Photo-physical properties of anisole: temperature, pressure, and bath gas composition dependence of fluorescence spectra and lifetimes

Faust, S.; Dreier, Thomas; Schulz, Christof

doi:10.1007/s00340-013-5420-7

Cited by 33 publications

(16 citation statements)

References 40 publications

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“…At 403 K, the fluorescence signal is 49% of the room-temperature value. This is qualitatively consistent with literature results from gaseous anisole in nitrogen or carbon dioxide [19,20]. For liquid anisole dissolved in isooctane Geiler [10] measured at 403 K a signal decrease to 50%, and in iso-dodecane Mueller et al [21] measured at the same temperature a decrease to 28%.…”

Section: Fluorescence Properties Of Anisole In Watersupporting

confidence: 89%

Imaging of water droplet clusters on glass with simultaneous laser-induced fluorescence and near-infrared absorption

Mirschinka

Geiler

Kaiser

et al. 2021

ICLASS

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Water films and droplets on surfaces are important in the design of various processes. In the present work, two complementary non-invasive imaging techniques, laser-induced fluorescence (LIF) and near-infrared absorption (NIRA), were used simultaneously to quantify the deposited water mass in a simple spray-onto-plate experiment. LIF was applied in epiillumination with optical access from only one direction, but it requires the addition of a marker substance to the non-fluorescing water. Here, anisole (methoxybenzene) was used for this purpose. The present implementation of NIRA is based on the intensity ratio of light transmitted through the sample at two wavelengths, 1450 and 600 nm. Since water itself is the IR absorber, a tracer is not required. In a first step, in a thin-film cuvette the influence of temperature and film thickness on the measurement accuracy was investigated for both techniques. In a second set of experiments, water was sprayed onto a hot or cold quartz glass plate and simultaneously imaged with both techniques. From the measurements, advantages and weaknesses of both approaches were identified.

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Section: Fluorescence Properties Of Anisole In Watersupporting

confidence: 89%

Imaging of water droplet clusters on glass with simultaneous laser-induced fluorescence and near-infrared absorption

Mirschinka

Geiler

Kaiser

et al. 2021

ICLASS

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“…8(a) shows the PL emission spectra excited at 270 nm, which is the excitation wavelength of anisole. (6,25) Similar to Fig. 7(b), the phosphor-derived emission peak was observed at 518 nm in all samples.…”

Section: Fabrication Of Zr-loaded Green-emitting Liquid Scintillatorssupporting

confidence: 80%

Development of Zr-loaded Green-emitting Liquid Scintillator for Detection of Neutrinoless Double Beta Decay

Watanabe¹,

Magi²,

Koshimizu³

et al. 2021

Sensors and Materials

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In this study, zirconium acetylacetonate (Zr(acac) 4 ) containing the isotope 96 Zr was studied as a liquid scintillator for the possible detection of neutrinoless double beta decay. To avoid the absorption of scintillation by ligand absorption, the phosphor Coumarin 7 was assessed as a green-emitting liquid scintillator. By dissolving 3 g/L of Coumarin 7 in anisole, a liquid scintillator with a light yield of 12000 photons/MeV was fabricated. Subsequently, the liquid scintillator was loaded with Zr(acac) 4 . In the liquid scintillator containing 10 wt% Zr(acac) 4 , the light yield of scintillation was 370 photons/MeV for a blue-emitting liquid scintillator, while a light yield of 1900 photons/MeV was determined for a green-emitting liquid scintillator. The scintillation decay time constants of the fast component were around 4.4 ns. Liquid scintillators with a high light yield that avoid absorption by Zr(acac) 4 can be prepared using Coumarin 7.

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“…Faust et al [20] [21] compared the photo-physical properties of toluene, naphthalene, and anisole in terms of temperature, pressure, and bath gas composition dependencies of fluorescence spectra and lifetimes. These authors showed that, with 266 nm excitation the fluorescence spectrum of anisole at room temperature is red-shifted by 10-15 nm with respect to that of toluene.…”

Section: Calibration Of the Single Excitation Two-colour Detection Tementioning

confidence: 99%

“…at long and static residence time of anisole. Indeed, Faust et al [20] observed that at temperatures beyond 1000 K significant pyrolysis may occur due to long residence time of the gas mixture in the vicinity of the heated walls.…”

Section: Calibration Of the Single Excitation Two-colour Detection Tementioning

confidence: 99%

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

Tran¹,

Guibert

Morin

et al. 2015

Combustion and Flame

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, et al.. Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence. Combustion and Flame, Elsevier, 2015, 162, pp.3960 -3970. <10.1016/j.combustflame.2015 AbstractAdvanced combustion processes induced by self-ignition mechanisms in piston engines, such as Homogeneous Charge Compression Ignition (HCCI), especially need an accurate spatio-temporal temperature information because their phenomenology therefore their performances highly depend on the thermal conditions. The objective of this study is to measure the temperature distribution inside a rapid compression machine (RCM) using anisole planar laser induced fluroescence. The present paper gives a new insight into the interpretation of RCM autoignition data. It also brings useful information for kinetics-related combustion research and combustion modeling. The anisole planar laser-induced fluorescence (PLIF) technique is applied, in order to observe the formation and the evolution of temperature heterogeneities in the combustion chamber prior to the autoignition process. Anisole is used as a novel tracer species, and the fluorescence signal's dependence on parameters, such as temperature, pressure and bath gas composition, is quantified in a high-pressure, high-temperature facility. Calibration of the fluorescence signal is defined under RCM-related temperature and pressure conditions and a protocol is proposed for postprocessing of the PLIF image sequences, allowing the quantitative field temperatures to be determined at successive instants following compression. In order to gain a better understanding of the mixture process, Particle Image Velocimetry (PIV) measurements are analysed under the same conditions. The correlation between thermal and aerodynamic phenomena is determined. The temperature field is found to be non-uniform, with hot and cold centre positions resulting from recirculation inside the chamber, combined with heat transfer effects from the chamber wall.

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Photo-physical properties of anisole: temperature, pressure, and bath gas composition dependence of fluorescence spectra and lifetimes

Cited by 33 publications

References 40 publications

Imaging of water droplet clusters on glass with simultaneous laser-induced fluorescence and near-infrared absorption

Imaging of water droplet clusters on glass with simultaneous laser-induced fluorescence and near-infrared absorption

Development of Zr-loaded Green-emitting Liquid Scintillator for Detection of Neutrinoless Double Beta Decay

Temperature measurements in a rapid compression machine using anisole planar laser-induced fluorescence

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