Results 111 to 120 of about 404,745 (264)

Deprotonation and Alkylation of Weakly Acidic C(sp3)─H Bonds Through In Situ Generation of a Strong Hydride Base From 1,1,3,3‐Tetramethyldisiloxane and Potassium tert‐Butoxide

Angewandte Chemie, EarlyView.
The use of 1,1,3,3‐tetramethyldisiloxane (TMDSO) and potassium tert‐butoxide enables direct alkylation of weakly acidic carbon–hydrogen bonds with alkyl halides. Experimental and computational studies support the formation of a substrate‐associated hydride‐like base, providing a single‐step alternative to the classical deprotonation and electrophile ...
Piers St. Onge, Brandon White, Han Yao, Travis Dudding, Stephen G. Newman   +4 more
wiley   +2 more sources

A Compact Hollow Fiber Electrode Assembly Architecture for Continuous Electrochemical Marine Carbon Dioxide Removal

Advanced Energy Materials, EarlyView.
A coaxial, membrane‐integrated hollow fiber electrode assembly (HFEA) is developed for continuous marine carbon mineralization. By utilizing a sub‐millimeter inter‐electrode gap, the HFEA minimizes Ohmic losses, achieving 50% energy reduction and over 85% DIC removal.
Inhwan Park, Young Hun Lee, Jung Hun Lee, Seung‐Jeong Oh, T. Alan Hatton, Dong‐Yeun Koh   +5 more
wiley   +1 more source

Borylcyclopropanes: Synthetic Strategies and Applications

Angewandte Chemie, EarlyView.
Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley   +2 more sources

The Effect of Iodine in Various Forms on the Content of Selected Essential Amino Acids and Their Accumulation into the Broilers Chest Muscles

Scientific Papers Animal Science and Biotechnologies, 2023
The aim of this study was comparison of a biological effectiveness of iodized oil premix and potassium iodide premix applied in feed mixtures on the protein value and selected essential amino acids content of broiler chickens meat.
Mária Angelovičová, Ľubica Mrázová, Martin Kliment, Jana Tkačová, Martin Král, Ebrahim Alfaig   +5 more
doaj  

Selenocyanate Driven Organic Cations Homogenization in Wide‐Bandgap Perovskite

Advanced Energy Materials, EarlyView.
Selenocyanate pseudohalide doping stabilizes 1.66 eV wide‐bandgap formamidinium (FA)‐based perovskite lattices via strong FA+ hydrogen bonding and matched ionic radii. Uniform cation distribution and suppressed ion migration reduces defect losses, delivering >24% single‐junction efficiency and 32.66% perovskite/silicon tandem performance with ...
Zhi‐Wen Gao, Jun Fang, Yehui Wen, Longbin Qiu, Jiajia Zhang, Yong Wang, Wallace C. H. Choy   +6 more
wiley   +1 more source

Remapping the Synthetic Landscape of α‐Tertiary Alkylamines via Dual‐Functional Catechol

Angewandte Chemie, EarlyView.
A three‐component assembly strategy has been developed for the modular synthesis of hindered α‐tertiary aliphatic amines from readily available precursors through unlocking the dual role of catechol. The practicality of this methodology has been demonstrated in over 90 examples, including compounds that are otherwise difficult to access, along with ...
Chen‐Yan Cai, Yuzuru Kanda, Tian Qin
wiley   +2 more sources

In Vivo Nb4C3Tx MXene‐Assisted Photothermal Therapy of Melanoma in Mice

Advanced NanoBiomed Research, EarlyView.
Nb4C3Tx MXene converts pulsed 1064 nm irradiation into localized heat, producing concentration‐ and time‐dependent melanoma cell killing in vitro and suppressing tumor growth in mice. Histology reveals extensive tumor damage, macrophage‐associated material clearance, and no detectable persistent deposits in examined visceral organs, supporting Nb4C3Tx ...
Anton Roshchupkin, Benjamin Chacon, Gulnaz Gahramanova, Inna Chorna, Zhanna Klishchova, Anastasia Konieva, Ilya Yanko, Andrii Liutyi, Milena Yalyzhko, Ivan Baginskiy, Veronika Zahorodna, Júlio Sílvio de Sousa Bueno Filho, Erfan Rezvani Ghomi, Igor Panko, Tetiana Shapochka, Oksana Sulaieva, Oleksandr Solodovnyk, Lucia Gemma Delogu, Oleksiy Gogotsi, Laura Fusco, Sergiy Kyrylenko, Yury Gogotsi, Maksym Pogorielov   +22 more
wiley   +1 more source

Dissipative Regenerative Chemiluminescence in Water: A Perylene‐Based Out‐of‐Equilibrium Light‐Emitting System

Angewandte Chemie, EarlyView.
Driven by sodium dithionite and hydrogen peroxide under mild aqueous conditions, a water‐soluble perylene bisimide undergoes reversible electron‐transfer cycles that generate its emissive excited state without dye decomposition. We define this out‐of‐equilibrium system as chemically fueled regenerative chemiluminescence (CFRCL), opening new avenues for
Luca Morgan, Chiara Alberoni, Dario Alessi, Daniel Morales‐Martinez, Sara Bonacchi, Alessandro Aliprandi   +5 more
wiley   +2 more sources

Determination of Iodides and Bromides in Associated Produced Groundwater by the Visual Test Method

Ekológia (Bratislava)
A technique has been developed for the semiquantitative visual determination of iodide and bromide ions in their simultaneous presence in highly mineralized produced waters from oil and gas condensate fields.
Nikitina Nataliia, Reshetnyak Olena, Nemets Natalia, Chernyshova Oksana, Lukovykova Polina   +4 more
doaj   +1 more source

Iodine prophylaxis in pregnant women: a comparativeanalysis of different methods efficacy in conditions of goiter endemia

Терапевтический архив, 2003
Aim. To assess efficacy of different methods of iodine prophylaxis in pregnant women living in conditions of goiter endemia. Material and methods. Standard clinical, laboratory and device tests for iodine deficiency according to WHO criteria were made in
Е F Turovinina, L A Suplotova, E В Khramova, S A Smetanina   +3 more
doaj