Luminescent detection of hydrazine and hydrazine derivatives
First Claim
1. A method for determination of hydrazine or a hydrazine derivative, comprising:
- providing a material comprising a luminescent polymer, wherein the luminescent polymer comprises at least one oxidized site and/or wherein the luminescent polymer is in contact with at least one quencher molecule;
exposing the material to a sample suspected of containing hydrazine or a hydrazine derivative, wherein hydrazine and/or the hydrazine derivative, if present, interacts with the luminescent polymer via a redox reaction to cause an increase in the luminescence intensity of the polymer;
determining the increase in luminescence intensity of the polymer, thereby determining hydrazine or the hydrazine derivative.
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Abstract
The present invention generally relates to methods for modulating the optical properties of a luminescent polymer via interaction with a species (e.g., an analyte). In some cases, the present invention provides methods for determination of an analyte by monitoring a change in an optical signal of a luminescent polymer upon exposure to an analyte. Methods of the present invention may be useful for the vapor phase detection of analytes such as explosives and toxins. The present invention also provides methods for increasing the luminescence intensity of a polymer, such as a polymer that has been photobleached, by exposing the luminescent polymer to a species such as a reducing agent.
76 Citations
41 Claims
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1. A method for determination of hydrazine or a hydrazine derivative, comprising:
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providing a material comprising a luminescent polymer, wherein the luminescent polymer comprises at least one oxidized site and/or wherein the luminescent polymer is in contact with at least one quencher molecule; exposing the material to a sample suspected of containing hydrazine or a hydrazine derivative, wherein hydrazine and/or the hydrazine derivative, if present, interacts with the luminescent polymer via a redox reaction to cause an increase in the luminescence intensity of the polymer; determining the increase in luminescence intensity of the polymer, thereby determining hydrazine or the hydrazine derivative. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for determining an analyte by increasing the luminescence intensity of a polymer, comprising:
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exposing a material comprising a luminescent polymer to an analyte comprising hydrazine or a hydrazine derivative, wherein, in the absence of the analyte, the luminescent polymer comprises non-radiative pathways, and, in the presence of the analyte, the analyte interacts with the material via a redox reaction to reduce the number of non-radiative pathways of the polymer, thereby increasing the luminescence intensity of the polymer. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification