1,2,3-Triazines and their Benzo Derivatives

Neunhoeffer, Hans

doi:10.1016/b978-008096519-2.00040-0

Cited by 10 publications

(2 citation statements)

References 99 publications

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“…Based on the statistical climate data, the constantly high level of rainfall and humidity throughout the year in Singapore potentially played an important role in causing changes in surface chemistry, as seen in variations of the ν (C = N) stretching mode of triazine ring vibration and the ν (C-O-C) stretching modes of ether groups. These results are consistent with the fact that the triazine ring is known to be very sensitive to hydrolysis by water, and therefore more prone to degradation in high humidity environments [ 22 , 23 ].…”

Section: Resultssupporting

confidence: 89%

Synchrotron macro ATR-FTIR microspectroscopic analysis of silica nanoparticle-embedded polyester coated steel surfaces subjected to prolonged UV and humidity exposure

et al. 2017

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Surface modification of polymers and paints is a popular and effective way to enhance the properties of these materials. This can be achieved by introducing a thin coating that preserves the bulk properties of the material, while protecting it from environmental exposure. Suitable materials for such coating technologies are inorganic oxides, such as alumina, titania and silica; however, the fate of these materials during long-term environmental exposure is an open question. In this study, polymer coatings that had been enhanced with the addition of silica nanoparticles (SiO2NPs) and subsequently subjected to environmental exposure, were characterized both before and after the exposure to determine any structural changes resulting from the exposure. High-resolution synchrotron macro ATR-FTIR microspectroscopy and surface topographic techniques, including optical profilometry and atomic force microscopy (AFM), were used to determine the long-term effect of the environment on these dual protection layers after 3 years of exposure to tropical and sub-tropical climates in Singapore and Queensland (Australia). Principal component analysis (PCA) based on the synchrotron macro ATR-FTIR spectral data revealed that, for the 9% (w/w) SiO2NP/polymer coating, a clear discrimination was observed between the control group (no environmental exposure) and those samples subjected to three years of environmental exposure in both Singapore and Queensland. The PCA loading plots indicated that, over the three year exposure period, a major change occurred in the triazine ring vibration in the melamine resins. This can be attributed to the triazine ring being very sensitive to hydrolysis under the high humidity conditions in tropical/sub-tropical environments. This work provides the first direct molecular evidence, acquired using a high-resolution mapping technique, of the climate-induced chemical evolution of a polyester coating. The observed changes in the surface topography of the coating are consistent with the changes in chemical composition.

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Section: Resultssupporting

confidence: 89%

Synchrotron macro ATR-FTIR microspectroscopic analysis of silica nanoparticle-embedded polyester coated steel surfaces subjected to prolonged UV and humidity exposure

et al. 2017

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“…The herbicidal, insecticidal and nematicidal properties of 1,2,3-benzotriazin-4-ones are well documented and the toxicities of these compounds have been extensively studied (Neunhoeffer 1977). lncorporation of these compounds into the human food chain is a cause for concern and a fast and effective method for the detection of the metabolites of these compounds is essential.…”

mentioning

confidence: 99%

The MS-MS Determination of the Fragmentation Pathways of Some Substituted 1,2,3-Benzotriazin-4-ones with Possible Applications in Metabolic Studies

Woodland

Lawson

Ostah

1996

Journal of Pharmacy and Pharmacology

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1,2,3-Benzotriazin-4-one derivatives are extensively used as herbicides, insecticides and nematicides. Incorporation of these compounds into the human food chain is a cause for concern, since their toxicity to man is well documented. This work describes the development of a data-base of classical 1,2,3-benzotriazin-4-one fragmentation patterns and consequent sequential neutral mass losses which allows the prediction of the presence of a triazinone derived compound. Positive and negative ion tandem mass spectrometry techniques were employed since they allow rapid and sensitive structural characterization of drugs and their metabolites in biological fluids through the unambiguous monitoring of daughter ions from pre-selected primary ions.

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4-Methyl-1,2,3-triazine

Boger

Zhang

2001

Encyclopedia of Reagents for Organic Synthesis

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1,2,3-Triazines and their Benzo Derivatives

Cited by 10 publications

References 99 publications

Synchrotron macro ATR-FTIR microspectroscopic analysis of silica nanoparticle-embedded polyester coated steel surfaces subjected to prolonged UV and humidity exposure

Synchrotron macro ATR-FTIR microspectroscopic analysis of silica nanoparticle-embedded polyester coated steel surfaces subjected to prolonged UV and humidity exposure

The MS-MS Determination of the Fragmentation Pathways of Some Substituted 1,2,3-Benzotriazin-4-ones with Possible Applications in Metabolic Studies

4-Methyl-1,2,3-triazine

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