The Experts below are selected from a list of 234 Experts worldwide ranked by ideXlab platform

Dolores M Marcos - One of the best experts on this subject based on the ideXlab platform.

Yolanda Salinas - One of the best experts on this subject based on the ideXlab platform.

  • Chromo-fluorogenic detection of nitroaromatic explosives by using silica mesoporous supports gated with tetrathiafulvalene derivatives.
    Chemistry: A European Journal, 2013
    Co-Authors: Yolanda Salinas, Felix Sancenon, Marta Vico Solano, Rebecca E. Sørensen, Karina R. Larsen, Jess Lycoops, Jan O. Jeppesen, Ramón Martínez-máñez, M. Dolores Marcos, Pedro Amorós
    Abstract:

    Three new hybrid gated mesoporous materials (SN3-1, SNH2-2, and SN3-3) loaded with the dye [Ru(bipy)3]2+ (bipy=bipyridine) and capped with different tetrathiafulvalene (TTF) derivatives (having different sizes and shapes and incorporating different numbers of sulfur atoms) have been prepared. The materials SN3-1 and SN3-3 are functionalized on their external surfaces with the TTF derivatives 1 and 3, respectively, which were attached by employing the “click” chemistry reaction, whereas SNH2-2 incorporates the TTF derivative 2, which was anchored to the solid through an amidation reaction. The final gated materials have been characterized by standard techniques. Suspensions of these solids in acetonitrile showed “zero release”, most likely because of the formation of dense TTF networks around the pore outlets. The release of the entrapped [Ru(bipy)3]2+ dye from SN3-1, SNH2-2, and SN3-3 was studied in the presence of selected explosives (Tetryl, TNT, TNB, DNT, RDX, PETN, PA, and TATP). SNH2-2 showed a fairly selective response to Tetryl, whereas for SN3-1 and SN3-3 dye release was found to occur with Tetryl, TNT, and TNB. The uncapping process in the three materials can be ascribed to the formation of charge-transfer complexes between the electron-donating TTF units and the electron-accepting nitroaromatic explosives. Finally, solids SNH2-2 and SN3-1 have been tested for Tetryl detection in soil with good results, pointing toward a possible use of these or similar hybrid capped materials as probes for the selective chromo-fluorogenic detection of nitroaromatic explosives.

  • fluorogenic detection of Tetryl and tnt explosives using nanoscopic capped mesoporous hybrid materials
    Journal of Materials Chemistry, 2013
    Co-Authors: Yolanda Salinas, Ramon Martinezmanez, Felix Sancenon, Alessandro Agostini, Edgar Perezesteve, Dolores M Marcos
    Abstract:

    A hybrid capped mesoporous material, which was selectively opened in the presence of Tetryl and TNT, has been synthesised and used for the fluorogenic recognition of these nitroaromatic explosives.

  • highly selective and sensitive chromo fluorogenic detection of the Tetryl explosive using functional silica nanoparticles
    Chemical Communications, 2011
    Co-Authors: Yolanda Salinas, Estela Climent, Ramon Martinezmanez, Felix Sancenon, Dolores M Marcos
    Abstract:

    Silica nanoparticles containing polyamines and thiol groups have been used as probes for the selective detection of Tetryl.

Ramon Martinezmanez - One of the best experts on this subject based on the ideXlab platform.

Ramaraj Boopathy - One of the best experts on this subject based on the ideXlab platform.

  • bioremediation of Tetryl contaminated soil using sequencing batch soil slurry reactor
    International Biodeterioration & Biodegradation, 2005
    Co-Authors: Ramaraj Boopathy
    Abstract:

    Abstract A laboratory study was conducted to determine whether Tetryl (2,4,6-trinitrophenlymethylnitramine) contaminated soil could be bioremediated using a sequencing batch soil slurry reactor (SBR) operated under anoxic–aerobic sequence. The results indicated that Tetryl was co-metabolically converted to aniline under anoxic conditions with molasses as the growth substrate. The gas chromatographic/mass spectrometric analysis of the soil slurry showed various metabolites, identified as trinitrobenzeneamine, dintrobenzenediamine, nitroaniline and aniline. Aniline was not metabolized further under anoxic conditions. When the soil slurry reactor was operated under aerobic conditions, the aniline concentration was reduced to below the detection limit (0.05 ppm). This metabolic conversion of Tetryl is probably of value in the treatment of Tetryl-contaminated soil and ground water, such as those found at the Joliet army ammunition plant site in Illinois and the Iowa army ammunition plant site in Burlington, Iowa.

  • formation of aniline as a transient metabolite during the metabolism of Tetryl by a sulfate reducing bacterial consortium
    Current Microbiology, 2000
    Co-Authors: Ramaraj Boopathy
    Abstract:

    A laboratory study was conducted to determine whether Tetryl (2,4,6-trinitrophenylmethylnitramine) can be degraded by an anaerobic process. The results indicated that the metabolic conversion of Tetryl to aniline is possible by a sulfate-reducing bacterial (SRB) consortium. This SRB consortium metabolized Tetryl by co-metabolism with pyruvate as a growth substrate. For every mole of Tetryl metabolized, 1 mole of aniline was produced, and the aniline was further metabolized. This metabolic conversion of Tetryl is likely to be of value in the anaerobic treatment of Tetryl-contaminated soil and ground water, such as found at many military ammunition sites.

  • biodegradation of Tetryl 2 4 6 trinitrophenylmethylnitramine in a soil slurry reactor
    Water Environment Research, 1998
    Co-Authors: Ramaraj Boopathy, John F Manning
    Abstract:

    A laboratory study was conducted to determine whether Tetryl can be biodegraded by native soil bacteria under soil-slurry conditions with molasses as cosubstrate. A 2-L laboratory reactor was set up with a 15% (weight/volume) slurry of contaminated soil in deionized water. The soil slurry was mixed continuously at 80 r/min. Molasses at 0.3% (volume/volume) was added weekly as a cosubstrate. A no-carbon control reactor was also set up without molasses addition. The concentration of Tetryl in the soil was monitored periodically. The results showed 100% removal of Tetryl from the soil within 3 months of operation. In the no-carbon control, no significant degradation of Tetryl was observed. The gas chromatographic/mass spectrometric analysis of the aqueous phase of the soil slurry showed metabolites identified as trinitro-n-methylaniline, trinitrobenzeneamine, dinitrobenzenediamine, nitroaniline, and aniline. None of these metabolites persisted more than a week after they appeared in the reactor system. The parameters relevant to biodegradation and process control, such as pH, dissolved oxygen, bacterial counts, and metabolites produced in the reactor, are discussed.

Felix Sancenon - One of the best experts on this subject based on the ideXlab platform.

  • Chromo-fluorogenic detection of nitroaromatic explosives by using silica mesoporous supports gated with tetrathiafulvalene derivatives.
    Chemistry: A European Journal, 2013
    Co-Authors: Yolanda Salinas, Felix Sancenon, Marta Vico Solano, Rebecca E. Sørensen, Karina R. Larsen, Jess Lycoops, Jan O. Jeppesen, Ramón Martínez-máñez, M. Dolores Marcos, Pedro Amorós
    Abstract:

    Three new hybrid gated mesoporous materials (SN3-1, SNH2-2, and SN3-3) loaded with the dye [Ru(bipy)3]2+ (bipy=bipyridine) and capped with different tetrathiafulvalene (TTF) derivatives (having different sizes and shapes and incorporating different numbers of sulfur atoms) have been prepared. The materials SN3-1 and SN3-3 are functionalized on their external surfaces with the TTF derivatives 1 and 3, respectively, which were attached by employing the “click” chemistry reaction, whereas SNH2-2 incorporates the TTF derivative 2, which was anchored to the solid through an amidation reaction. The final gated materials have been characterized by standard techniques. Suspensions of these solids in acetonitrile showed “zero release”, most likely because of the formation of dense TTF networks around the pore outlets. The release of the entrapped [Ru(bipy)3]2+ dye from SN3-1, SNH2-2, and SN3-3 was studied in the presence of selected explosives (Tetryl, TNT, TNB, DNT, RDX, PETN, PA, and TATP). SNH2-2 showed a fairly selective response to Tetryl, whereas for SN3-1 and SN3-3 dye release was found to occur with Tetryl, TNT, and TNB. The uncapping process in the three materials can be ascribed to the formation of charge-transfer complexes between the electron-donating TTF units and the electron-accepting nitroaromatic explosives. Finally, solids SNH2-2 and SN3-1 have been tested for Tetryl detection in soil with good results, pointing toward a possible use of these or similar hybrid capped materials as probes for the selective chromo-fluorogenic detection of nitroaromatic explosives.

  • fluorogenic detection of Tetryl and tnt explosives using nanoscopic capped mesoporous hybrid materials
    Journal of Materials Chemistry, 2013
    Co-Authors: Yolanda Salinas, Ramon Martinezmanez, Felix Sancenon, Alessandro Agostini, Edgar Perezesteve, Dolores M Marcos
    Abstract:

    A hybrid capped mesoporous material, which was selectively opened in the presence of Tetryl and TNT, has been synthesised and used for the fluorogenic recognition of these nitroaromatic explosives.

  • highly selective and sensitive chromo fluorogenic detection of the Tetryl explosive using functional silica nanoparticles
    Chemical Communications, 2011
    Co-Authors: Yolanda Salinas, Estela Climent, Ramon Martinezmanez, Felix Sancenon, Dolores M Marcos
    Abstract:

    Silica nanoparticles containing polyamines and thiol groups have been used as probes for the selective detection of Tetryl.