Buscar en RiuNet

Listar

Todo RiuNet

Mi cuenta

Acceder

Ayuda RiuNet

Admin. UPV

Listar por palabra clave "Electron transfer"

Mostrando ítems 1-20 de 25

Página siguiente

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 ...
Biomimetic photooxidation of noscapine sensitized by a riboflavin derivative in water: The combined role of natural dyes and solar light in environmental remediation

Pavanello, Alice; Fabbri, Debora; Calza, Paola; Battiston, Debora; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2022-04)

[EN] Noscapine (NSC) is a benzyl-isoquinoline alkaloid discovered in 1930 as an antitussive agent. Recently, NSC has also been reported to exhibit antitumor activity and, according to computational studies, it is able to ...
Configuration-dependent photoinduced electron transfer in diastereomeric naphthalene-amino-naphthalene triads

Nuin Pla, Neus Edurne; Sastre Navarro, German Ignacio; Pischel, Uwe; Andreu Ros, María Inmaculada; Miranda Alonso, Miguel Ángel (John Wiley & Sons, 2015)

[EN] Novel diastereomeric triads containing two naphthalene chromophores have been designed in which an electron-donating amine moiety is covalently integrated into the connecting bridge. Photophysical studies (steady-state ...
Diastereodifferentiation of novel naphthalene dyads by fluorescence quenching and excimer formation

Abad Fuentes, Sergio; Vayá Pérez, Ignacio; Jiménez Molero, María Consuelo; Pischel ., Uwe; Miranda Alonso, Miguel Ángel (John Wiley & Sons, 2006)

[EN] Four new bichromophoric naphthalene dyads in form of diastereomeric pairs are synthesized and photophysically characterized. For a closely related group of compounds (NAP-NAP MNAP-NAP, MNAP-MNAP), systematic variation ...
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 ...
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 ...
Experimental and Theoretical Study on the Cycloreversion of a Nucleobase-Derived Azetidine by Photoinduced Electron Transfer

Fraga-Timiraos, Ana Belén; Francés-Monerris, Antonio; Rodríguez Muñiz, Gemma María; Navarrete-Miguel, Miriam; Miranda Alonso, Miguel Ángel; Roca Sanjuan, Daniel; Lhiaubet, Virginie Lyria (John Wiley & Sons, 2018-10-12)

[EN] Azetidines are interesting compounds in medicine and chemistry as bioactive scaffolds and synthetic intermediates. However, photochemical processes involved in the generation and fate of azetidine-derived radical ions ...
Metal-Free Photocatalytic Reductive Dehalogenation Using Visible-Light: A Time-Resolved Mechanistic Study

Martínez-Haya, Rebeca; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (John Wiley & Sons, 2017)

[EN] The reductive dehalogenation of organic bromides has been achieved in the presence of riboflavin (RF) as photocatalyst under visible-light irradiation. Specifically, benzyl bromide (2) and -bromoacetophenone (3) were ...
Modulation by Phosphonium Ions of the Activity of Mitotropic Agents Based on the Chemiluminescence of Luminols

Rodríguez Muñiz, Gemma María; Mikroulis, Theodoros; Pantelia, Anna; Rotas, Georgios; Cuquerella Alabort, Maria Consuelo; Vougioukalakis, Georgios C.; Miranda Alonso, Miguel Ángel (MDPI AG, 2022-02)

[EN] Mitochondria-targeting drugs and diagnostics are used in the monitoring and treatment of mitochondrial pathologies. In this respect, a great number of functional compounds have been made mitotropic by covalently ...
Molecular Oxygen as a Redox Catalyst in IntramolecularPhotocycloadditions of Coumarins

Kranz, Darius Paul; Griesbeck, Axel Georg; Alle, Ronald; Pérez Ruiz, Raul; Neudörfl, Jörg Martin; Meerholz, Klaus; Schmalz, Hans-Günther (Wiley-VCH Verlag, 2012)

Oxygen as a catalyst! While oxygen is usually excluded in nonoxidative photochemical reactions, the photocycloaddition of 3-(alk-4-en-1-yl)-substituted coumarins greatly benefits from the presence of O 2, which was shown ...
Novel Mechanistic Insights on the Photoredox Degradation of CECs Using Organic Photocatalysts

Pavanello, Alice (Universitat Politècnica de València, 2022-12-30)

[ES] La demanda de agua y la contaminación del agua son dos problemas ligados no solo de los últimos años sino también para el futuro. Mucho se ha hecho en el pasado para eliminar los contaminantes emergentes (CEC) de los ...
Photocatalytic degradation of drugs in water mediated by acetylated riboflavin and visible light: A mechanistic study

Pavanello, Alice; Fabbri, Debora; Calza, Paola; Battiston, Debora; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2021-08)

[EN] There is a current concern, among the scientific community, on the pollutants classified as "persistent organic pollutants (POPs)". Pharmaceuticals and personal care products (PPCPs) belong to this family of contaminants; ...
Photocatalytic degradation of phenolic pollutants using N-methylquinolinium and 9-mesityl-10-methylacridinium salts

Martínez-Haya, Rebeca; Luna, M. M.; Hijarro, A.; Martinez-Valero, E.; Miranda Alonso, Miguel Ángel; Marín García, Mª Luisa (Elsevier, 2019-05-15)

[EN] The photodegradation of a mixture of phenolic pollutants including: phenol (P), orto-phenylphenol (OPP), 2,4,6-trichlorophenol (TCP) and pentachlorophenol (PCP) was accomplished using two organic cationic photocatalysts, ...
Photochemical Evidence of Electronic Interwall Communication in Double-Wall Carbon Nanotubes

Vizuete, María; Gómez-Escalonilla, María J.; García-Rodríguez, Sergio; García Fierro, José Luis; Atienzar Corvillo, Pedro Enrique; García Gómez, Hermenegildo; Langa, Fernando (Wiley-VCH Verlag, 2012-12-21)

Single- and double-wall carbon nanotubes (CNTs) having dimethylanilino (DMA) units covalently attached to the external graphene wall have been prepared by the reaction of the dimethylaminophenylnitronium ion with the ...
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, ...
Photoreactivity of new rose bengal-SiO2 heterogeneous photocatalysts with and without a magnetite core for drug degradation and disinfection

Flores, Jenny; Moya Sanz, Mª Del Pilar; Bosca Mayans, Francisco; Marín García, Mª Luisa (Elsevier, 2023-03-15)

[EN] The main drawback of homogeneous photocatalysis is the difficult separation of the photocatalysts from the reaction media after treatment completion; thus, heterogeneous photocatalysis represents a step forward in ...
Role of association in chiral catalysis: from asymmetric synthesis to spin selectivity

Ageeva, A.A.; Khramtsova, E.A.; Magin, I.M.; Purtov, P.A.; Miranda Alonso, Miguel Ángel; Leshina, T.V. (John Wiley & Sons, 2018-12-12)

[EN] The origin of biomolecules in the pre-biological period is still a matter of debate, as is the unclarified nature of the differences in enantiomer properties, especially for the medically important activity of chiral ...
Spin Selectivity in Chiral Linked Systems

Ageeva, A.A.; Khramtsova, E.A.; Magin, I.M.; Richkov, D.A.; Purtov, P.A.; Miranda Alonso, Miguel Ángel; Leshina, T.V. (John Wiley & Sons, 2018-03-12)

[EN] This work has shown spin selectivity in electron transfer (ET) of diastereomers of (R,S)-naproxen-(S)-N-methylpyrrolidine and (R,S)-naproxen-(S)-tryptophan dyads. Photoinduced ET in these dyads is interesting because ...