Untersuchungen an gebrauchten Hydraulikölen auf Rapsölbasis aus einer Langzeit‐Praxisstudie

Vosmann, Klaus; Sandner, B.; Spilker, Mary E.; Ihrig, Harry K.

doi:10.1002/lipi.19950970712

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“…Recalling the areas of analytical chemistry where the sensing of free carboxylates is most important, − blood plasma and food products are the most obvious ones . Whereas FFA concentration in food can amount to 0.1% or more, blood plasma levels can vary between 0.2 and 10.0 mM, 19a, depending on the health status of the organism and lying well within the applicable sensing range of M1Me , vide ante.…”

Section: Synthesis Spectroscopic Properties and Performance Of The Se...mentioning

confidence: 99%

“…The sensory and dietetic quality of food often depends on the amount of naturally occurring FFAs or FFAs that are produced during storage, technological processing or cooking of foodstuff . FFAs can also determine the quality and performance of industrial products such as, e.g., hydraulic oils or (bio)diesels . In biochemistry, long-chain carboxylic acids and carboxylates are some of the most prominent metabolic effectors and indicators.…”

Section: Introductionmentioning

confidence: 99%

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Rational Design of a Chromo- and Fluorogenic Hybrid Chemosensor Material for the Detection of Long-Chain Carboxylates

et al. 2004

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A strategy for the rational design of a new optical sensor material for the selective recognition of long-chain carboxylates in water is presented. The approach relies on the combination of structure-property relationships to single out the optimal molecular sensor unit and the tuning of the sensing characteristics of an inorganic support material. A spacer-substituted 7-urea-phenoxazin-3-one was employed as the signaling moiety and a mesoporous trimethylsilylated UVM-7 (MCM-41 type) material served as the solid support. The sensor material shows the advantageous features of both modules that is absorption and emission in the visible spectral range, a fluorescence red-shift and enhancement upon analyte coordination, and the amplification of noncovalent (binding) and hydrogen-bonding (recognition) interactions in the detection event. Besides these basic results that are related to the design and performance of the sensor material, the paper discusses general aspects of amido-substituted phenoxazinone photophysics and addresses some general features of molecular anion recognition chemistry in aqueous vs nonaqueous media, utilizing steady-state and time-resolved optical as well as NMR spectroscopies. Detailed studies on potentially competing biochemical species and a first access to the schematic model of the response of the sensor material as obtained by a combination of fluorescence lifetime distribution analysis and Langmuir-type fitting of the gross binding constants complement the key issues of the paper.

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Section: Synthesis Spectroscopic Properties and Performance Of The Se...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rational Design of a Chromo- and Fluorogenic Hybrid Chemosensor Material for the Detection of Long-Chain Carboxylates

et al. 2004

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Untersuchungen an gebrauchten Hydraulikölen auf Rapsölbasis aus einer Langzeit‐Praxisstudie

Cited by 1 publication

References 1 publication

Rational Design of a Chromo- and Fluorogenic Hybrid Chemosensor Material for the Detection of Long-Chain Carboxylates

Rational Design of a Chromo- and Fluorogenic Hybrid Chemosensor Material for the Detection of Long-Chain Carboxylates

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