able to significantly quench the emission of the sensing supports. The observed quenching was ascribed to the - stacking interactions between the electron-donor fluorophores and the electron-withdrawing nitroaromatic explosives. When using SPh for Tetryl and PA, the limits of detection were 8.5 and 1.4ppm, respectively, whereas they were 14.4 and 1.2ppm for SDh. Principal component analysis algorithms were applied to the fluorescence measurements taken with the six hybrid materials and the seven explosives. The obtained score plot showed well-defined clusters for the seven explosives tested. Finally, solid SDh was applied to detect trace amounts of Tetryl in soil samples with good results. | es_ES |
dc.description.sponsorship | Financial support from the Spanish Government (Project MAT2012-38429-C04-01) and the Generalitat Valencia (Project PROMETEO/2009/016) is gratefully acknowledged. Y.S. is grateful to the Spanish Ministry of Science and Innovation for her grant. I. C is also grateful to the Universidad Politecnica de Valencia for her grant. | en_EN |
dc.format.extent | 11 | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Wiley-VCH Verlag | es_ES |
dc.relation.ispartof | ChemPlusChem | es_ES |
dc.rights | Reserva de todos los derechos | es_ES |
dc.subject | Nitroaromatic explosives | es_ES |
dc.subject | Mesoporous materials | es_ES |
dc.subject | Hybrid materials | es_ES |
dc.subject | Fluorophores | es_ES |
dc.subject | Fluorogenic recognition | es_ES |
dc.subject.classification | INGENIERIA DE LA CONSTRUCCION | es_ES |
dc.subject.classification | QUIMICA ANALITICA | es_ES |
dc.subject.classification | QUIMICA INORGANICA | es_ES |
dc.subject.classification | QUIMICA ORGANICA | es_ES |
dc.title | Organic-Inorganic Hybrid Mesoporous Materials as Regenerable Sensing Systems for the Recognition of Nitroaromatic Explosives | es_ES |
dc.type | Artículo | es_ES |
dc.embargo.lift | 10000-01-01 | |
dc.embargo.terms | forever | es_ES |
dc.identifier.doi | 10.1002/cplu.201300140 | |
dc.relation.projectID | info:eu-repo/grantAgreement/MINECO//MAT2012-38429-C04-01/ES/DESARROLLO DE MATERIALES FUNCIONALIZADOS CON PUERTAS NANOSCOPICAS PARA APLICACIONES DE LIBERACION CONTROLADA Y SENSORES PARA LA DETECCION DE NITRATO AMONICO, SULFIDRICO Y CO/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/Generalitat Valenciana//PROMETEO09%2F2009%2F016/ES/Ayuda prometeo 2009 para el grupo de diseño y desarrollo de sensores/ | es_ES |
dc.rights.accessRights | Cerrado | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Instituto de Reconocimiento Molecular y Desarrollo Tecnológico - Institut de Reconeixement Molecular i Desenvolupament Tecnològic | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Departamento de Química - Departament de Química | es_ES |
dc.description.bibliographicCitation | Sarkar, K.; Salinas Soler, Y.; Campos Sánchez, I.; Martínez Mañez, R.; Marcos Martínez, MD.; Sancenón Galarza, F.; Amoros Del Toro, P. (2013). Organic-Inorganic Hybrid Mesoporous Materials as Regenerable Sensing Systems for the Recognition of Nitroaromatic Explosives. ChemPlusChem. 78(7):684-694. https://doi.org/10.1002/cplu.201300140 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | http://dx.doi.org/10.1002/cplu.201300140 | es_ES |
dc.description.upvformatpinicio | 684 | es_ES |
dc.description.upvformatpfin | 694 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 78 | es_ES |
dc.description.issue | 7 | es_ES |
dc.relation.senia | 259733 | |
dc.contributor.funder | Generalitat Valenciana | |
dc.contributor.funder | Universitat Politècnica de València | |
dc.contributor.funder | Ministerio de Economía y Competitividad | es_ES |