Photoactivatable chemiluminescent matrices
First Claim
1. A method for determining the presence or absence of an analyte, said method comprising:
- irradiating a composition suspected of containing the analyte, said composition comprising a non-particulate solid matrix or a particulate matrix, said matrix having incorporated therein (1) a photosensitizer that upon irradiation generates singlet oxygen and (2) a chemiluminescent compound activatable by the singlet oxygen; and
determining the presence of the analyte.
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Abstract
Methods for labeling a material are disclosed. The methods comprise combining with the material (a) a photosensitizer capable upon irradiation of generating singlet oxygen and (b) a chemiluminescent compound capable of being activated by singlet oxygen wherein the photosensitizer and the chemiluminescent compound are incorporated in a particulate matrix or a non-particulate solid matrix. The particulate matrix can be solid or fluid. The methods allow for generating delayed luminescence, which can be realized upon irradiation of the matrix. The methods have application to the determination of an analyte in a medium suspected of containing the analyte. One method comprises subjecting a medium suspected of containing an analyte to conditions under which a complex of specific binding pair (sbp) members is formed in relation to the presence of the analyte and determining whether the sbp member complex has formed by employing as a label a single composition having both chemiluminescent and photosensitizer properties. Upon activation of the photosensitizer property singlet oxygen is generated and activates the chemiluminescent property. Compositions and kits are also disclosed.
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Citations
74 Claims
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1. A method for determining the presence or absence of an analyte, said method comprising:
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irradiating a composition suspected of containing the analyte, said composition comprising a non-particulate solid matrix or a particulate matrix, said matrix having incorporated therein (1) a photosensitizer that upon irradiation generates singlet oxygen and (2) a chemiluminescent compound activatable by the singlet oxygen; and determining the presence of the analyte. - View Dependent Claims (2)
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3. A method for labeling a material, said method comprising:
combining with said material (1) a photosensitizer that upon irradiation generates singlet oxygen, and (2) a chemiluminescent compound activatable by the singlet oxygen, wherein said photosensitizer and said chemiluminescent compound are incorporated in a non-particulate solid matrix or a particulate matrix. - View Dependent Claims (4)
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5. A method for detecting a material, said method comprising:
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(a) combining with said material (1) a photosensitizer that upon irradiation generates singlet oxygen, and (2) a chemiluminescent compound activatable by the singlet oxygen, wherein said photosensitizer and said chemiluminescent compound are incorporated in a solid or particulate matrix; (b) irradiating said material with light of wavelength 200-1000 nm; (c) detecting light emitted by said chemiluminescent compound; and (d) correlating the amount of detected light to the presence of the material. - View Dependent Claims (6, 7)
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- 8. A method for generating delayed luminescence, said method comprising the step of irradiating a composition comprising a solid or particulate matrix having incorporated therein (1) a photosensitizer that upon irradiation generates singlet oxygen, and (2) a chemiluminescent compound activatable by the singlet oxygen.
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13. A method for determining the presence of an analyte, comprising the steps of:
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subjecting a medium suspected of containing an analyte to conditions under which a complex of specific binding pair (sbp) members is formed in relation to the presence of said analyte; determining whether said sbp member complex has formed by employing as a label a single composition having both chemiluminescent and photosensitizer properties such that upon activation of said photosensitizer property singlet oxygen is generated and activates said chemiluminescent property; and determining the presence of said analyte. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A method for determining an analyte, said method comprising:
providing in combination (1) a medium suspected of containing said analyte, (2) a label reagent comprising a first specific binding pair (sbp) member associated with a single composition having both photosensitizer and chemiluminescent properties such that upon activation of said photosensitizer property singlet oxygen is generated and activates said chemiluminescent property, wherein said first sbp member binds to said analyte or to a second sbp member to form a complex related to the presence of said analyte, activating said photosensitizer property and detecting the amount of luminescence generated by said chemiluminescent property, the amount thereof being related to the amount of analyte in said medium. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method for determining the presence of an analyte, said method comprising:
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providing in combination (1) a medium suspected of containing said analyte, (2) a label reagent comprising a first specific binding pair (sbp) member associated with a particle having a photosensitizer that upon irradiation generates singlet oxygen and a chemiluminescent compound activatable by the singlet oxygen such that, upon irradiating said photosensitizer, singlet oxygen is generated and activates said chemiluminescent compound, wherein said first sbp member binds to said analyte or to a second sbp member to form a complex related to the presence of said analyte; irradiating said photosensitizer; and detecting the amount of luminescence generated by the chemiluminescent compound, the amount thereof being related to the amount of analyte in said medium. - View Dependent Claims (26, 27, 28, 29)
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- 30. A composition comprising a solid matrix having incorporated therein a photosensitizer that upon activation generates singlet oxygen and a chemiluminescent compound activatable by the singlet oxygen.
- 43. A composition comprising a particle having incorporated therein a photosensitizer that generates singlet oxygen and a chemiluminescent compound activatable by the singlet oxygen, said particle being bound to a molecule useful in the detection of an analyte.
- 54. A composition comprising fluid particles selected from the group consisting of oil droplets, liposomes and emulsions having incorporated therein a photosensitizer that upon activation of generating singlet oxygen and a chemiluminescent compound activatable by the singlet oxygen.
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69. A method for determining a leak in a fluidic system, said method comprising:
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introducing into a fluid in the fluidic system a composition comprising a non-particulate solid matrix or a particulate matrix, said matrix having incorporated therein (1) a photosensitizer that upon irradiation generates singlet oxygen, and (2) a chemiluminescent compound activatable by the singlet oxygen; irradiating the fluid to activate the photosensitizer; determining the presence of a leak by examining the system to determine if any luminescence is escaping from the system. - View Dependent Claims (70)
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71. A method for determining wear in a mechanical pad comprising:
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incorporating into the mechanical part a composition comprising a non-particulate solid matrix or a particulate matrix, said matrix having incorporated therein (1) a photosensitizer that upon irradiation generates singlet oxygen, and (2) a chemiluminescent compound activatable by the singlet oxygen; determining wear in the part by irradiating the part and detecting the presence of luminescence. - View Dependent Claims (72)
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73. A method for detecting the emission of light comprising:
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irradiating a composition comprising a non-particulate solid matrix or a particulate matrix, said matrix having incorporated therein (1) a photosensitizer that upon irradiation generates singlet oxygen, and (2) a chemiluminescent compound activatable by the singlet oxygen; and detecting light emitted by said chemiluminescent compound. - View Dependent Claims (74)
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Specification