Results 171 to 180 of about 323,885 (290)

Lanthanide Centered and Circular Polarized Luminescence (CPL) From Tb(III) Complexes Made From Structurally Simple Methoxy‐Phenyl and Phenol‐Derived Pyridyldiamide (pda) Ligands

Chemistry – A European Journal, EarlyView.
The development of chiral pda derived methoxy ligands L1a [1(R,R)] and L1b [1(S,S)], along with their phenol derivatives L2a [2(R,R)] and L2b [2(S,S)], and their respective Tb(III) complexes is described. These Tb‐complexes exhibited Tb(III)‐centered emission upon and their chiroptical properties were probed by using both CD and CPL spectroscopy ...
Jennifer E. Jones, Jonathan A. Kitchen, Robert D. Peacock, Thorfinnur Gunnlaugsson   +3 more
wiley   +1 more source

Technological innovations and hafted technology in central China ~160,000-72,000 years ago. [PDF]

Nat Commun
Yue JP, Song GD, Yang SX, Kang SG, Li JY, Marwick B, Ollé A, Fernández-Marchena JL, Shu PX, Liu HY, Zhang YX, Huan FX, Zhao QP, Qiao BT, Shen ZS, Deng CL, Petraglia M.   +16 more
europepmc   +1 more source

Proximal Steric Shielding Unlocks High Solid‐State Luminescence in Quinoxaline‐Fused Pyrene Heteroacenes

Chemistry – A European Journal, EarlyView.
Proximal steric tuning of quinoxaline‐fused pyrene heteroacenes enables soluble derivatives that exhibit solid‐state photoluminescence quantum yields (PLQYs) up to 82%, surpassing previous benchmarks. This work reveals key structure–property relationships for next‐generation, processable organic emitters in advanced optoelectronic applications ...
Rafiq Ahamed, Sonal Patil, Madhusudan Dutta, Godi Kiran Venkata Sai, Sergey Fisher, Anil Bhadke, Rama Krishna Gamidi, Susnata Pramanik, Tomáš Šolomek, Sudhakar Gaikwad   +9 more
wiley   +1 more source

Regional variability in the Acheulian to Middle Stone Age transition in southern Africa. [PDF]

Sci Rep
Blackwood AF, Wilkins J, Arnold LJ, Demuro M, Boschian G, Caruana MV, Lalunio EF, Spate M, Hatton A, Muir RA, Wilson CG, Quick LJ, Meredith-Williams M, Herries AIR.   +13 more
europepmc   +1 more source

Chiral Dipicolinamide‐Based Push–Pull π‐Conjugated Systems as Nonreciprocal Circularly Polarized Luminescence Emitters

Chemistry – A European Journal, EarlyView.
This work presents the synthesis and characterization of chiral dipicolinamide push–pull fluorophores. While possessing similar photophysical properties in solution, their solvent‐annealed thin films exhibit unexpected, nonreciprocal chiroptical activity in both absorption and emission, including a complete inversion of the chiroptical profile upon ...
Filippo Petri, Luca Gherardi, Lorenzo Di Bari, Lorenzo Arrico   +3 more
wiley   +1 more source

Quaternary landscape evolution of Apennines peri-Adriatic belt: Insights into climate and tectonics from the fluvial record. [PDF]

Sci Adv
Ruscitto V, Delchiaro M, Richard M, Iacobucci G, Piacentini D, Troiani F, Seta MD.   +6 more
europepmc   +1 more source

Turning Bonding Into Function: The Emerging Role of the Bioactive Selenium─Metal Motif in Toxicology and Medicinal Chemistry

Chemistry – A European Journal, EarlyView.
Balancing Act: Se─M bond serving as the fulcrum of the balance scale to compare the different weight of toxicity and therapeutic effects in biological environment. ABSTRACT The synthesis and characterization of organo‐selenium compounds have attracted considerable interest for decades, driven by the search for efficient catalysts and bioinspired ...
Matteo Filippi, Alessandro Rubbi, Pablo A. Nogara, Giovanni Ribaudo, Vito Lippolis, João B. T. Rocha, Laura Orian   +6 more
wiley   +1 more source

Experimental methods in chemical engineering: Cyclic voltammetry—CV

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Cyclic voltammetry (CV) is a foundational electroanalytical technique for investigating redox behaviour and evaluating material performance across fields such as molecular electrochemistry, electrocatalysis, sensing, and energy storage. Despite its widespread use, a gap remains between formal electrochemical theory and the practical data ...
Yasser Matos‐Peralta, Christopher Panaritis, JoElen Hagler, Clara Santato, Gregory S. Patience   +4 more
wiley   +1 more source

Holocene Nile dynamics shaped the physical and cultural landscape of ancient Nubia. [PDF]

Proc Natl Acad Sci U S A
Peeters J, Winkels TG, Wolf P, Skuldbøl TBB, Chamberlain EL, Büchner-Matthews S, Elamin SM, Mohamed EA, Emberling G.   +8 more
europepmc   +1 more source

Coupling Selective Organic Oxidation With Hydrogen Evolution Over Metal Halide Perovskite Photocatalysts: Halide‐Dependent Design, Mechanisms, and Stability Challenges

EcoEnergy, EarlyView.
This Review highlights how metal halide perovskites enable coupled selective organic oxidation and hydrogen evolution under visible light. It summarizes halide‐dependent design principles, surface engineering strategies, reaction mechanisms, and stability challenges, providing guidance for developing efficient and durable photocatalytic systems ...
Jutarat Jitrada, Lizhen Liu, Patchanita Thamyongkit, Yanfa Yan, Jun Huang   +4 more
wiley   +1 more source