Results 201 to 210 of about 5,973,776 (275)

Nitrogen stable isotope analysis of sulfonamides by derivatization-gas chromatography-isotope ratio mass spectrometry. [PDF]

Anal Bioanal Chem
Dou Q, Canavan A, Fu Y, Xiang L, Wang Y, Wang X, Jiang X, Dirr C, Wang F, Elsner M.   +9 more
europepmc   +1 more source

A Refinement of Nitrogen Isotope Analysis of Coal Using Elemental Analyzer/Isotope Ratio Mass Spectrometry and the Carbon and Nitrogen Isotope Compositions of Coals Imported in China. [PDF]

ACS Omega, 2020
Feng L, Li H, Yan D.
europepmc   +1 more source

Chiral Fjord‐Edged Nanographenes Constructed by Allylic‐Migration‐Mediated Cyclization

Angewandte Chemie, EarlyView.
A novel allylic‐migration‐mediated cyclization strategy enables the construction of two fjord‐edged nanographenes without steric blocking groups. The resulting non‐planar molecules exhibit remarkable chiroptical properties, with an absorption dissymmetry factor surpassing those of pristine [5]helicene and previously reported fjord‐edged nanographenes ...
Zhen‐Lin Qiu, Jiang‐Feng Xing, Boris Borrisov, Qing‐Song Deng, Renxiang Liu, Muhammad Imran, Ji Ma, Xinliang Feng   +7 more
wiley   +2 more sources

Guidelines for Accurate and Precise Stable Isotope Analysis of Calcite, Dolomite, and Magnesite Using a Carbonate Device for Continuous Flow-Isotope Ratio Mass Spectrometry (CF-IRMS). [PDF]

Rapid Commun Mass Spectrom
Kim S, Kim ST, Knyf M.
europepmc   +1 more source

Hydration‐Gated Photoinduced Electron Transfer in BODIPY Dyes

Angewandte Chemie, EarlyView.
Hydration switches photoinduced electron transfer (PET) ON in alkoxy‐coordinated BODIPY dyes via specific hydrogen bonding. This gating yields a fluorescence lifetime span of ∼6 ns, enabling fluorescence lifetime imaging microscopy (FLIM) contrast in live cells and organoids. ABSTRACT Fluorescent probes based on photoinduced electron transfer (PET) are
Venkata N. K. Mamillapalli, Irina A. Okkelman, Fatima Akhssas, Greta Sambucari, Angela C. Debruyne, Dinesh Beniwal, Christophe Bucher, Mariangela Di Donato, Ruslan I. Dmitriev, Mikhail A. Filatov   +9 more
wiley   +2 more sources

Large-Volume Injection and Assessment of Reference Standards for n-Alkane δD and δ¹³C Analysis via Gas Chromatography Isotope Ratio Mass Spectrometry. [PDF]

Rapid Commun Mass Spectrom
Zander PD, Rubach F, Martínez-García A.   +2 more
europepmc   +1 more source

Natal origin of the invasive biosecurity pest, brown marmorated stink bug (Halyomorpha halys: Penatomidae), determined by dual-element stable isotope-ratio mass spectrometry. [PDF]

Pest Manag Sci, 2020
Holder PW, Van Hale RJ, Frew R, George S, Armstrong KF.   +4 more
europepmc   +1 more source

A Mild Disilane‐Enabled Halide‐to‐Deuterium Manifold With D2O for Aryl and Benzylic Halides

Angewandte Chemie, EarlyView.
A broadly applicable Pd‐catalyzed dehalogenative deuteration enables efficient conversion of aryl and benzylic halides with inexpensive deuterium oxide (D2O). The method proceeds under exceptionally mild conditions without strong bases, harsh reductants, or stoichiometric Lewis acid halide scavengers, and tolerates a wide range of functional groups ...
Wenliang Wang, Ryan Parlett, Liam Hornstein, Landon Conklin, Qi Tang, Xiaodong Shi   +5 more
wiley   +2 more sources

Elucidating Photo‐Kinetic Control in Photothermal Reverse Water‐Gas Shift Reaction

Angewandte Chemie, EarlyView.
Light directly regulates the rate‐determining step (RDS) in photothermal catalysis. In a Mars–van Krevelen (MvK)‐type reverse water‐gas shift (RWGS) reaction over In‐doped MoO2, light shifts the RDS from the H2‐related reduction half‐reaction to the CO2‐related oxidation half‐reaction, enhancing catalytic activity and lowering the apparent activation ...
Junchuan Sun, Rui Song, Chang Xu, Xue Ding, Wanguo Gao, Athanasios A. Tountas, Zhe Lu, Jiakun Wang, Zeshu Zhang, Xiaolu Zhuo, Yingfang Yao, Zhigang Zou, Geoffrey A. Ozin, Lu Wang   +13 more
wiley   +2 more sources

One‐Pot Biphasic Photocatalytic CO2‐to‐Carbonylation Cascades

Angewandte Chemie, EarlyView.
Bioinspired biphasic compartmentalization enables one‐pot cascades where photocatalytic CO2 reduction generates CO for carbonylative cross‐couplings to synthesize complex organic products, including a pharmaceutical. ABSTRACT Photosynthesis compartmentalizes reactions across the thylakoid membrane in vivo to upcycle CO2 into complex chemicals that are ...
Sampurna Mitra, David M. Vahey, Shannon A. Bonke, Erwin Reisner   +3 more
wiley   +2 more sources