Back to results
US 6,610,848 B1Granted
Platinum complex dioxygen sensors
AssigneeLumet LLC
InventorsRobert S. Pilato, Neil V. Bough, Kelly Van Houten, Danica C. Heath
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeLumet LLC
InventorsRobert S. Pilato, Neil V. Bough, Kelly Van Houten, Danica C. Heath
Estimating the term…
The luminescent platinum 1,2-enedithiolates are dual emitters with a short-lived 1ILCT* singlet and long-lived oxygen-sensing 3ILCT* triplet (ILCT; intraligand charge transfer transition) emissive excited states. Since only the triplet is quenched by molecular oxygen, the singlet serves as an internal standard for dioxygen measurements. This allows the concentration of dioxygen to be determined from the ratio of the singlet/triplet emissions. The novel dual emitters are readily polymer encapsulated to allow measurement of dioxygen in a range of settings. These polymer encapsulated dual emitters will serve as a drop-in step-out replacement sensor for currently available dioxygen measuring devices.
L2Pt{S2C2(2-pyridine)(H)} and luminescent salts thereof, wherein L2 is either dppe or dppm and wherein dppe is 1,2-bis(diphenylphosphino) ethane and dppm is 1,2-bis(diphenylphosphino) methane.
L2Pt{S2C2(4-pyridine)(H)} and luminescent salts thereof, wherein L2 is dppe, dppm or dppp and wherein dppe is 1,2-bis(diphenylphosphino) ethane, dppm is 1,2-bis(diphenylphosphino) methane and dppp is 1,2-bis(diphenylphosphino) propane.
The compound [dppe Pt{S2C2(CH2CH2-N-2-pyridinium)}]+ and luminous salts thereof, wherein dppe is 1,2-bis(diphenylphosphino) ethane.
The compound [L2Pt{S2C2(Me-N-4-pyridinium)(H)}]+ and luminous salts thereof, wherein L2 is dppe, dppm or dppp and wherein dppe is 1,2-bis(diphenylphosphino) ethane, dppm is 1,2-bis(diphenylphosphino) methane and dppp is 1,2-bis(diphenylphosphino) propane.
The compound L2Pt{S2C2(CH2CH2-N-2-pyridinium)}]+ and luminous salts thereof, wherein L2 is dppe, dppm or dppp and wherein dppe is 1,2-bis(diphenylphosphino) ethane, dppm is 1,2-bis(diphenylphosphino) methane and dppp is 1,2-bis(diphenylphosphino) propane.
Dependencies are inferred from the claim text.