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Listar por palabra clave "Laser flash photolysis"

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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 mechanistic study on the oxidative photodegradation of 2,6-dichlorodiphenylamine-derived drugs: Photo-Fenton versus photocatalysis with a triphenylpyrylium salt

Miró Richart, Paula; Arques Sanz, Antonio; Amat Payá, Ana María; Marín García, Mª Luisa; Miranda Alonso, Miguel Ángel (Elsevier, 2013-08)

Emerging pollutants, such as drugs, are considered a potential hazard to the environment, and therefore advanced oxidation processes are being considered candidate tools for their elimination. Here, different oxidation ...
A mechanistic study on the potential of quinolinium salts as photocatalysts for the abatement of chlorinated pollutants

Martínez-Haya, Rebeca; Sabater Marco, Consuelo; Castillo López, María-Ángeles; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2018-06)

[EN] Photocatalytic degradation of three highly chlorinated contaminants, namely 2,4,6-trichlorophenol (TCP), 2,4,6-trichloroanisole (TCA) and 5-chloro-2-(2,4-dichlorophenoxy)phenol (triclosan, TCS) has been investigated ...
A photophysical approach to investigate the photooxidation mechanism of pesticides: Hydroxyl radical versus electron transfer

Marín García, Mª Luisa; Lhiaubet, Virginie Lyria; Santos-Juanes Jordá, Lucas; Soler Escoda, Juan Miguel; Gomis Vicens, Juan; Arques Sanz, Antonio; Amat Payá, Ana María; Miranda Alonso, Miguel Ángel (Elsevier, 2011-03-14)

[EN] The role of hydroxyl radical in different solar photocatalytic processes, namely photo-Fenton, titanium dioxide-based oxidation and organic photocatalysis (triphenylpyrylium) has been investigated. Using a methodology ...
A Time-Resolved Study on the Reactivity of Alcoholic Drinks with the Hydroxyl Radical

Rodriguez-Muniz, Gemma M.; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (MDPI AG, 2019-01-02)

[EN] Reactive oxygen species (ROS) can provoke damage to cells, where their concentrations are regulated by antioxidants. As the hydroxyl radical (center dot OH) is the most oxidizing ROS, we have focused our attention on ...
Analysis of mebendazole binding to its target biomolecule by laser flash photolysis

Jornet Olivé, Mª Dolors; Bosca Mayans, Francisco; Andreu, Jose Maria; Domingo, L.R.; Tormos Faus, Rosa Esperanza; Miranda Alonso, Miguel Ángel (Elsevier, 2016-02)

[EN] Mebendazole (MBZ) and related anticancer benzimidazoles act binding the beta-subunit of Tubulin (TU) before dimerization with alpha-TU with subsequent blocking microtubule formation. Laser flash photolysis (LFP) is a ...
Assessing physical properties of amphoteric fluoroquinolones using phosphorescence spectroscopy

Soldevila Serrano, Sonia; Bosca Mayans, Francisco (Elsevier, 2020-02-15)

[EN] The self-association of fluoroquinolones (FQ) in water would play a relevant role in their translocations across lipid membranes. Triplet excited states of these drugs have been shown as reporters of FQ self-association ...
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 ...
Chemical tuning for potential antitumor fluoroquinolones

Anaya-González, Cristina; Soldevila Serrano, Sonia; García-Laínez, Guillermo; Bosca Mayans, Francisco; Andreu Ros, María Inmaculada (Elsevier, 2019-09)

[EN] Phototoxic effects of 6,8 dihalogenated quinolones confers to this type of molecules a potential property as photochemotherapeutic agents. Two photodehalogenation processes seem to be involved in the remarkable ...
Direct detection of the triphenylpyrylium-derived short-lived intermediates in the photocatalyzed degradation of acetaminophen, acetamiprid, caffeine and carbamazepine

Martínez-Haya, Rebeca; Gomis Vicens, Juan; Arqués Sanz, Antonio; Amat Payá, Ana María; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2018-08-15)

[EN] Advanced oxidation processes are useful methodologies to accomplish abatement of contaminants; however, elucidation of the reaction mechanisms is hampered by the difficult detection of the short-lived primary key ...
Diseño de nanorods de oro con fármacos fotoactivos para estudios de citotoxicidad celular

Palomares Ferrando, Adrià (Universitat Politècnica de València, 2021-10-06)

[ES] Este proyecto se ha centrado en el diseño y estudio de las propiedades de nanorods de oro para su posible aplicación en terapia fototérmica (PTT), para el tratamiento de ciertos tipos de cánceres. La terapia fototérmica ...
El papel de los metabolitos en la fototoxicidad de filtros solares

Garcia Castellanos, Marina (Universitat Politècnica de València, 2023-09-25)

[ES] El uso de los filtros ultravioleta (UV) se ha extendido en la actualidad para millones de personas. Sin embargo, algunos de ellos no son biodegradables en su totalidad y las plantas de tratamiento de aguas residuales ...
Enhanced photo(geno)toxicity of demethylated chlorpromazine metabolites

Palumbo, Fabrizio; García Lainez, Guillermo; Limones Herrero, Daniel; Coloma, María Dolores; Escobar, Javier; Jiménez Molero, María Consuelo; Miranda Alonso, Miguel Ángel; Andreu Ros, María Inmaculada (Elsevier, 2016)

Chlorpromazine (CPZ) is an anti-psychotic drug widely used to treat disorders such as schizophrenia or manic-depression. Unfortunately, CPZ exhibits undesirable side effects such as phototoxic and photoallergic reactions ...
Enhancement of the catalytic activity of supported gold nanoparticles for the fenton reaction by light

Navalón Oltra, Sergio; De Miguel de la Torre, Maykel; Martín González, Roberto; Alvaro Rodríguez, Maria Mercedes; García Gómez, Hermenegildo (American Chemical Society, 2011)

[EN] Laser flash photolysis of supported gold nanopar-ticles exciting at the surface plasmon band (532 nm) has allowed in the case of Au/CeO 2 and Au/OH-npD (OH-npD: Fenton-treated diamond nanoparticles) detection of ...
Estudio de la fotorreactividad de sistemas naproxeno-amino ácido en espacios confinados

Verdasco Vivancos, Antonio (Universitat Politècnica de València, 2020-05-05)

[ES] En este trabajo se han estudiado las propiedades fotofísicas del antiinflamatorio no esteroideo naproxeno en diferentes entornos cuyo grado de complejidad va aumentando progresivamente. Los diferentes modelos diseñados ...
Estudio fotofisico y fotoquímico de diadas flurbiprofeno-triptófano como modelos sencillos de sistemas fármaco-proteína

García Gabarda, Laura (Universitat Politècnica de València, 2022-10-27)

[ES] En este trabajo de fin de grado se ha sintetizado una serie de sistemas bicromofóricos (o diadas) compuestos por el flurbiprofeno (FBP), un fármaco antiinflamatorio utilizado para el tratamiento de diversas dolencias, ...
Evaluación del potencial fotoquímico y fotobiológico de los inhibidores de la poli (ADP-ribosa) polimerasa

Mateos Pujante, Alejandro (Universitat Politècnica de València, 2023-09-07)

[ES] En la presente tesis doctoral se ha desarrollado una metodología multidisciplinar para la evaluación del potencial fotoquímico y fotobiológico in vitro de los fármacos inhibidores de la poli (ADP-ribosa) polimerasa ...
Fotorreactividad de gefitinib y sus metabolitos fenólicos en disolución y en proteínas transportadoras.

Tamarit Mayo, Lorena (Universitat Politècnica de València, 2024-05-13)

[ES] Los inhibidores de la tirosina quinasa (TKIs) son fármacos anticancerígenos que actúan atacando selectivamente a las células cancerosas, inhibiendo su crecimiento descontrolado y, por tanto, la consiguiente aparición ...
Generation of the Thymine Triplet State by Through-Bond Energy Transfer

Miró, Paula; Gomez-Mendoza, Miguel; SASTRE NAVARRO, GERMAN IGNACIO; Cuquerella Alabort, Maria Consuelo; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (John Wiley & Sons, 2019-05-17)

[EN] Benzophenone (BP) and drugs containing the BP chromophore, such as the non-steroidal anti-inflammatory drug ketoprofen, have been widely reported as DNA photo-sensitizers through triplet-triplet energy transfer (TTET). ...
Hydrogen Abstraction from the C15 Position of the Cholesterol Skeleton

Palumbo, Fabrizio; Andreu Ros, María Inmaculada; Brunetti, M.; Schmallegger, Max; Gescheidt, Georg; Neshchadin, Dmytro; Miranda Alonso, Miguel Ángel (American Chemical Society, 2019-12-06)

[EN] Cholesterol (Ch) is an integral part of cell membrane, where it is prone to oxidation. In humans, oxidation of Ch is commonly linked to various pathologies like Alzheimer's disease, atherosclerosis, and even cancer, ...