Results 31 to 40 of about 6,270 (137)

Spontaneous generation of the Nambu --Jona-Lazinio interaction in quantum chromodynamics with two light quarks

open access: yes, 2005
In QCD with two light quarks with application of Bogolubov quasi-averages approach a possibility of spontaneous generation of an effective interaction, leading to the Nambu -- Jona-Lazinio model, is studied.
A. I. Alekseev   +19 more
core   +1 more source

Copper‐Catalyzed Intramolecular Hydrophosphorylation of Alkynes: Straightforward Regio‐ and Stereoselective Access to Six‐Membered Phosphorus Heterocycles

open access: yesEuropean Journal of Organic Chemistry, Volume 28, Issue 48, December 22, 2025.
Ready access to six‐membered phosphorus heterocycles through copper‐catalyzed intramolecular hydrophosphorylation of ortho‐alkynyl secondary phosphine oxides is described. The reaction proceedes with high regio‐ and stereoselectivity. An atom‐economic copper‐catalyzed intramolecular hydrophosphorylation of ortho‐alkynyl secondary phosphine oxides ...
Hamdi Sanaa   +3 more
wiley   +1 more source

Isomerized Conjugated Molecules as Hole‐Selective Contacts for Inverted Perovskite Solar Cells

open access: yesSmall Structures, Volume 6, Issue 12, December 2025.
A BTBT (benzothieno[3,2‐b]benzothiophene) isomeric derivative, (2‐(benzo[b]benzo[4,5]thieno[2,3‐d]thiophen‐4‐yl)ethyl)phosphonic acid (BTBT‐Z), is reported. BTBT‐Z adopts a zig‐zag configuration with a sulfur opposite to the anchoring group. This structure enhances its interaction with the perovskite layer, improving crystallization and thin‐film ...
Qingqing Liu   +18 more
wiley   +1 more source

1,3‐Diazetidin‐2‐Ones: Synthetic Approaches and Therapeutic Promise within the Aza‐β‐Lactam Family

open access: yesEuropean Journal of Organic Chemistry, Volume 28, Issue 43, November 24, 2025.
This review explores the synthesis, reactivity, and therapeutic potential of 1,3‐diazetidin‐2‐ones—an underexplored class of aza‐β‐lactams. Emphasis is placed on synthetic challenges, emerging methodologies, and their promise as β‐lactamase‐resistant scaffolds in medicinal chemistry. 1,3‐diazetidin‐2‐ones, overlooked members of the aza‐β‐lactam family,
Jozef Kristek, Jiří Pospíšil
wiley   +1 more source

Synthesis of Diaryl‐ and Dialkynylphosphinates From Ubiquitous PV Sources via a Redox‐Neutral Approach

open access: yesAdvanced Science, Volume 12, Issue 36, September 25, 2025.
Classical strategies for P─C bond formation rely on precursors (e.g., PH3, H2PO2, PCl3) obtained from P4, which is produced via the energy‐intensive thermal process. Here, an alternative, redox‐neutral approach is explored. Primary phosphate sources are activated with triflic anhydride (Tf2O) and 4‐dimethylaminopyridine (DMAP) to a versatile PV ...
Tobias Schneider   +5 more
wiley   +1 more source

Catalysis in Chemical Modification of Proteins

open access: yesChemCatChem, Volume 17, Issue 11, June 6, 2025.
Catalytic principles of synthetic organic chemistry have been increasingly applied to chemical modification of proteins during the recent years. This review article describes how seven types of catalytic systems —electrocatalysis, photocatalysis, metal catalysis, acid catalysis, organocatalysis, supramolecular catalysis, and heterogeneous catalysis ...
Seiya Ishizawa   +4 more
wiley   +1 more source

Two-loop QED Corrections to Bhabha Scattering

open access: yes, 2006
Recent developments in the calculation of the NNLO corrections to the Bhabha scattering differential cross section in pure QED are briefly reviewed and discussed.Comment: 5 pages, 4 figures, to appear in the proceedings of the 7th International ...
A. Ferroglia   +55 more
core   +2 more sources

From Hadronic Cross Section to the measurement of the Vacuum Polarization at KLOE: a fascinating endeavour [PDF]

open access: yes, 2017
The KLOE experiment at the $\phi-factory$ DA$\Phi$NE in Frascati is the first to have employed Initial State Radiation (ISR) to precisely determine the $e^+e^-\to\pi^+\pi^-(\gamma)$ cross section below 1 GeV.
Venanzoni, Graziano
core   +3 more sources

Revealing the Role of Spacer Length and Methoxy Substitution of Dipodal Indolocarbazole‐based SAMs on the Performance of Inverted Perovskite Solar Cells

open access: yesSmall, Volume 21, Issue 22, June 5, 2025.
Self‐assembled monolayers based on π‐expanded indolo[2,3‐a]carbazole with pentyl linking chains are incorporated as hole‐transporting materials for the fabrication of highly efficient inverted perovskite solar cells. Abstract The application of self‐assembled molecules (SAMs) as selective charge transport layers in inverted perovskite solar cells ...
José Manuel Ramón   +6 more
wiley   +1 more source

Recent Advances in Palladium‐Catalyzed Phosphonation of Aryl Halides, Sulfonates and Related Derivatives

open access: yesEuropean Journal of Organic Chemistry, Volume 28, Issue 20, May 28, 2025.
This review provides an in‐depth exploration of recent progress in palladium‐catalyzed phosphonation, focusing on the use of aryl halides, sulfonates and related derivatives as key substrates. It discusses innovations in catalytic systems, reaction conditions, and substrate versatility while addressing limitations such as low reactivity of certain ...
YiYi Yang, On Ying Yuen, Chau Ming So
wiley   +1 more source

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