The present invention is related to a method of determining the temperature in a system, said system comprising a molecular heater fraction and a molecular thermometer fraction, and to an integrated system for temperature determination and temporally and spatially resolved thermal profile detection,
The present invention is related to a method of determining the temperature in a system, said system comprising a molecular heater fraction and a molecular thermometer fraction, and to an integrated system for temperature determination and temporally and spatially resolved thermal profile detection, and to uses of such system.
대표청구항▼
The invention claimed is: 1. A method of determining a temperature in a system, said system comprising a molecular heater fraction and a molecular thermometer fraction, each of the fractions being integrated into a matrix, wherein said method comprises the following steps: photoexciting the molecul
The invention claimed is: 1. A method of determining a temperature in a system, said system comprising a molecular heater fraction and a molecular thermometer fraction, each of the fractions being integrated into a matrix, wherein said method comprises the following steps: photoexciting the molecular heater fraction to heat said system, photoexciting the molecular thermometer fraction, measuring emission of radiation from the molecular thermometer fraction, determining a temperature of the system based on said measured emitted radiation, wherein said molecular heater fraction is different from said molecular thermometer fraction and does not form part thereof, and vice versa. 2. The method according to claim 1, wherein said molecular heater fraction comprises a first chemical species or first group of chemical species, and said molecular thermometer fraction comprises a second chemical species or a second group of chemical species, and wherein said first chemical species or first group of chemical species is different from said second chemical species or said second group of chemical species. 3. The method according to claim 1 characterized in that the molecular heater fraction and the molecular thermometer fraction are integrated into a common matrix. 4. The method according to claim 1, characterized in that the molecular heater fraction is integrated into a matrix and forms a molecular heater layer and the molecular thermometer fraction is integrated into a matrix and forms a molecular thermometer layer. 5. The method according to claim 4, characterized in that the system comprises at least one molecular heater layer and at least one molecular thermometer layer. 6. The method according to claim 5, characterized in that the system comprises two or more molecular heater layers and two or more molecular thermometer layers. 7. The method according to claim 6, characterized in that the molecular heater layers and the molecular thermometer layers are arranged in alternating order. 8. The method according to claim 4, characterized in that the molecular heater layer is a multilayer. 9. The method according to claim 1 characterized in that photoexciting the molecular heater fraction occurs by irradiating with wavelengths in the range from 220 nm to 1064 nm. 10. The method according to claim 9 characterized in that photoexciting the molecular heater fraction occurs by irradiating with wavelengths in the range from 300-700 mn. 11. The method according to claim 1, characterized in that the molecular thermometer fraction has emission characteristics that are temperature dependent. 12. The method according to claim 1, characterized in that the molecular thermometer fraction is provided: by molecules of one chemical species said molecules having two or more emission bands the population of which is temperature dependent, by molecules of two different chemical species each species having a temperature dependent emission that is different from that of the other species, and/or by molecules having thermally activated bands ("hot bands"). 13. The method according to claim 1, wherein the emission of radiation from the molecular thermometer fraction is measured by measurements of luminescence intensity ratio. 14. The method according to claim 13, characterized in that the luminescence intensity ratio is the ratio of luminescence intensity at two different wavelengths. 15. The method according to claim 1, characterized in that the matrix is luminescent. 16. The method according to claim 1, characterized in that the lifetime(s) of the excited state(s) of the molecular thermometer fraction is (are) in the range from ps to μs. 17. The method according to claim 15, characterized in that the lifetime(s) of the excited state(s) of the molecular thermometer fraction is (are) greater than the lifetime(s) of the excited state(s) of the matrix. 18. The method according to claim 1, characterized in that the photoexcitation is caused by continuous excitation or by pulsed excitation. 19. The method according to claim 1, characterized in that the molecular heater fraction is provided by photosensitive molecules. 20. The method according to claim 1, characterized in that the photoexcitation is achieved using polarised radiation. 21. The method according to claim 1, characterized in that anisotropic molecules are used as the molecular heater/thermometer fraction. 22. The method according to claim 21, characterized in that the anisotropic molecules are photoaddressable. 23. The method according to claim 22, characterized in that the photoadressable anisotropic molecules are used as molecular heaters. 24. The method according to claim 1, characterized in that the molecular heater fraction is provided by a dye or combination of dyes selected from the group comprising any kind of conjugated small molecules and polymers with absorption suited to the wavelength of interest, in particular fulgides, diarylethenes, spiropyrans, azobenzenes, stylbenes, "donor-acceptor" groups and any polymer containing any of the aforementioned groups. 25. The method according to claim 1, characterized in that the molecular thermometer fraction is provided by a dye or combination of dyes selected from the group comprising porphyrins, metallo-porphyrins, fluorenes, and triphenyl-amines. 26. The method according to claim 1, comprising a calibration step: Performing a calibration of said system by photoexciting the molecular thermometer fraction, measuring emission of radiation from the photoexcited molecular thermometer fraction at at least two different temperatures of the system, measuring said at least two different temperatures of the system using an external means for measuring said temperatures, and correlating said measured emitted radiation with its corresponding temperature of the system. 27. The method according to claim 26, characterized in that said emission of radiation from the photoexcited molecular thermometer fraction is measured at a plurality of temperatures of the system, and said plurality of temperatures of the system are measured using an external means for measuring said temperatures. 28. The method according to claim 26, characterized in that said external means for measuring said temperatures is a thermometer or a temperature probe or a temperature sensor. 29. The method according to claim 26, characterized in that, after correlating said measured emitted radiation with its corresponding temperature of the system, said correlation is represented as a plot of measured emitted radiation from the photoexcited molecular thermometer fraction versus temperature of the system. 30. The method according to claim 26, characterized in that said calibration step is performed prior to the step of photoexciting the molecular heater fraction as recited in claim 1, or after the step of determining a temperature of the system as recited in claim 1. 31. The method according to claim 26, characterized in that said calibration step is performed independently of any of the steps recited in claim 1. 32. The method according to claim 26, characterized in that said emission of radiation from the photoexcited thermometer fraction in said calibration is measured as luminescence intensity ratio, wherein said luminescence intensity ratio is the ratio of luminescence at two different wavelengths. 33. The method according to claim 1, characterized in that said photoexciting the molecular heater fraction occurs at the same wavelength as said photoexciting the molecular thermometer fraction. 34. The method according to claim 1, characterized in that said photoexciting the molecular heater fraction occurs at a different wavelength to said photoexciting the molecular thermometer fraction. 35. The method according to claim 34, characterized in that said wavelength for photoexciting said molecular heater fraction is greater than said wavelength for photoexciting step molecular thermometer fraction.
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