Diego Sampedro
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View article: A Water Soluble and Solid‐State Molecular Solar Thermal (MOST) System as Renewable Solar Fuel
A Water Soluble and Solid‐State Molecular Solar Thermal (MOST) System as Renewable Solar Fuel Open
Solar energy storage is key to overcome the intermittent character of sunlight. We present a sustainable solution based on norbornadiene–quadricyclane pairs for molecular solar thermal (MOST) energy storage working in highly concentrated n…
View article: A Water Soluble and Solid‐State Molecular Solar Thermal (MOST) System as Renewable Solar Fuel
A Water Soluble and Solid‐State Molecular Solar Thermal (MOST) System as Renewable Solar Fuel Open
Solar energy storage is key to overcome the intermittent character of sunlight. We present a sustainable solution based on norbornadiene–quadricyclane pairs for molecular solar thermal (MOST) energy storage working in highly concentrated n…
View article: Nature‐Inspired Uv Filters: Synthetic Mycosporine‐Like Amino Acids and Gadusol Analogs for Enhanced Photoprotective and Antioxidant Performance
Nature‐Inspired Uv Filters: Synthetic Mycosporine‐Like Amino Acids and Gadusol Analogs for Enhanced Photoprotective and Antioxidant Performance Open
Photoprotection is a crucial strategy for preventing the harmful effects of ultraviolet (UV) radiation on human skin, including sunburn, photoaging, and skin cancer. Currently, there is a growing need to develop more sustainable UV filters…
View article: Minimising sunburn necrosis on <i>Vitis vinifera</i> L. ‘Riesling’ grapes by defoliation, photo- and thermal protection
Minimising sunburn necrosis on <i>Vitis vinifera</i> L. ‘Riesling’ grapes by defoliation, photo- and thermal protection Open
Sunburn on grapes has emerged as an economic concern in recent decades. The phenomenon can be attributed to climatic changes, characterised by elevated air temperatures and intense solar radiation, leading to increased crop failures as wel…
View article: A Sustainable Molecular Solar Thermal (MOST) System as Renewable Solar Fuel in Water and Solid-State
A Sustainable Molecular Solar Thermal (MOST) System as Renewable Solar Fuel in Water and Solid-State Open
Solar energy storage is key to overcoming the intermittent character of sunlight. Herein, we present new norbornadiene-quadricyclane pairs for molecular solar thermal energy storage working in highly concentrated neutral water solutions an…
View article: Mapping Boryl Radical Properties and Reactivity Using Ma-chine Learning: the B-rad and React-B-rad maps
Mapping Boryl Radical Properties and Reactivity Using Ma-chine Learning: the B-rad and React-B-rad maps Open
Boryl radicals have become indispensable in modern organic synthesis, yet, translating their complex steric and electronic properties into actionable reactivity insights remains challenging. Herein, we present an updated, publicly accessib…
View article: Merging Hydrogen‐Atom‐Transfer and the Truce‐Smiles Rearrangement for Synthesis of β‐Arylethylamines from Unactivated Allylsulfonamides
Merging Hydrogen‐Atom‐Transfer and the Truce‐Smiles Rearrangement for Synthesis of β‐Arylethylamines from Unactivated Allylsulfonamides Open
Arylethylamines are crucial elements in pharmaceutical molecules, making methods for their synthesis highly significant. The Truce–Smiles rearrangement is a well‐developed strategy to synthesize arylethylamine motifs via aryl migration. Ho…
View article: Design, testing and characterization of noble-metal catalysts for the heat-release reaction of a molecular solar thermal energy storage isomer pair
Design, testing and characterization of noble-metal catalysts for the heat-release reaction of a molecular solar thermal energy storage isomer pair Open
A series of heterogeneous catalysts, based on Pt and Au, have been developed for MOlecular Solar Thermal (MOST) system energy release. Low oxidation states as well as a reduced support, such as carbon, are key to a rapid back-conversion re…
View article: One-Pot Regio- and Diastereoselective Gold-Catalyzed Propargylation of in Situ Activated Chromones and Consecutive Cyclization
One-Pot Regio- and Diastereoselective Gold-Catalyzed Propargylation of in Situ Activated Chromones and Consecutive Cyclization Open
Herein, we report a gold-catalyzed propargylation of chromone derivatives by propargylsilanes. Chromones are synergistically activated by the silylium cation resulting from the gold activation of the propargylsilane. The reaction exclusive…
View article: Merging Hydrogen-Atom-Transfer and the Truce-Smiles Rearrangement for Synthesis of beta-Arylethylamines from Unactivated Allylsulfonamides
Merging Hydrogen-Atom-Transfer and the Truce-Smiles Rearrangement for Synthesis of beta-Arylethylamines from Unactivated Allylsulfonamides Open
Arylethylamines are crucial elements in pharmaceutical molecules, making methods for their synthesis highly significant. The Truce-Smiles rearrangement is a well-developed strategy to synthesize arylethylamine motifs via aryl migration. Ho…
View article: Sustainable Heat Generation in Flow from a Molecular Solar Thermal Energy Storage System
Sustainable Heat Generation in Flow from a Molecular Solar Thermal Energy Storage System Open
As the global deployment of renewable technologies accelerate, finding efficient ways to store energy will aid in responding to shifting energy demands. A prospective option not only in harvesting solar energy but also in emission‐free hea…
View article: Amide‐Derived Norbornadienes: Towards Efficient Molecular Solar Thermal Systems in Polar Solvents
Amide‐Derived Norbornadienes: Towards Efficient Molecular Solar Thermal Systems in Polar Solvents Open
Solar energy harvesting is a promising alternative to the escalating energy demand. Among emerging technologies, MOlecular Solar Thermal (MOST) systems offer exciting avenues for solar fuel generation. However, their widespread application…
View article: Asymmetric BODIPY Dyes Enabling Triplet–Triplet Annihilation Upconversion
Asymmetric BODIPY Dyes Enabling Triplet–Triplet Annihilation Upconversion Open
The construction of triplet-triplet annihilation upconversion (TTA-UC) systems with upconversion (UC) emission efficiency at low power densities is still under continuing exploration. From an environmental point of view, the utilization of…
View article: Formal Insertion of a Metal Carbene Complex into a σ‐Carbon‐Carbon Bond. Gold‐Catalyzed Synthesis of 3<i>H</i>‐Indoles
Formal Insertion of a Metal Carbene Complex into a σ‐Carbon‐Carbon Bond. Gold‐Catalyzed Synthesis of 3<i>H</i>‐Indoles Open
We report here a formal insertion of a metal carbene complex in a single carbon‐carbon bond. This behavior occurs with the participation of an α‐imino gold carbene complex, generated from benzofused triazapentalenes or, in a one‐pot proced…
View article: Evaluation of MAA Analogues as Potential Candidates to Increase Photostability in Sunscreen Formulations
Evaluation of MAA Analogues as Potential Candidates to Increase Photostability in Sunscreen Formulations Open
Avobenzone is one of the most widely used sunscreens in skin care formulations, but suffers from some drawbacks, including photo instability. To mitigate this critical issue, the use of octocrylene as a stabilizer is a common approach in t…
View article: Synthesis and Characterization of Carbon-Based Heterogeneous Catalysts for Energy Release of Molecular Solar Thermal Energy Storage Materials
Synthesis and Characterization of Carbon-Based Heterogeneous Catalysts for Energy Release of Molecular Solar Thermal Energy Storage Materials Open
Molecular solar thermal energy storage (MOST) systems are rapidly becoming a feasible alternative to energy storage and net-zero carbon emission heating. MOST systems involve a single photoisomerization pair that incorporates light absorpt…
View article: State-of-the-art and challenges towards a Molecular Solar Thermal (MOST) energy storage device
State-of-the-art and challenges towards a Molecular Solar Thermal (MOST) energy storage device Open
In this minireview, the recent advances and limitations of MOlecular Solar Thermal (MOST) energy storage technology are discussed, including a discussion of the photoisomerization and the catalytic back-conversion reactions.
View article: Photochemical Transformations of Diverse Biologically Active Resveratrol Analogs in Batch and Flow Reactors
Photochemical Transformations of Diverse Biologically Active Resveratrol Analogs in Batch and Flow Reactors Open
Previous biological tests have shown that some resveratrol analogs exhibited significant antioxidative and cholinesterase inhibitory potential, as evidenced by lower IC50 values compared to the established standards, resveratrol and galant…
View article: Cover Feature: Unveiling the Potential of Heterogeneous Catalysts for Molecular Solar Thermal Systems (Chem. Eur. J. 1/2024)
Cover Feature: Unveiling the Potential of Heterogeneous Catalysts for Molecular Solar Thermal Systems (Chem. Eur. J. 1/2024) Open
Trapping sunlight energy into chemical bonds has become an important method for storing renewable energy and releasing it on demand. To illustrate the new catalyst-testing protocol, a cyclic road shows the photoisomerization process trappi…
View article: Unveiling the Potential of Heterogeneous Catalysts for Molecular Solar Thermal Systems
Unveiling the Potential of Heterogeneous Catalysts for Molecular Solar Thermal Systems Open
Solar energy utilization has gained considerable attention due to its abundance and renewability. However, its intermittent nature presents a challenge in harnessing its full potential. The development of energy storing compounds capable o…
View article: Ring buckling and C=N isomerization pathways for efficient photoprotection in two nature‐inspired UVA sunscreens revealed through ultrafast dynamics and high‐level calculations
Ring buckling and C=N isomerization pathways for efficient photoprotection in two nature‐inspired UVA sunscreens revealed through ultrafast dynamics and high‐level calculations Open
Sunscreens provide a frontline defense for our DNA against the damage caused by ultraviolet (UV) radiation. The active ingredients in topically applied sunscreens that provide this defense are UV filters, which preferentially absorb or ref…
View article: Investigating the Mechanism of Ni-Catalyzed Coupling of Photoredox-Generated Alkyl Radicals and Aryl Bromides: A Computational Study
Investigating the Mechanism of Ni-Catalyzed Coupling of Photoredox-Generated Alkyl Radicals and Aryl Bromides: A Computational Study Open
Photoredox catalysis has emerged as an alternative to classical cross-coupling reactions, promoting new reactivities. Recently, the use of widely abundant alcohols and aryl bromides as coupling reagents was demonstrated to promote efficien…
View article: On the Role of N‐Heterocyclic Carbene Salts in Alkyl Radical Generation from Alkyl Alcohols: A Computational Study
On the Role of N‐Heterocyclic Carbene Salts in Alkyl Radical Generation from Alkyl Alcohols: A Computational Study Open
Formation of carbon‐carbon bonds through cross‐coupling reactions using readily available substrates, like alcohols, is crucial for modern organic chemistry. Recently, direct alkyl alcohol functionalization has been achieved by the use of …
View article: A Photochemical Overview of Molecular Solar Thermal Energy Storage
A Photochemical Overview of Molecular Solar Thermal Energy Storage Open
The design of molecular solar fuels is challenging because of the long list of requirements these molecules have to fulfil: storage density, solar harvesting capacity, robustness, and heat release ability. All of these features cause a par…
View article: Mechanism of the Aza-Piancatelli Reaction: Scope and Limitations of Furan Substitution in Donor–Acceptor Stenhouse Adduct Synthesis
Mechanism of the Aza-Piancatelli Reaction: Scope and Limitations of Furan Substitution in Donor–Acceptor Stenhouse Adduct Synthesis Open
[Image: see text] The aza-Piancatelli reaction has been widely used to synthesize donor–acceptor Stenhouse adducts (DASAs), a new class of molecular photoswitches with unique properties. However, the substitution pattern of furan cores has…
View article: Controlling Antimicrobial Activity of Quinolones Using Visible/NIR Light-Activated BODIPY Photocages
Controlling Antimicrobial Activity of Quinolones Using Visible/NIR Light-Activated BODIPY Photocages Open
Controlling the activity of a pharmaceutical agent using light offers improved selectivity, reduction of adverse effects, and decreased environmental build-up. These benefits are especially attractive for antibiotics. Herein, we report a s…
View article: On the Mechanism of Halogen Atom Transfer from C−X Bonds to α‐Aminoalkyl Radicals: A Computational Study
On the Mechanism of Halogen Atom Transfer from C−X Bonds to α‐Aminoalkyl Radicals: A Computational Study Open
Generation of carbon centered radicals from organic halides represents a powerful tool in modern organic chemistry, especially in the context of photoredox catalysis. However, activation of carbon–halogen bonds is usually promoted by toxic…
View article: Controlled Synthesis of Up-Conversion NaYF4:Yb,Tm Nanoparticles for Drug Release under Near IR-Light Therapy
Controlled Synthesis of Up-Conversion NaYF4:Yb,Tm Nanoparticles for Drug Release under Near IR-Light Therapy Open
Up-Conversion materials have received great attention in drug delivery applications in recent years. A specifically emerging field includes the development of strategies focusing on photon processes that promote the development of novel pl…