Results 41 to 50 of about 13,694 (213)

Elucidating the Structures of Substituted Adamantyl Esters and Ethers Using Rotational Spectroscopy and Computations

open access: yesChemPhysChem, EarlyView.
Five adamantyl esters and ethers with alkyl substituents of increasing branching are investigated by rotational spectroscopy. From the experimental data, their accurate structures are derived. All the derivatives feature similar CC distances, regardless of the functional group, the alkyl substituent, or other effects as methyl top internal rotation ...
Nataša Burić   +5 more
wiley   +1 more source

Vibrationally excited molecular hydrogen production from the water photochemistry

open access: yesNature Communications, 2021
Understanding the source of vibrationally excited molecular hydrogen is an essential prerequisite for understanding the chemical evolution in the universe.
Yao Chang   +11 more
doaj   +1 more source

Contrasting Solution and Gas‐Phase: Understanding Structure and Reactivity of Gold‐Diazenyl Intermediates

open access: yesHelvetica Chimica Acta, EarlyView.
Xx xx. Abstract Gold(I)‐catalyzed cross‐coupling reactions with aryldiazonium salts are instrumental in forming C─C and C─N bonds. However, mechanistic details remain unclear, particularly the role of diazenyl intermediates. We employ stoichiometric reactions, NMR spectroscopy, electrospray ionization mass spectrometry, and infrared photodissociation ...
Florian Ruepp   +4 more
wiley   +1 more source

Isolated spin polarized hydrogen atoms as targets for laser-induced polarized electron acceleration

open access: yesFrontiers in Physics
High density Spin Polarized Hydrogen (SPH) atoms, which can be prepared using UV dissociation of hydro-halide molecules, can be attractive as potential targets for laser ionization/acceleration schemes aiming to create high energy and high current ...
Dimitris Sofikitis   +5 more
doaj   +1 more source

Impact of Doping on Charge Transport Properties in Thienothiophene‐Based Organic Porous Polymers

open access: yesMacromolecular Materials and Engineering, EarlyView.
Thienothiophene‐based organic porous conjugated polymers, possessing triphenylamine (TPA), tetraphenylethylene (TPE), and carbazole (Cbz) as linkers, display a higher charge transport property upon iodine doping. Abstract Organic covalent frameworks (COFs) have played significant roles in achieving high performance as electronic conductive and semi ...
Melis Unal   +9 more
wiley   +1 more source

X-ray induced Coulomb explosion imaging of transient excited-state structural rearrangements in CS2

open access: yesCommunications Physics, 2023
Structural imaging of transient excited-state species is a key goal of molecular physics, promising to unveil rich information about the dynamics underpinning photochemical transformations.
James Unwin   +36 more
doaj   +1 more source

Recent Advancements in the Characterization of D‐Amino Acid and Isoaspartate Post‐Translational Modifications

open access: yesMass Spectrometry Reviews, EarlyView.
ABSTRACT One of the great triumphs of mass spectrometry‐based peptide and protein characterization is the characterization of their modifications as most modifications have a characteristic mass shift. What happens when the modification does not change the mass of the peptide?
Samuel Okyem, Jonathan V. Sweedler
wiley   +1 more source

Quantitative Top–Down Proteomics Reveals Significant Differences in Histone Proteoforms Between Metastatic and Nonmetastatic Colorectal Cancer Cells

open access: yesPROTEOMICS, EarlyView.
ABSTRACT Colorectal cancer (CRC) development is closely associated with the accumulation of both genetic and epigenetic alterations. Many efforts have been made to investigate the role of epigenetic modifications in CRC metastasis. In this work, we present the quantitative top‐down proteomics study focusing on histone proteoforms between metastatic ...
Fei Fang   +5 more
wiley   +1 more source

Simulation-guided engineering of split GFPs with efficient β-strand photodissociation

open access: yesNature Communications, 2023
Green fluorescent proteins (GFPs) are ubiquitous for protein tagging and live-cell imaging. Split-GFPs are widely used to study protein-protein interactions by fusing proteins of interest to split GFP fragments that create a fluorophore upon typically ...
Yasmin Shamsudin   +4 more
doaj   +1 more source

Electron Transfer Dissociation and Synchrotron UV Photodissociation of Trapped Sodiated Ions Produced From Polyacrylates by Electrospray Ionization

open access: yesRapid Communications in Mass Spectrometry, EarlyView.
ABSTRACT Rationale Poly (acrylates)s can be distinguished from one another by the nature of their side chains. From model poly (acrylates)s, the purpose of this work was to evaluate the contribution of alternative activation techniques to the collisional activation, based on ion–ion and ion–photon interactions.
Inès Aloui   +5 more
wiley   +1 more source

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