The application of fluorescent layers, created by the sol-gel process, in an optical cryogenic temperature sensor

Bertrand, S.; Bresson, François; Audebert, P.; Tribillon, G.

doi:10.1016/0030-4018(95)00127-t

Optics Communications

1995

DOI: 10.1016/0030-4018(95)00127-t

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The application of fluorescent layers, created by the sol-gel process, in an optical cryogenic temperature sensor

S. Bertrand¹,

François Bresson²,

P. Audebert

et al.

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Cited by 5 publications

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Fullerene C₆₀ immobilized in polymethylmethacrylate film as an optical temperature sensing material

Amao¹,

Okura

2000

Analusis

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Recent years have seen a growing interest in optical sensors based on oxygen-induced or temperature-induced changes in the luminescence intensity of organic dyes [1][2][3][4]. Probes available for optical temperature sensor are fluorescent, thermal-quenchable and non oxygen-quenchable organic and inorganic dyes, such as coumarin, perylene, pyronin and rare earth metal compounds [5][6][7]. One of the candidate probes available for the optical temperature sensor is fullerene. Fullerenes possess useful electronic and photochemical properties [8][9][10]. As the fluorescence lifetime of fullerene C 60 is estimated to be 1.1 ns, the fluorescence of C 60 is not quenched by oxygen [11]. Thus, the fluorescence intensity of C 60 is changed by temperature changes. Thus, fullerene is attractive compound for optical temperature sensing based on the fluorescence intensity change thermally.In this letter we describe a new optical temperature sensing material, fullerene C 60 immobilized in polymethylmethacrylate (PMMA) film, and its temperature sensing properties. ExperimentalC 60 was obtained from Tokyo Kasei Inc. and was purified by recrystalization with toluene-benzene. PMMA (average M.W. 280 000, GPC grade) was purchased from Aldrich. The C 60 immobilized in PMMA film was formed by casting a mixture of 20 wt. % PMMA and C 60 in toluene onto 1.4 × 5.0 cm non-luminescent glass slides. The C 60 concentration in the film was approximately 1.0 × 10 -3 mol dm -3 . The films were dried at room temperature and stored in the dark prior to use. The thickness of the films was determined by the use of a micron-sensitive calliper. The thickness of the prepared film was c.a. 50 µm. The fluorescence spectrum of the C 60 film was measured using a Shimadzu RF-5300PC spectrofluorophotometer with a 150 W Xenon lamp as the excitation light source. The excitation and emission bandpasses were 10 and 5.0 nm, respectively. The sample film was mounted at a 45º angle to minimize light scattering from the sample and substrate. The temperature (260-373 K) was controlled using an Oxford Instrument Optistat-DN cryostat system. All the experiments were carried out under ambient condition.Theory of optical temperature sensing based on the fluorescence intensity change of C 60 film is as follows. The quantum yield (Φ) in the absence of quencher is given bywhere I a is the absorption intensity. k L and k D are the rate constants for the fluorescence and the radiationless deactivation, respectively. The deactivation term, k D is decomposed into a temperature-independent part k 0 and a temperature-dependent part k 1 that is related to thermally activated intersystem crossing. The k 1 can be assumed to have an Arrhenius form as follows:where A, E and R are a constant, the Arrhenius activation energy and the universal gas constant, respectively. The eq.(1) is re-written by the eq. (2) of the radiationless deactivation rate: Keyword. Optical temperature sensing -fullerene -fluorescence quenching -Arrhenius activation energy -polymer film.

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“…

…”

mentioning

confidence: 99%

Fullerene C₆₀ immobilized in polymethylmethacrylate film as an optical temperature sensing material

Amao¹,

Okura

2000

Analusis

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Inclusion of fluorophores in hybrid sol-gel coatings; application to in situ temperature measurements

et al. 1996

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Fluorescence temperature sensing on rotating samples in the cryogenic range

Bresson

Devillers

1999

Review of Scientific Instruments

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Articles you may be interested inEr 3+ -doped BaTiO 3 nanocrystals for thermometry: Influence of nanoenvironment on the sensitivity of a fluorescence based temperature sensor Appl. Phys. Lett. 84, 4753 (2004); 10.1063/1.1760882 Effects of high-temperature heat treatment on Nd 3+ -doped optical fibers for use in fluorescence intensity ratio based temperature sensing Rev. Sci. Instrum. 74, 3524 (2003); 10.1063/1.1578706Optical temperature sensing using upconversion fluorescence emission in Er 3+ /Yb 3+ -codoped chalcogenide glass Appl.

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The application of fluorescent layers, created by the sol-gel process, in an optical cryogenic temperature sensor

Cited by 5 publications

References 4 publications

Fullerene C₆₀ immobilized in polymethylmethacrylate film as an optical temperature sensing material

Fullerene C₆₀ immobilized in polymethylmethacrylate film as an optical temperature sensing material

Inclusion of fluorophores in hybrid sol-gel coatings; application to in situ temperature measurements

Fluorescence temperature sensing on rotating samples in the cryogenic range

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Product

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The application of fluorescent layers, created by the sol-gel process, in an optical cryogenic temperature sensor

Cited by 5 publications

References 4 publications

Fullerene C60 immobilized in polymethylmethacrylate film as an optical temperature sensing material

Fullerene C60 immobilized in polymethylmethacrylate film as an optical temperature sensing material

Inclusion of fluorophores in hybrid sol-gel coatings; application to in situ temperature measurements

Fluorescence temperature sensing on rotating samples in the cryogenic range

Contact Info

Product

Resources

About

Fullerene C₆₀ immobilized in polymethylmethacrylate film as an optical temperature sensing material

Fullerene C₆₀ immobilized in polymethylmethacrylate film as an optical temperature sensing material