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Photo-quenched of the luminiscence signal in Co(II)-doped alumina prepared by the sol–gel method

Co(II)-doped alumina monoliths prepared by the sol?gel method were laser irradiated producing fluorescence. The intensity of this defect-induced fluorescence was exponentially reduced with the irradiation time to practically disappear.

出版机构:Elsevier Science

刊物名称:Journal of Non-Crystalline Solids

出版时间:2011

ISSN:0022-3093

数据源:报刊文摘

Fluorescence and phosphorescence behavior of TPD doped and TPD neat films

Photoluminescence spectra of N,N?-bis(3-methylphenyl)-N,N?-bis(phenyl)-benzidine (TPD) are studied in a temperature range from 10K to room temperature using a neat TPD film, and 5wt.% TPD doped films with polystyrene (PS), 4,4?-N,N?-dicarbazole-biphenyl (CBP), and polycarbonate (PC) as hosts.

出版机构:Elsevier Science

刊物名称:Thin Solid Films

出版时间:2009

ISSN:0040-6090

数据源:报刊文摘

Nonlinear Luminescence Quenching in Eu2O3

We report a laser spectroscopic investigation of saturation effects in the spectra and dynamics of Eu2O3. The saturation effects occur at high laser intensity and appear as dips in the center of the fluorescence excitation lines and as a shortening of the 5D0 excited-state decay curve.

出版机构:Taylor & Francis

刊物名称:Spectroscopy Letters

出版时间:2007

ISSN:0038-7010

数据源:报刊文摘

CARBOXYLATED POLYTHIOPHENES: POLYMER BIOSENSORS IN LIQUID AND SOLID STATES*

The fluorescence of carboxylated and water-soluble poly(3-thiophene acetic acid) (PTAA) and poly[2,5-(3-carboxymethyl urethanyl ethyl) thiophene] (H-PURET) are quenched by low concentrations of methyl viologen in aqueous solutions.

出版机构:Taylor & Francis

刊物名称:Journal of Macromolecular Science, Part A- Pure and Applied Chemistry

出版时间:2002

ISSN:1060-1325

数据源:报刊文摘

Microcontroller-based portable instrument for stabilised optical oxygen sensor

novel measurement system comprised of a portable electronic instrument with an opto-chemical sensor for atmospheric oxygen sensing is presented. Optical sensors based on luminescence quenching have been thoroughly investigated in the search for sufficient sensitivity and high stability.

出版机构:Elsevier Science

刊物名称:Sensors and Actuators B: Chemical

出版时间:2007

ISSN:0925-4005

数据源:报刊文摘

Photo-quenched luminescence in Co(II)-doped sol–gel zirconia

The rate the fluorescence decays can be modeled as a double exponential function of the irradiation time; the characteristic times involved in this quenching process are in the range of seconds.

出版机构:Springer US

刊物名称:Journal of Sol-Gel Science and Technology

出版时间:2007

ISSN:0928-0707

数据源:报刊文摘

Effect of Lumophore and Plasticiser Concentration on The Heterogeneity of Oxygen Quenching in Thin Film Oxygen Sensors

Kinetic heterogeneity of the luminescence decay and oxygen quenching of Pt and Pd octaethylporphyrin/ethyl cellulose (OEP/EC) thin film oxygen sensors has been investigated with respect to (a) concentration of lumophore and (b) addition of plasticiser.

出版机构:Springer US

刊物名称:Journal of Fluorescence

出版时间:2006

ISSN:1053-0509

数据源:报刊文摘

Influence of the Microstructure of Polymer Gels on the Electron-Excitation Energy Transfer Between Organic Molecules

The electron-excitation energy transfer (EEET) between ionic dyes in polyelectrolyte-network polymers with a different space distribution of charged segments has been investigated.

出版机构:Springer US

刊物名称:Journal of Applied Spectroscopy

出版时间:2005

ISSN:0021-9037

数据源:报刊文摘

Oxygen diffusion in poly(methyl methacrylate) at low temperatures

Oxygen diffusion in atactic poly(methyl methacrylate) has been studied by anthracene luminescence quenching in geminate pairs anthracene-oxygen at 77-130 K.

出版机构:Wiley Subscription Services, Inc., A Wiley Company

刊物名称:Journal of Polymer Science Part B: Polymer Physics

出版时间:1998

ISSN:0887-6266

数据源:报刊文摘

Flow injection fluorimetric determination of chromium(VI) in electroplating baths by luminescence quenching of tris(2,2′-bipyridyl) ruthenium(II)

ensitive and selective luminescence quenching method is developed and used for manual and flow injection analysis (FIA) of chromium(VI) by reaction with [Ru(bpy)3]2+. The emission peak of ruthenium(II) at 595nm is linearly decreased as a function of Cr(VI) concentration.

出版机构:Elsevier Science

刊物名称:Talanta

出版时间:2005

ISSN:0039-9140

数据源:报刊文摘