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Browsing by Subject "Fluorescence"

Now showing items 1-20 of 66

2,4-dinitrophenyl ether-containing chemodosimeters for the selective and sensitive 'in vitro' and 'in vivo' detection of hydrogen sulfide

El Sayed Shehata Nasr, Sameh; De La Torre, C,; Santos Figueroa, Luis E.; Martínez-Máñez, Ramón; Sancenón Galarza, Félix; Orzáez, M.; Costero, Ana M.; Parra, Margarita; Gil, Salvador (Taylor & Francis, 2015)

[EN] Four probes (i.e. D1¿D4) for the selective and sensitive fluorogenic detection of HS2 have been prepared and characterised. HEPES (10 mM, pH 7.4)¿DMSO 99:1 v/v solutions of D1¿D4 are essentially non-fluorescent. ...
5,5 '-Bis-vanillin derivatives as discriminating sensors for trivalent cations

Costero Nieto, Ana María; Gil Grau, Salvador; Parra Álvarez, Margarita; Mancini, Pedro Maximo Emilio; Kneeteman, Maria N.; Quindt, Matias I. (Elsevier, 2015-06-24)

[EN] Several bis-vanillin derivatives containing semicarbazone moieties have been prepared and used in discriminating trivalent cations. The prepared probes are readily obtained and they are usually highly crystalline. ...
A Boron Dipyrromethene (BODIPY)-Based Cu-II-Bipyridine Complex for Highly Selective NO Detection

Juárez, Luis A.; Barba Bon, Andrea; Costero Nieto, Ana María; Martínez Mañez, Ramón; Sancenón Galarza, Félix; Parra Álvarez, Margarita; Gaviña Costero, Pablo; Terencio Silvestre, María Carmen; Alcaraz Tormo, María José (2015)

[EN] A BODIPY-containing Cu-II-bipyridine complex for the simple selective fluorogenic detection of NO in air and in live cells is reported. The detection mechanism is based on NO-promoted Cu-II to Cu-I reduction, followed ...
A combined photophysical and computational study on the binding of mycophenolate mofetil and its major metabolite to transport proteins

Vendrell-Criado, Victoria; González-Bello, Concepción; Miranda Alonso, Miguel Ángel; Jiménez Molero, María Consuelo (Elsevier, 2018-06-15)

[EN] Binding of the inmunodrepresive agent mycophenolate mofetil (MMP) and its pharmacologically active metabolite mycophenolic acid (MPA) to human serum albumin (HSA) and ¿1-acid glycoprotein (HAAG) has been investigated ...
A mechanistic study on photocatalysis by thiapyrylium salts. Photodegradationof dimethoate, alachlor and pyrimethanil under simulated sunlight

Gomis Vicens, Juan; Arques Sanz, Antonio; Amat Payá, Ana María; Marín García, Mª Luisa; Miranda Alonso, Miguel Ángel (Elsevier, 2012-07-23)

Photodegradation of dimethoate, alachlor, and pyrimethanil using a thiapyrilium salt (TPTP+) as photocatalyst was performed under simulated sunlight. The photocatalyst removes preferentially pyrimethanil (45% after 60 min ...
A New Highly Selective Chromogenic and Fluorogenic Chemosensor for Copper (II)

Quindt, M. I.; Gutiérrez, Leandro G.; Kneeteman, M. N.; Mancini, P.M.E.; Parra Alvarez, Margarita; Gil Grau, Salvador; Costero, Ana M. (Bentham Science, 2018)

[EN] A new fluorogenic and chromogenic probe (L) for the selective, sensitive and naked-eye detection of Cu2+ is reported. Complexation constant, complex stoichiometry and quantum chemical (DFT) calculation for Cu2+ complex ...
A new phenanthrene-based bis-oxime chemosensor for Fe(III) and Cr(III) discrimination

Bravo, Virginia; Gil Grau, Salvador; Costero Nieto, Ana María; Kneeteman, Maria N.; Llaosa, Úrsula; Mancini, Pedro Maximo Emilio; Ochando Gómez, Luis Enrique; Parra Álvarez, Margarita (Elsevier, 2012-06-17)

[EN] The synthesis of two new 2,7-disubstituted phenanthrene-based bis oximes is described. The ability of these two compound for complexing heavy metal cations have been studied and complexation constants and complex ...
A Simple System Based on a Thiourea-Modified Fluorescein for w-Amino Acid Discrimination

Marti, A.; Costero Nieto, Ana María; Gaviña, P.; Parra Álvarez, Margarita (Wiley-VCH Verlag, 2015-09-22)

A thiourea-modified fluorescein derivative was synthesized by reaction of fluorescein isothiocyanate with 2-(2-aminoethoxy)ethan-1-ol. UV/Vis absorption and fluorescence emission spectroscopy studies demonstrated that this ...
Analysis of the upconversion emission of yttrium orthoaluminate nanoperovskite co-doped with Er3+/Yb3+ ions for thermal sensing applications

Hernández-Rodríguez, M.A.; Lozano-Gorrín, A.D.; Lavin, V.; Rodriguez-Mendoza, U.R.; Martin, I.R.; Manjón, Francisco-Javier (Elsevier, 2018-10)

[EN] The upconversion emissions of yttrium orthoaluminate nano-perovskite co-doped with Er3+/Yb3+ have been studied. Strong green and red upconversion emissions, which can be observed by naked eyes, were observed when ...
Anchoring of Diphenylphosphinyl Groups to NH2-MIL-53 by Post-Synthetic Modification

Castellanos, Sonia; Sai Sankar Gupta, Karthick Babu; Pustovarenko, Alexey; Dikhtiarenko, Alla; Nasalevich, Maxim; Atienzar Corvillo, Pedro Enrique; García Gómez, Hermenegildo; Gascon, Jorge; Kapteijn, Freek (Wiley-VCH Verlag, 2015-10)

Incorporation of new functionalities into metal-organic frameworks (MOFs) by post-synthetic modification is a most attractive strategy for attaining the desired properties without risking destruction of the crystalline ...
Aplicación de técnicas de iluminación y procesado de imagen para la detección y medición de lesiones

Moncho Santonja, María (Universitat Politècnica de València, 2023-01-02)

[ES] En el presente trabajo se realiza un análisis completo de las técnicas de iluminación y registro de imagen desarrollados hasta el momento y que permiten emplear la fluorescencia intrínseca de estructuras biológicas ...
Arylisoquinoline-derived organoboron dyes with a triaryl skeleton show dual fluorescence

Pais, Vania F.; Neumann, T.; Vayá Pérez, Ignacio; Jiménez Molero, María Consuelo; Ros, Abel; Pischel, Uwe (Beilstein-Institut, 2019-11-04)

[EN] Four new dyes that derive from borylated arylisoquinolines were prepared, containing a third aryl residue (naphthyl, 4-methoxynaphthyl, pyrenyl or anthryl) that is linked via an additional stereogenic axis. The triaryl ...
Assessment of drug entrapment within liposomes using photophysical probes

Oliverio, Filomena; Nuin Plá, Neus Edurne; Andreu Ros, María Inmaculada; Ragno, Gaetano; Miranda Alonso, Miguel Ángel (Elsevier, 2014-10)

The photophysical and photochemical behavior of (R)-cinacalcet (CIN) and (S)-naproxen (NPX) entrapped within liposomes has been studied. For this purpose, liposome encapsulated drugs have been prepared through thin layer ...
Azide and sulfonylazide functionalized fluorophores for the selective and sensitive detection of hydrogen sulfide

El Sayed Shehata Nasr, Sameh; De la Torre Paredes, Cristina; Santos Figueroa, Luis Enrique; Marín Hernández, Cristina; Martínez Mañez, Ramón; Sancenón Galarza, Félix; Costero Nieto, Ana María; Gil, Salvador; Parra, Margarita (Elsevier, 2015-02)

[EN] Three fluorescent probes (1–3) for the selective and sensitive detection of hydrogen sulfide have been synthesized and characterized. Probe 1 is a coumarin derivative functionalized with an azide moiety whereas 2 ...
Biophysical characterization of the HIV-1 Pol polyprotein and virtual screening for identification of binders

Vega Sarabia, Alejandra (Universitat Politècnica de València, 2022-07-18)

[ES] El VIH-1 es un virus perteneciente a la familia de los retrovirus, ya que los de su familia tienen ARN como material genético, sin embargo para infectar las células humanas deben tener mecanismos que permitan la ...
Caracterización espectroscópica, a través de técnicas de absorción y emisión, de la interacción fotoinducida entre N-óxidos heterocíclicos y proteínas

Cerdán Flores, Claudia (Universitat Politècnica de València, 2020-01-07)

[ES] Los N-óxidos heterocíclicos (NO) son compuestos aromáticos cuyo heteroátomo es el nitrógeno al que está unido un oxígeno a través de un enlace sencillo. Los NO han demostrado una amplia versatilidad como agentes ...
Carotenoids in dehydrated persimmon: Antioxidant activity, structure, and photoluminescence

Martínez González, Cristina; López-García, Adrián; Llorca Martínez, Mª Empar; Hernando Hernando, Mª Isabel; Atienzar Corvillo, Pedro Enrique; Bermejo-Del Castillo, Almudena; Moraga Ballesteros, Gemma; Quiles Chuliá, Mª Desamparados (Elsevier, 2021-05)

[EN] In this study, the effect of two hot air drying conditions (40 degrees C for 23 h and 60 degrees C for 9 h) on the content, antioxidant activity, microstructure, and luminescence properties of persimmon carotenoids ...
Characterization of Locally Excited and Charge-Transfer States of the Anticancer Drug Lapatinib by Ultrafast Spectroscopy and Computational Studies

Vayá Pérez, Ignacio; Andreu Ros, María Inmaculada; Lence, Emilio; González-Bello, Concepción; Cuquerella Alabort, Maria Consuelo; Navarrete-Miguel, Miriam; Roca-Sanjuán, Daniel; Miranda Alonso, Miguel Ángel (John Wiley & Sons, 2020-12-04)

[EN] Lapatinib (LAP) is an anticancer drug, which is metabolized to theN- and O-dealkylated products (N-LAP andO-LAP, respectively). In view of the photosensitizing potential of related drugs, a complete experimental and ...
Dansyl derivatives of cholic acid as tools to build speciation diagrams for sodium chotale aggregation

Gómez Mendoza, Miguel; Marín García, Mª Luisa; Miranda Alonso, Miguel Ángel (American Chemical Society, 2011-03-15)

Three ¿uorescent cholic acid derivatives incorporating the dansyl chromophore at positions 3R, 3ß, and 7Rhave been successfully employed to build the speciation diagram of sodium cholate by means of steady-state and ...
Dansyl labeling to modulate the relative affinity of bile acids for the binding sites of human serum albumin

Rohacova, Jana; Sastre Navarro, German Ignacio; Marín García, Mª Luisa; Miranda Alonso, Miguel Ángel (American Chemical Society, 2011-09-08)

[EN] Binding of natural bile acids to human serum albumin (HSA) is an important step in enterohepatic circulation and provides a measure of liver function. In this article, we report on the use of four dansyl (Dns) derivatives ...