Detection method
AssigneeThe University of Queensland
InventorsPaul Leslie Burn, Paul Edward Shaw
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Abstract
The present invention relates to an optical sensing element for detection of a narcotic, the optical sensing element comprising a fluorescent sensing compound provided on a substrate, wherein emission of the fluorescent sensing compound is quenched in the presence of the narcotic, and wherein the fluorescent sensing compound is non-polymeric and comprises an electron donor moiety, an electron acceptor moiety and a moiety that influences solubility of the compound in a solvent. Sensing devices incorporating the sensing element and methods of detecting narcotics are also described.
Claims19
An optical sensing element for detection of a narcotic, the optical sensing element comprising a fluorescent sensing compound provided on a substrate, wherein emission of the fluorescent sensing compound is quenched in the presence of the narcotic, and wherein the fluorescent sensing compound is non-polymeric and is represented by general formula (IA):
- AaBbCcDdEe (IA)
- in which:
- A comprises one or more of fluorenyl, bisfluorenyl, phenyl, thiophenyl, and terphenyl;
- B is an electron acceptor moiety;
- C is a moiety that influences solubility of the compound in a solvent;
- D is a modifier moiety that enables fine tuning of the optoelectronic properties of the sensing compound;
- E is a branching moiety;
- a is an integer of 1 or more;
- b is an integer of 1 or more;
- c is an integer of 1 or more;
- d is an integer of 0 to less than or equal to b;
- and
- e is 0 or 1.
An optical sensing element for detection of a narcotic, the optical sensing element comprising a fluorescent sensing compound provided on a substrate, wherein emission of the fluorescent sensing compound is quenched in the presence of the narcotic, and wherein the fluorescent sensing compound is non-polymeric and is represented by general formula (IA):
- AaBbCcDdEe (IA)
- in which:
- A is an electron donor moiety;
- B comprises one or more of benzothiadiazolyl, benzoxadiazolyl, oxazolyl, triazinyl, imidazolyl, pyridinyl and quinoxalinyl;
- C is a moiety that influences solubility of the compound in a solvent;
- D is a modifier moiety that enables fine tuning of the optoelectronic properties of the sensing compound;
- E is a branching moiety;
- a is an integer of 1 or more;
- b is an integer of 1 or more;
- c is an integer of 1 or more;
- d is an integer of 0 to less than or equal to b;
- and
- e is 0 or 1.
An optical sensing element for detection of a narcotic, the optical sensing element comprising a fluorescent sensing compound provided on a substrate, wherein emission of the fluorescent sensing compound is quenched in the presence of the narcotic, and wherein the fluorescent sensing compound is non-polymeric and is represented by general formula (IA):
- AaBbCcDdEe (IA)
- in which:
- A is an electron donor moiety;
- B is an electron acceptor moiety;
- C is a moiety that influences solubility of the compound in a solvent;
- D comprises one or more of Rhodanine, a vinyl cyano ester, and a vinyl dicyano vinyl diester;
- E is a branching moiety;
- a is an integer of 1 or more;
- b is an integer of 1 or more;
- c is an integer of 1 or more;
- d is an integer of 0 to less than or equal to b;
- and
- e is 0 or 1.
Dependencies are inferred from the claim text.