Fluorescent temperature sensor
US7497993B1 · kind B1 · utility
1Cited by
0References
11Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 7, 2004 |
| Grant date | Mar 3, 2009 |
| Priority date | — |
| Expiry date | May 14, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K11/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is a fluorescent temperature sensor or optical thermometer. The sensor includes a solution of 1,3-bis(1-pyrenyl)propane within a 1-butyl-1-1-methylpyrrolidinium bis(trifluoromethylsulfonyl)imide ionic liquid solvent. The 1,3-bis(1-pyrenyl)propane remains unassociated when in the ground state while in solution. When subjected to UV light, an excited state is produced that exists in equilibrium with an excimer. The position of the equilibrium between the two excited states is temperature dependent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.