Results 181 to 190 of about 81,435 (262)

Measurement of Stable Carbon Isotope Ratio of Volatile Organic Compounds Using Thermal Desorption-Gas Chromatography-Combustion-Isotope Ratio Mass Spectrometry. [PDF]

Int J Anal Chem
Yuhong L, Xihuang L, Cifu L, Xijie Y.
europepmc   +1 more source

Site‐Specific Molecular Engineering Redirects Radical Pathways for Selective Photocatalytic Coupling of Methane to C2+ Hydrocarbons

Angewandte Chemie, EarlyView.
Site‐specific self‐assembly of alkyl thiols on Au/TiO2 enables precise modulation of interfacial electron distribution and the local microenvironment through covalent Au‐thiolate interactions. This site‐specific molecular engineering synergistically promotes surface kinetics and charge separation, suppressing ·O2−‐driven overoxidation and thereby ...
Yaru Shao, Wanying Guo, Wei Li, Gaoyu Cui, Huijie Cheng, Lingfeng Zhu, Liqun Ye, Zihan Qiu, Yu Shan, Rui Li, Tianyi Ma, Jungang Hou   +11 more
wiley   +1 more source

Identification of Synthetic Urine by Analysis of Stable Carbon and Nitrogen Isotope Ratios and Comparison to Established GC-MS/MS and LC-MS/MS Analysis. [PDF]

Drug Test Anal
Hülsemann F, Franke L, Wissenbach DK, Fußhöller G, Thevis M.   +4 more
europepmc   +1 more source

Modulating Covalent Organic Framework Nanochannel Microenvironments for Sustainable Hydrogen Peroxide Photosynthesis

Angewandte Chemie, EarlyView.
Alkoxy side chains regulate hydrazone‐linked COF nanochannel microenvironments by tuning pore polarity, reactant adsorption, and charge‐separation behavior. The optimized framework facilitates oxygen activation and hydrogen peroxide photosynthesis in real water and a 1 L natural‐sunlight reactor. LCA further shows that natural sunlight and larger‐scale
Ruixue Sun, Shaoyang Gao, Luqiao Feng, Peixuan Xie, Wenyu Shen, Nikita Rog, Marwan Mohammed, Qi Huang, Giulio Santori, Xianfeng Fan, Bien Tan, Cher Hon Lau   +11 more
wiley   +1 more source

Multi-Isotope Internal Standardization for Inductively Coupled Plasma Mass Spectrometry

ACS Omega
Micah X. DeCourcey, Abigail J. Crossman, Willis B. Jones   +2 more
doaj   +1 more source

Effect of Laboratory Reagents for Cleaning Modern Contamination on the δ¹⁵N Integrity of Nitrogen-Poor Samples. [PDF]

Rapid Commun Mass Spectrom
Bubphamanee K, Schauer A, Buick R.
europepmc   +1 more source

Maximizing Active Site Density in Tin Single‐Site Catalysts for Selective Carbon Dioxide to Formate Electroreduction

Angewandte Chemie, EarlyView.
High‐loading tin single‐site catalysts (>7.5 wt.% Sn) are synthesized using a nitrogen‐enriched carbon scaffold and mechanochemically assisted pyrolysis to stabilize atomically dispersed Sn. The resulting Sn/N‐C‐M catalyst enables highly selective CO2‐to‐formate conversion (>90% FE across 50–500 mA cm−2) with long‐term durability and operando‐verified ...
Katharina Potemkin, Soressa Abera Chala, Chia‐Yu Chang, Keseven Lakshmanan, Meng‐Che Tsai, Tobias Rios Studer, Elnaz Ebrahimi, Nico Achenbach, Rongji Liu, Johannes Biskupek, Ute Kaiser, Bing Joe Hwang, Carsten Streb   +12 more
wiley   +1 more source

Accumulation of 13C-labeled phosphatidylethanolamine in the termite abdomen revealed by correlative isotope microscopy and mass microscopy. [PDF]

Microscopy (Oxf)
Ferdous R, Rahman MM, Sakamoto T, Islam MS, Maniruzzaman M, Islam MM, Rahman MF, Omagari R, Al Mamun M, Islam A, Aramaki S, Hirayama S, Sato T, Takahashi Y, Kahyo T, Sakamoto N, Yurimoto H, Matsuura K, Setou M.   +18 more
europepmc   +1 more source

Synthesis of Ladder and Flexible Polysulfonimides Directly From Anionic Monomers: Investigating Structure–Property Convergence in Succinonitrile–Polymer Electrolyte Blends

Angewandte Chemie, EarlyView.
Direct synthesis of sulfonimide‐based polymers of intrinsic microporosity enables comparison with compositionally similar flexible analogs. Incorporation of a common pore‐filling transport medium drives these fundamentally different polymer architectures toward similar bulk conductivity and mechanical properties while revealing distinct microscopic ion‐
Abraham Herzog‐Arbeitman, Pablo Leon, Benedikt S. Schreib, KyuJung Jun, Jurgis Ruza, Vanesa Munoz Perales, Yang Shao‐Horn, Rafael Gomez‐Bombarelli, Jeremiah A. Johnson   +8 more
wiley   +1 more source