Results 61 to 70 of about 13,694 (213)

Promoting Alkane Binding: Crystallization of a Cationic Manganese(I)‐Pentane σ‐Complex from Solution

Angewandte Chemie International Edition, Volume 64, Issue 27, July 1, 2025.
Oxidation of Mn₂(CO)₁₀ under pseudo gas‐phase conditions generates the weakly coordinated 16 valence electron complex [Mn(CO)₅]⁺, which binds n‐pentane as the strongest ligand available in this system. Three isomers were characterized by low‐temperature NMR and X‐ray crystallography.
Malte Sellin, James D. Watson, Julia Fischer, Graham E. Ball, Leslie D. Field, Ingo Krossing   +5 more
wiley   +1 more source

Size‐Dependent Ultrafast UV Photochemistry of Aliphatic Disulfides in Solution

Chemistry – A European Journal, Volume 31, Issue 34, June 17, 2025.
Aliphatic disulfides exclusively split homolytically along the S−S bond when directly exciting the disulfide chromophore at about 250 nm. Ultrafast (<1 ps) geminate recombination at high yield is observed in solution for fragment sizes as small as L‐cysteine. The smallest disulfide recombines ten‐fold more slowly.
Jessica Harich, Rory Ma, Miguel Ochmann, Antonia Freibert, Yujin Kim, Minseok Kim, Eunhyo Kim, Madhusudana Gopannagari, Junho Lee, Tae Gyun Woo, Haneol Oh, Ru‐Pan Wang, Jae Hyuk Lee, Tae Kyu Kim, Nils Huse   +14 more
wiley   +1 more source

Autonomous Year‐Round Measurements of O3 ${\mathbf{O}}_{\mathbf{3}}$, CO $\text{CO}$, CH4 ${\text{CH}}_{\mathbf{4}}$, and N2O ${\mathbf{N}}_{\mathbf{2}}\mathbf{O}$ in the High Arctic With the Atmospheric Emitted Radiance Interferometer

Journal of Geophysical Research: Atmospheres, Volume 130, Issue 11, 16 June 2025.
Abstract Despite its status as a proverbial canary in the coal mine for global climate change, the Arctic has limited observational data, particularly during polar night. Longwave atmospheric emission has been recorded since 2006 at the Polar Environment Atmospheric Research Laboratory, located at Eureka, Nunavut, Canada (80° ${}^{\circ}$N).
Joseph Hung, Lei Liu, Mathias Palm, Zen Mariani, Gloria L. Manney, Luis F. Millán, Kimberly Strong   +6 more
wiley   +1 more source

Molecular photodissociation

, 2011
Photodissociation is the dominant removal process of molecules in any region exposed to intense ultraviolet (UV) radiation. This includes diffuse and translucent interstellar clouds, dense photon-dominated regions, high velocity shocks, the surface layers of protoplanetary disks, and cometary and exoplanetary atmospheres.
van Dishoeck, Ewine F., Visser, Ruud
openaire   +2 more sources

Near-UV photolysis cross sections of CH₃OOH and HOCH₂OOH determined via action spectroscopy [PDF]

Atmospheric Chemistry and Physics, 2007
Knowledge of molecular photolysis cross sections is important for determining atmospheric lifetimes and fates of many species. A method and laser apparatus for measurement of these cross sections in the near-ultraviolet (UV) region is described.
C. M. Roehl, Z. Marka, Z. Marka, J. L. Fry, J. L. Fry, P. O. Wennberg, P. O. Wennberg   +6 more
doaj  

New Efficient D‐π‐A and A‐π‐A Structured Type I Radical Photoinitiators for Additive Manufacturing Nanomaterials Preparation

Advanced Materials Technologies, Volume 10, Issue 12, June 18, 2025.
Groundbreaking advancements are discovered in 3D printing with new type‐I radical photoinitiators, including 1,1‐dimethoxy‐1‐phenylpropan‐2‐one. These innovative compounds, effective under visible light, enhance photopolymerization of acrylates and methacrylates, facilitating the creation of efficient nanocomposites and unlock the future of polymer ...
Andrzej Świeży, Filip Petko, Dominika Krok‐Janiszewska, Patryk Szymaszek, Mariusz Galek, Joanna Ortyl   +5 more
wiley   +1 more source

Near-IR photodissociation of peroxy acetyl nitrate [PDF]

Atmospheric Chemistry and Physics, 2005
Measurements of the C-H overtone transition strengths combined with estimates of the photodissociation cross sections for these transitions suggest that near-IR photodissociation of peroxy acetyl nitrate (PAN) is less significant (Jnear-IR≈3x10-8s ...
S. A. Nizkorodov, J. D. Crounse, J. L. Fry, C. M. Roehl, P. O. Wennberg   +4 more
doaj  

The Combination of Active‐Targeted Photodynamic Therapy and Photoactivated Chemotherapy for Enhanced Cancer Treatment

Journal of Biophotonics, Volume 18, Issue 6, June 2025.
Photoactivated chemotherapy (PACT), an oxygen‐independent light‐based therapy, utilizes chemotherapeutic regimens that remain inert until exposed to light, allowing target‐specific activation while minimizing off‐target toxicity. The integration of these techniques has the potential to improve selectivity and yield synergistic cytotoxic effects that ...
Nkune Williams Nkune, Heidi Abrahamse
wiley   +1 more source

The radiative association of PO/PH+ and the photodissociation of PH+

Frontiers in Astronomy and Space Sciences
The potential energy curves (PECs) and transition dipole moments (TDMs) of PH+ and PO are computed with the multireference configuration interaction method, and the cross-sections for the radiative association (RA) of PH+ and PO, which is the most ...
Yang Chen, Xiaohe Lin, Lidan Xiao, Zijian Li, Songbin Zhang, Yongjun Cheng, Yong Wu, Bing Yan   +7 more
doaj   +1 more source

Rate Coefficient Measurements for the CH3SCH2OO Radical + NO Reaction Between 313 and 413 K

International Journal of Chemical Kinetics, Volume 57, Issue 6, Page 391-399, June 2025.
ABSTRACT The CH3SCH2OO radical is a key intermediate formed in the gas‐phase oxidation of dimethyl sulfide (CH3SCH3, DMS). In this study, the rate coefficient, k1(T), for the gas‐phase CH3SCH2OO + NO reaction was measured using a pulsed laser photolysis–iodide chemical ionization mass spectrometry (CIMS) detection competitive reaction method over the ...
Zachary Finewax, Emmanuel Assaf, Andrew W. Rollins, James B. Burkholder   +3 more
wiley   +1 more source