Results 41 to 50 of about 1,280 (170)

Photogeneration of Hydrogen in Water via Self‐Assembly‐Induced Colloidal Covalent Organic Framework Particles

Small Science, Volume 6, Issue 3, March 2026.
A surfactant‐free strategy using a functional Poly(DiMethylAminoEthylMethAcrylate) polybase enables stable colloidal imine‐linked COFs formation via self‐assembly‐induced process. A dual effect is demonstrated with the control in size and stabilization in colloidal state of the COFs in situ synthesized.
Axelle Larrieu, Sabuj Kanti Das, Aurelien Viterisi, Laurent Billon   +3 more
wiley   +1 more source

Recent Advances in Metal‐Based Catalysts for Nitrile Hydration to Amides: Mechanistic Aspects

The Chemical Record, Volume 26, Issue 1, January 10, 2026.
Amide vital functional group plays a key role in the composition of amide‐containing compounds, including peptides, proteins, and amino acids. Demand for innovative amide derivatives grows due to their crucial role in drug development. A cost‐effective method uses metal‐catalyzed hydration of nitriles to amides.
Fatima‐Ezzahraa Essebbar, Hicham Ben El Ayouchia, Hafid Anane, Salah‐Eddine Stiriba   +3 more
wiley   +1 more source

On the Attack by Alcohol on One Carbon-Carbon Double Bond of Dichloro(Norbornadiene)Palladium(II)

CHIMIA, 1975
The kinetics of nucleophilic attack by alcohol on one double bond of PdCl2(nbd) (nbd = 2,5-norbornadiene) has been studied by UV spectrophotometry.
Raymond Roulet, Raymond Vouillamoz, Umberto Belluco, Mauro Graziani   +3 more
doaj   +1 more source

Mn2+ Bispidine Complexes as Potential Magnetic Resonance Imaging Agents : Noncoordinating Peripheral Functional Groups Affect Structural, Kinetic, and Relaxation Properties

ChemistryEurope, Volume 4, Issue 1, January 2026.
In the family of Mn2+ complexes formed with pentadentate bispidine chelates, functional groups that do not interfere with metal coordination can play a significant role in enhancing kinetic inertness and proton relaxation efficacy. Mn2+ bispidine complexes combine unprecedented kinetic inertness with high relaxivity and are under scrutiny as potential ...
Maryame Sy, Daouda Ndiaye, Hervé Meudal, Loïc J. Charbonnière, Aline M. Nonat, Éva Tóth   +5 more
wiley   +1 more source

Pigment‐Macromolecule Complexes Isolation from Sea Urchin Biomineral Waste for Coloring Materials

Chemistry–Methods, Volume 6, Issue 1, January 2026.
A methodology has been developed to extract the colored organic fraction occluded within seashell biomineral waste. Applied to sea urchin skeletons, free polyhydroxylated naphthoquinone (PHNQ) pigments and PHNQ‐macromolecule complexes are isolated. These complexes show superior pH stability in purple hues compared to free PHNQ, which shifts from red to
Claudio Ferreira, Vaskar Sardhalia, Alshaba Kakar, Romain Descamps, Lucrèce Matheron, François Ribot, Alexandre Disser, Tony Jouanneau, Elena Vasileva, Natalia Mishchenko, Nadine Nassif, Frédéric Marin, Marie Albéric   +12 more
wiley   +1 more source

Do Island Spiders Descend From Trees? – A Tale of Island Colonisation and Niche Expansion

Journal of Biogeography, Volume 52, Issue 12, December 2025.
ABSTRACT Aim Oceanic islands are known for being home to drastically different communities compared to the mainland, as their isolation and limited area significantly favour clades able to travel long distances over water. On spiders, this happens mainly, although not exclusively, through ballooning whose propensity is unevenly distributed across ...
R. Costa, N. Macías‐Hernández, F. Rigal, P. A. V. Borges, P. Cardoso   +4 more
wiley   +1 more source

Analyses of Electrode–Electrolyte Interactions in Commercial Layered Oxide/Hard Carbon Na‐Ion Cells via Optical Sensors

Advanced Energy Materials, Volume 15, Issue 37, October 7, 2025.
Use of advanced optical sensing techniques to track operando the physical and chemical changes of interfacial reactions in commercial type sodium‐ion cells. The nature of layered oxide cathode (O3 vs P2) influences the electrolyte reactivity and additives reduce the parasitic reactions.
Clémence Alphen, Juan Forero‐Saboya, Dominique Foix, Leiting Zhang, John Abou‐Rjeily, Charlotte Mouravieff, Sathiya Mariyappan, Jean‐Marie Tarascon   +7 more
wiley   +1 more source

Photo-electron Spectra of Arsenic and Cadmium Selenides, Selenium and Germanium-Arsenic-Selenium Glasses

CHIMIA, 1977
The 1253.6 eV induced photo-electron spectra of solid selenides and red selenium are compared with the industrially used glass Ge33As12Se56. Corresponding to the low Se/Ge ratio, the germanium I values are low, the Auger signals indicate a high Wagner ...
Renata Reisfeld, A. Bornstein, H. Berthou, C.K. Jørgensen   +3 more
doaj   +1 more source

Unveiling the Impact of Oven vs. Microwave Roasting: Enhancing the Physico‐Chemical Properties, Stability, and Bioactive Potential of Prickly Pear Seed Oil

eFood, Volume 6, Issue 5, October 2025.
The current investigation mainly focused on the improvement of oil yield and quality through conventional oven and microwave roasting. The assessment has been based on various quality traits, including bioactive components, physicochemical properties, and antioxidant activities.
Ahmed Marhri, Aymane Allay, Youssef Rbah, Mehdi Boumediene, Hana Serghini‐Caid, Abdelaaty A. shahat, Omar M. Noman, Christophe Hano, Ahmed Elamrani, Malika Abid, Mohamed Addi   +10 more
wiley   +1 more source

Photo-electron Spectra of Germanium, Arsenic and Lead-containing Sulphide Glasses Favouring Lanthanide Luminescence

CHIMIA, 1976
Thiogermanate and thioarsenite glasses containing bivalent calcium or lead have low phonon wave-numbers and enhance line-emission of trivalent lanthanides by less extensive multi-phonon de-excitation and by energy transfer.
Renata Reisfeld, C. K. Jørgensen, A. Bornstein, H. Berthou   +3 more
doaj   +1 more source