Chemical sensors
AssigneeBASF SE
InventorsWolfgang Schrepp, Ramesh C. Ahuja, Wolfgang Budach, Dietmar Moebius
Life of this patent
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Abstract
A chemical sensor consists of (a) a solid substrate, (b) a layer (D) which is applied to the substrate and contains one or more fluorescent compounds and (c) a layer (A) which is applied to the layer (D) and contains one or more coupling components (K) which, as a result of reacting with the analyte, give rise to one or more specific absorption bands, some or all of which overlap in the spectrum with the emission of the fluorescent compound of layer (D).
Claims12
A chemical sensor to be used in a solvent containing an analyte consisting of
- (a) a solid substrate,
- (b) a layer (D) which is applied to the substrate and consists essentially of one or more fluorescent compounds and
- (c) a layer (A) which is applied to the layer (D) and consists essentially of one or more coupling components (K) which, as a result of reacting with the analyte, give rise to one or more specific absorption bands, some or all of which overlap in the spectrum with the emission of the fluorescent compound of layer (D).
A chemical sensor to be used in a solvent containing an analyte, consisting of
- (a) a solid substrate,
- (b) a layer (D) applied to the substrate and consisting essentially of at least one fluorescent compound,
- (c) a layer (Z) having a defined dipole moment applied to layer (D), and
- (d) a layer (A) applied to layer (Z) containing at least one coupling components (K) which, as a result of reacting with the analyte, gives rise to one or more specific absorption bands, at least one of which overlaps in the spectrum with the emission of the fluorescent compound of layer (D), the intermediate layer (Z) between layers (D) and (A) controlling the chemical equilibria of layers (D) and (A).
Dependencies are inferred from the claim text.