Results 171 to 180 of about 17,119 (265)

Tunable Oxygen Connectivity in Carbaporphyrinoid Polymers on Metal Surfaces

Angewandte Chemie, Volume 138, Issue 40, 28 September 2026.
Hydroxyl‐functionalized dicarbaporphyrinoid polymers synthesized on Au(111) enable tunable oxygen‐mediated connectivity under UHV conditions. Thermal activation yields one‐dimensional hydroxyl‐terminated polymers that can selectively evolve into either covalently‐linked dibenzo‐p‐dioxane architectures through intermolecular C–O–C coupling or two‐fold ...
Alberto Martínez‐Bajo, Maxence Urbani, Ana Barragán, Óscar Jover, Elena Pérez‐Elvira, Ilaria Tomei, Claudio Goletti, Alejandro Jiménez‐Martín, Aurelio Gallardo, Koen Lauwaet, David Écija, Diego Soler‐Polo, Marco Di Giovannantonio, Tomás Torres, José I. Urgel   +14 more
wiley   +2 more sources

Oxygen-Pressure-Limited Recovery of the Hematite α‑Fe₂O₃(0001) Surface from a Reduced Fe₃O₄(111)-like Layer. [PDF]

J Phys Chem C Nanomater Interfaces
Kumar N, Blatnik M, Čechal J.
europepmc   +1 more source

Oxidation‐Induced Internal Chemical Patterning in Copper–Gold Nanoalloys

Small, Volume 22, Issue 56, 8 October 2026.
Surface oxidation suppresses Au surface segregation and redirects Au transport to twin boundaries, replacing conventional core–shell formation with internal chemical patterning. Driven by Cu–Au mixing thermodynamics, defect‐mediated uphill diffusion creates alternating Au‐rich and Cu‐rich lamellae, revealing oxidation as a chemical pump for bulk ...
Zhikang Zhou, Hanlei Zhang, Dongxiang Wu, Jianyu Wang, Xiaobo Chen, Chaoran Li, Shan Yan, Jing Li, Adrian Hunt, Iradwikanari Waluyo, Chuanjian Zhong, Guangwen Zhou   +11 more
wiley   +1 more source

The Fierce Morphological Battle of Silver Nanoparticles: How Irregularities, Vacancies and Defects Tip the Crossing Sizes

Small, Volume 22, Issue 56, 8 October 2026.
The silver nanoparticle morphologies are identified thanks to ab initio models, including original families of defects and complex motifs, compared to measurements provided at targeted sizes (309, 561, 742, and 923 atoms). The crossings between structures to within a few atoms have been predicted due to very accurate computational conditions, which are
Nathalie Tarrat, David Loffreda
wiley   +1 more source

A Dynamic Surface Metal‐Organic Framework Electrocatalyst: Potential‐Driven Activation of Atomically Defined Au Sites for the Hydrogen Evolution Reaction

Small, Volume 22, Issue 57, 13 October 2026.
Operando EC‐STM reveals that an NHC‐based SMOF on Au(111), initially frozen in interconnected 1D chains, dynamically reconfigures under cathodic bias into a fluxional structure bearing undercoordinated Au sites while abstracting Au atoms from the support.
Paulina Wira, Leonardo Cielo, Zisheng Zhang, Mattia Cattelan, Rafał Lewandków, Dennis Pedersoli, Fujia Liu, Boyu Qie, Felix. R. Fischer, Francesco Sedona, Cristina Tubaro, Tomasz Kosmala, Stefano Agnoli   +12 more
wiley   +1 more source

On-Chip Tuning of Superconductivity in Fullerides via Current-Driven Rb⁺ Intercalation. [PDF]

ACS Nano
Shchukin KP, Gallego Lacey ON, Coquinot B, Jakowski J, Huang J, Staudenmayer P, Falke Y, Pandeya RP, Grüneis A.   +8 more
europepmc   +1 more source

Surface termination effects on Raman spectra of Ti3C2Tx MXenes: an in situ UHV analysis

SURFACE TERMINATION EFFECTS ON RAMAN SPECTRA OF TI3C2TX MXENES: AN IN SITU UHV ANALYSIS Surface termination effects on Raman spectra of Ti3C2Tx MXenes: an in situ UHV analysis / Plaickner, Julian (Rights reserved) (-
Koch, Norbert, Petit, Tristan, Schultz, Thorsten, Plaickner, Julian, Bärmann, Peer, Esser, Norbert   +5 more
core  

Consensus-based feature selection and Bayesian-optimized stacking ensembles for comprehensive fault diagnosis in series-compensated ultra-high-voltage power systems. [PDF]

Sci Rep
Nawaz R, Qamar A, Wadood A, Albalawi H.
europepmc   +1 more source

Disentangling Molecular and Intrinsic Emission in Citric Acid–Urea Carbon Dots

Small Structures, Volume 7, Issue 10, October 2026.
Citric acid–urea thermal reactions under equimolar and urea‐rich conditions generate distinct fluorophore populations alongside carbon dots. Size‐exclusion chromatography reveals precursor‐dependent molecular species, whereas extended dialysis separates low‐molecular‐weight fluorophores from retained carbon dots. Despite the different synthetic regimes,
Chiara Olla, Jela Nociarová, Antonio Cappai, Luca Fusaro, Juraj Filo, Cristina Carucci, Andrea Salis, Marzia Fantauzzi, Markéta Paloncýová, Michal Otyepka, Miroslav Medved’, Francesca Mocci, Carlo Maria Carbonaro   +12 more
wiley   +1 more source

Direct Experimental Evidence of Transient Au^δ+ Oxide in Au Electrooxidation. [PDF]

J Am Chem Soc
Redondo J, Etxebarria A, Samal PK, Albons L, Climent RF, Auras S, Šmíd B, Ju X, Matvija P, Schiller F, Setvín M, Mysliveček J, Barja S.   +12 more
europepmc   +1 more source