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Browsing by Subject "Luminescence"

Now showing items 1-20 of 21

Changes in cytochrome P450 gene expression and enzyme activity induced by xenobiotics in rabbits in vivo and in vitro

Palócz, Orsolya; Farkas, Orsolya; Clayton, Paul; Csikó, György (Universitat Politècnica de València, 2017-06-28)

[EN] As considerable inter-species differences exist in xenobiotic metabolism, developing new pharmaceutical therapies for use in different species is fraught with difficulties. For this reason, very few medicines have ...
FI on-line chemiluminescence reaction for determination of MCPA in water samples

Torres Cartas, Sagrario; Gómez Benito, Carmen; Meseguer-Lloret, Susana (Springer Verlag, 2012)

This paper reports an economic, simple, and rapid FI-CL method for the determination of MCPA. This method requires simple instrumentation and it is fast enough to be used in routine analyses. A chemiluminescence signal is ...
High-pressure study of ScVO4 by Raman scattering and ab initio calculations

Panchal, V.; Manjón Herrera, Francisco Javier; Errandonea, D.; Rodriguez-Hernandez, P.; López-Solano, J.; Muñoz, A.; Achary, S.N.; Tyagi, A.K. (American Physical Society, 2011-02-25)

We report results of experimental and theoretical lattice-dynamics studies on scandium orthovanadate up to 35 GPa. Raman-active modes of the low-pressure zircon phase are measured up to 8.2 GPa, where the onset of an ...
Investigation on the Luminescence Properties of InMO4 (M = V5+, Nb5+, Ta5+) Crystals Doped with Tb3+ or Yb3+ Rare Earths Ions

Botella, Pablo; Enrichi, Francesco; Vomiero, Alberto; Muñoz-Santiuste, Juan E.; Garg, Alka B.; Arvind, Ananthanarayanan; Manjón, Francisco-Javier; Segura, Alfredo; Errandonea, Daniel (American Chemical Society, 2020-02-11)

[EN] We explore the potential of Tb- and Yb-doped InVO4, InTaO4, and InNbO4 for applications as phosphors for light-emitting sources. Doping below 0.2% barely change the crystal structure and Raman spectrum but provide ...
Luminescence Dynamics of Silica-Encapsulated Quantum Dots During Optical Trapping

Rodríguez-Rodríguez, H.; Acebrón, M.; Juárez, B.H.; Arias-Gonzalez, J. R. (American Chemical Society, 2017-05-11)

[EN] The trade-off between photobrightening and photobleaching controls the emission stability of colloidal quantum dots. This balance is critical in optical trapping configurations, where irradiances that confine and ...
Luminescence Properties of CaAl2O4:Eu3+, Gd3+ Phosphors Synthesized by Combustion Synthesis Method

Verma, Naveen; Singh, K.C.; Marí, B.; Mollar García, Miguel Alfonso; Jindal, Jitender (Institute of Physics, Polish Academy of Sciences, 2017)

[EN] CaAl2O4:Eu3+ (1 mol.%) co-doped with varying concentration of Gd3+ (1, 2, 5, and 10 mol.%) were prepared by combustion synthesis method at 600 C and further annealed at 1000 ºC. All the compositions were investigated ...
Luminescence properties of the Eu2+ /Eu3 + activated Barium aluminate phosphors with varies Gd3+ concentration

Marí, B.; Singh, K.C.; Verma, Naveen; Mollar García, Miguel Alfonso; Jindal, Jitender (Taylor & Francis, 2015)

[EN] BaAl2O4:Eu2(+)/Eu3(+) (1mol %) co-doped with varying concentrations of Gd3(+) (1, 2, 5 and 10mol%) were prepared by combustion synthesis method at 600 degrees C. All the compositions were investigated for their ...
Multifunctional luminescent and proton-conducting lanthanide carboxyphosphonate open-framework hybrids exhibiting crystalline-to-amorphous- to-crystalline transformations

Colodrero, Rosario M. P.; Papathanasiou, Konstantinos E.; Stavgianoudaki, Nikoleta; Olivera-Pastor, Pascual; Losilla, Enrique R.; Aranda, Miguel A. G.; Leon-Reina, Laura; Sanz, Jesús; Sobrados, Isabel; Choquesillo-Lazarte, Duane; García-Ruiz, Juan M.; Atienzar Corvillo, Pedro Enrique; Rey Garcia, Fernando; Demadis, Konstantinos D.; Cabeza, Aurelio (American Chemical Society, 2012-09-15)

[EN] The chemistry of metal phosphonates has been progressing fast with the addition of new materials that possess novel structural features and new properties, occasionally in a cooperative manner. In this paper, we report ...
Photo-induced luminescence

Catalá Icardo, Mónica; Martínez Calatayud, J. M. (Taylor & Francis, 2008)

The present paper is a critical review dealing with the characteristics, reaction mechanisms and photoproducts, instrumentation and analytical applications of the photo-induced either chemiluminescence or fluorescence. ...
Photoinduced electron flow in a self-assembling supramolecular extension cable

Ferrer Ribera, Rosa Belén; Rogez, Guillaume; Credi, Alberto; Ballardini, Roberto; Gandolfi, Maria Teresa; Balzani, Vincenzo; Liu, Yi; Tseng, Hsian-Rong; Stoddart, J. Fraser (National Academy of Sciences, 2006-07-28)

We report the design, bottom-up construction, characterization, and operation of a supramolecular system capable of mimicking the function played by a macroscopic electrical extension cable. The system is made up of a ...
Photoinduced energy- and electron-transfer processes in dinuclear Ru II-OsII, RuII-OsIII, and Ru III-OsII trisbipyridine complexes containing a shape-persistent macrocyclic spacer

Venturi, Margherita; Marchioni, Filippo; Ferrer Ribera, Rosa Belén; Balzani, Vincenzo; Opris, Dorina M.; Schlüter, A. Dieter (Wiley-VCH Verlag, 2006-01-11)

The PF6 - salt of the dinuclear [(bpy) 2Ru(1)Os(bpy)2]4+ complex, where 1 is a phenylacetylene macrocycle which incorporates two 2,2′-bipyridine (bpy) chelating units in opposite sites of its shape-persistent structure, ...
PLAN DE NEGOCIO PARA UNA EMPRESA DE FABRICACION DE LUCES LED EN EL PAÍS VASCO

Cid Pereda, Regina (Universitat Politècnica de València, 2019-07-23)

[ES] En el presente TFG se describe el proceso de crear una empresa que se encargue de la fabricación de luces led. Para ello se estudiará la situación actual del sector en el ámbito español y a su vez un análisis de ...
Porous Silicon for Photosensitized Formation of Singlet Oxygen in Water and in Simulated Body Fluid: Two Methods of Modification by Undecylenic Acid

Pastor Galiano, Ester Lorena; Balaguer Ramírez, María; Bychto, Leszek Andrzej; Salonen, Jarno; Lehto, Vesa-Pekka; Matveyeva, Eugenia; Chyrvony, Uladzimir (American Scientific Publishers, 2009-06)

Initially H-terminated and therefore hydrophobic surface of electrochemically repared luminescent porous silicon (PSi) powder was transformed to the hydrophilic one by means of surface modification by undecylenic acid. ...
Preparation and luminescence properties of MZrO3:Eu3+, A+ (M=Ca2+ or Ba2+ and A=Li+ or Na+ or K+ ) phosphors with perovskite structure

Marí Soucase, Bernabé; Cembrero Coca, Paula; Singh, K.C.; Kaushik, R.D.; Om, Hari (Elsevier, 2013)

[EN] Calcium and barium zirconate powders based upon CaZrO3:Eu3 +,A and BaZrO3:Eu3 +,A (A=Li+ , Na+, K+) were prepared by combustion synthesis method and heating to ~1000 °C to improve crystallinity. The structure and ...
Sensores fotoluminiscentes de presión y temperatura

Marí Guaita, Julia (Universitat Politècnica de València, 2019-11-26)

[EN] This work deals with studying the material Yb:Gd2O3 (11% Yb) under pressure using a diamond anvil cell (DAC) and the Raman spectroscopy technique. This technique will allow us to understand the fundamentals of atomic ...
Síntesis y caracterización de nanocristales de perovskita híbridas mediante ablación láser

Rando Brotons, Manuel (Universitat Politècnica de València, 2019-01-23)

Las nanopartículas de perovskita de haluro de plomo han cobrado gran importancia en los últimos años, debido a sus propiedades ópticas, bajo coste que ha permitido su aplicación en la preparación de dispositivos ...
Synthesis of Sr(1-x-y)Al4O7:Eux2+, Lny3+ (Ln= Dy, Y, Pr) Nanophosphors Using Rapid Gel Combustion Process and Their Down Conversion Characteristics

Singh, Devender; Tanwar, Vijeta; Samantilleke, Anura Priyajith; Marí, B.; Bhagwan, Shri; Singh, Krishan Chander; Kadyan, Pratap Singh; Singh, Ishwar (Springer-Verlag, 2017)

[EN] Eu2+ and Eu2++Ln3+ doped SrAl4O7 nanophosphors were synthesized by rapid gel combustion process. The morphology of prepared phosphors was examined with scanning and transmission electron microscopy. The phase ...
The effect of high-In content capping layers on low-density bimodal-sized InAs quantum dots

Trevisi, G.; Suárez, I.; Seravalli, L.; Rivas, D.; Frigeri, P.; Muñoz Matutano, Guillermo; Grillo, V.; Nasi, L.; Martínez-Pastor, J. (American Institute of Physics (AIP), 2013-05-21)

[EN] The structural and morphological features of bimodal-sized InAs/(In) GaAs quantum dots with density in the low 10(9) cm(-2) range were analyzed with transmission electron microscopy and atomic force microscopy and ...
Tuneable Emission of Polyhedral Oligomeric Silsesquioxane Based Nanostructures that Self-Assemble in the Presence of Europium(III) Ions: Reversible trans-to-cis Isomerization

Cinà, Valerio; Carbonell, Esther; Fusaro, Luca; García Gómez, Hermenegildo; Gruttadauria, Michelangelo; Giacalone, Francesco; Aprile, Carmela (John Wiley & Sons, 2020-03)

[EN] Hybrid nanostructures with switchable and reversible "blue-red-green" emission were efficiently synthesized. These nanostructures comprise polyhedral oligomeric silsesquioxanes (POSS) that behave as a nanocage that ...
UV-Vis Luminescence imaging techniques/ Técnicas de imagen de luminiscencia UV-Vis

Fuster-López, Laura; Stols-Witlox, Maartje; Picollo, Marcello (Editorial Universitat Politècnica de València, 2020-03-04)

Ever since its first introduction in the field of conservation, the role of UV-VIS luminescence/fluores-cence (UVL and UVf, respectively) imaging has been expanding.The unique and significant contribution of this technique ...