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Articles by Jacinto Sa
Plasmonic Hot‐Carrier Redox Enables Proton‐Coupled Electron Transfer at C─H Bonds
Proton-coupled electron transfer (PCET) underlies many of nature's most demanding redox processes and has emerged as a central principle in synthetic catalysis, enabling the activation of strong and otherwise inert X─H bonds (X = N, O, C) under mild conditions.[1-3] By coupling electron and proton motion, PCET lowers activation barriers and avoids high-energy ionic intermediates, thereby imparting control and selectivity in transformations ranging from enzymatic reactions to photoredox...
Plasmonic Hot‐Carrier Redox Enables Proton‐Coupled Electron Transfer at C─H Bonds
Proton-coupled electron transfer (PCET) underlies many of nature's most demanding redox processes and has emerged as a central principle in synthetic catalysis, enabling the activation of strong and otherwise inert X─H bonds (X = N, O, C) under mild conditions.[1-3] By coupling electron and proton motion, PCET lowers activation barriers and avoids high-energy ionic intermediates, thereby imparting control and selectivity in transformations ranging from enzymatic reactions to photoredox...
Plasmon mediated photo-redox catalysis : From fundamentals to reactions
Nyckelord: NATURVETENSKAP; NATURAL SCIENCES; Localized surface plasmon; photocatalysis; hot carrier generation; carrier injection; transient absorption spectroscopy.; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi; Sammanfattning: The synthesis of most chemicals relevant to industrial processes requires at least one catalytic step.
Photochemical generation of divalent lanthanides : Applications in organic synthesis and small molecule activation
Nyckelord: NATURVETENSKAP; NATURAL SCIENCES; lanthanide; photoinduced electron transfer; chromophore; photocatalysis; Kemi med inriktning mot organisk kemi; Chemistry with specialization in Organic Chemistry; Sammanfattning: Trivalent lanthanide (Ln(III)) compounds are known for their luminescent properties. Luminescence sensitization often happens via the so-called "antenna effect": a light-harvesting chromophore which transfers its excitation energy to Ln(III) ions.
Shedding Light on Nitrate-to-Ammonia Conversion : Plasmonic catalysis for fertilizer synthesis and beyond
Nyckelord: NATURVETENSKAP; NATURAL SCIENCES; plasmon; catalysis; photocatalysis; ammonia; electrochemistry; spectroscopy; fertilizer; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi; Sammanfattning: There is a pressing need to find new and decentralized ways to produce ammonia.
Accumulative Charge Separation in Photocatalysis : From Molecules to Nanoparticles
Nyckelord: NATURAL SCIENCES; NATURVETENSKAP; Accumulative charge separation; Electron transfer; Plasmon dynamics; Time-resolved spectroscopy; Photocatalysis.; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi; Sammanfattning: Photochemical energy conversion into solar fuel involves steps of light absorption, charge separation and catalysis.
Photoelectrocatalytic Conversion of Nitrates to Ammonia: Effect of Proton Donor
Introduction According to information provided by the European Environment Agency,1 there has been a discernible enhancement in nitrate conditions in European surface waters in recent decades. On average, the concentration of nitrates in water basins has experienced a decrease. In recent years, there has been a stabilization in concentration levels, especially in rivers. Nevertheless, it is crucial to emphasize that there has not been a uniform reduction in nitrate concentration in water worldwide.
Two Years of PhysChem: Current Status and Future Developments
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Effect of Synthesis Method on Reaction Mechanism for Hydrogen Evolution over CuxOy/TiO2 Photocatalysts: A Kinetic Analysis
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Selective photocatalytic oxidation of 3-pyridinemethanol on platinized acid/base modified TiO2
Selective photocatalytic oxidation of 3-pyridinemethanol on platinized acid/base modified TiO2 TiO2 catalysts, modified with acidic or alkaline solutions and then platinized, were used for the partial photocatalytic oxidation of 3-pyridinemethanol to 3-pyridinemethanal and vitamin B3 in environmentally friendly conditions. The reaction took place in water under UVA light and air oxygen.
Reduction Mechanisms of Anticancer Osmium(VI) Complexes Revealed by Atomic Telemetry and Theoretical Calculations
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Laboratory-based double X-ray spectrometer for simultaneous X-ray emission and X-ray absorption studies
Laboratory-based double X-ray spectrometer for simultaneous X-ray emission and X-ray absorption studies X-ray spectroscopy studies are usually performed on synchrotron radiation sources, which offer bright, coherent, energy-tuneable and monochromatic light. However, the application of synchrotron-based X-ray emission spectroscopy (XES) and X-ray absorption spectroscopy (XAS) is directly constrained by the limited, infrequent access to the central facilities.
Morpholine-based buffers activate aerobic photobiocatalysis via spin correlated ion pair formation
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Correction: Controlling dark catalysis with quasi half-cycle terahertz pulses
* Corresponding authors a Department of Chemistry-Ångström Laboratory, Uppsala University, 75120 Uppsala, Sweden E-mail: jacinto.sa@kemi.uu.se b Institute of Physical Chemistry-Polish Academy of Sciences, 01-224 Warsaw, Poland c Institute of Physics, Jan Kochanowski University in Kielce, Świętokrzyska 15 St, 25-406 Kielce, Poland E-mail: jakub.szlachetko@ujk.edu.pl
Formal water oxidation turnover frequencies from MIL-101(Cr) supported Ru(bda) depend on oxidant concentration
THE MOLECULAR WATER OXIDATION CATALYST [RU(BDA)(L)2] HAS BEEN INCORPORATED INTO PYRIDINE-DECORATED MIL-101(CR) METAL ORGANIC FRAMEWORKS. THE RESULTING MIL-101@RU MATERIALS EXHIBIT TURNOVER FREQUENCIES (TOFS) UP TO TEN TIMES HIGHER COMPARED TO THE HOMOGENOUS REFERENCE. AN UNUSUAL DEPENDENCE OF THE FORMAL TOFS ON OXIDANT CONCENTRATION IS OBSERVED THAT ULTIMATELY ARISES FROM DIFFERING AMOUNTS OF CATALYSTS IN THE MOF CRYSTALS BEING ACTIVE.
Resonant X-ray emission spectroscopy of platinum(II) anticancer complexes
Platinum-based drugs are commonly used in cancer treatment. The biological activity of a metallodrug is obviously closely related to its chemical and stereochemical characteristics. An overlooked aspect is the effect of the ligand to the electronic structure of the metal atom (coordinating atom).
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