Oxygen sensors based on hard-soft acid-base relationships
AssigneeHoneywell International Inc.
InventorsBogdan Catalin Serban, Mihai N. Mihaila, Octavian Buiu, Stefan Dan Costea
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Abstract
A fluorescence quenching oxygen sensor (100) comprises a support (102) having coated thereon; a compound having hard or soft acid groups (104); and one or more pyrene compounds (106) represented by Y—R-Pyrene (I) attached to the compound having hard or soft basic groups; wherein Y is a hard or soft basic group and R is an aliphatic linking group having 1 to 19 carbon atoms. The sensor can be used to prepare a fluorescence quenching oxygen detector.
Claims12
A fluorescence quenching oxygen sensor (100) comprising a support (102) having coated thereon;
- (A) TiO2 (104) having either free Ti+4 or OH groups at the TiO2 surface;
- and
- one or more pyrene compounds (106) represented by
- Y—R-Pyrene (I)
- attached to the TiO2 surface;
- wherein Y is a is a carboxylic acid group or a carboxylate group and R is an aliphatic linking group having 1 to 19 carbon atoms;
- or
- (B) Cu2O (104);
- and
- one or more pyrene compounds (106) represented by
- Y—R-Pyrene (I)
- attached to the Cu2O surface;
- wherein Y is a thiol group, or the anion of a thiol group and R is an aliphatic linking group having 1 to 19 carbon atoms.
A fluorescence quenching oxygen detector (200) comprising a support (202) having coated thereon;
- (A) TiO2 (204) having either free Ti+4 or OH groups at the TiO2 surface;
- and
- one or more pyrene compounds (206) represented by
- Y—R-Pyrene (I)
- attached to the TiO2 surface;
- wherein Y is a is a carboxylic acid group or a carboxylate group and R is an aliphatic linking group having 1 to 19 carbon atoms;
- or
- (B) Cu2O (204);
- and
- one or more pyrene compounds (206) represented by
- Y—R-Pyrene (I)
- attached to the Cu2O surface;
- wherein Y is a thiol group, or the anion of a thiol group and R is an aliphatic linking group having 1 to 19 carbon atoms;
- an excitation source (208);
- and
- a fluorescence detector (210).
A method of preparing a fluorescence quenching oxygen sensor (100) comprising coating onto a support (102);
- (A) TiO2 having either free Ti+4 or OH groups at the TiO2 surface (204);
- and
- one or more pyrene compounds (206) represented by
- Y—R-Pyrene (I)
- attached to the TiO2 surface;
- wherein Y is a is a carboxylic acid group or a carboxylate group and R is an aliphatic linking group having 1 to 19 carbon atoms;
- or
- (B) Cu2O (204);
- and
- one or more pyrene compounds (206) represented by
- Y—R-Pyrene (I)
- attached to the Cu2O surface;
- wherein Y is a thiol group, or the anion of a thiol group and R is an aliphatic linking group having 1 to 19 carbon atoms;
- wherein Y—R-Pyrene is represented by one or more of:
Dependencies are inferred from the claim text.