Results 91 to 100 of about 226,914 (312)

Synthesis of Unsymmetrical Urea Derivatives via PhI(OAc)₂ and Application in Late-Stage Drug Functionalization

Molecules
Unsymmetrical urea derivatives are essential structural motifs in a wide array of biologically significant compounds. Despite the well-established methods for synthesizing symmetrical ureas, efficient strategies for the synthesis of unsymmetrical urea ...
Subban Kathiravan, Prakriti Dhillon, Tianshu Zhang, Ian A. Nicholls   +3 more
doaj   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source

Synthesis of functionalized 2-pyridones via Michael addition and cyclization reaction of amines, alkynes and dialkyl acetylene dicarboxylates

, 2013
The Michael addition and three-component cyclization reaction of amines, alkynes and dialkyl acetylene dicarboxylates to form pyridones has been developed.
Wu, Fan, Wan, Boshun, Chong, Qinglei, 万伯顺, Xin, Xiaoyi, Wang, Chunxiang   +5 more
core   +1 more source

Photoreduction of imines. An environmentally friendly approach to obtain amines [PDF]

, 2005
The photoreduction of different imines to amines in alcoholic solvents is reported. The reduction involves a versatile and chemoselective methodology that is environmentally friendly in that it avoids the use of metal hydrides and other dangerous ...
Rodríguez, M.A. [0000-0003-0123-9905], Campos, P.J. [0000-0002-8917-0318], Ortega, M., Rodríguez, M.A., Campos, P.J.   +4 more
core   +1 more source

Reaction‐Time pH Stabilization by Poly(acrylic acid) with Ethanol‐Mediated Growth Control for Efficient Hydrothermal Sb2(S,Se)3 Solar Cells

Advanced Functional Materials, EarlyView.
Poly(acrylic acid) acts as a reaction‐time pH buffer during hydrothermal Sb2(S,Se)3 growth through its COOH/COO‐ equilibrium. When combined with ethanol‐regulated growth, this buffering strategy reduces Sb‐O related surface disorder, improves local electronic uniformity and carrier collection, and increases the champion solar‐cell efficiency to 10.25%,
Juhee Lee, Geumha Lim, Wookyung Jeon, Seongju Park, Jinwoo Chu, Yohan Yoon, William Jo, Byungha Shin   +7 more
wiley   +1 more source

A Preliminary in-vitro Evaluation of Serum Capped Colloidal Silver Nanoparticles on Liver Cancer towards Development of Safe Personalized Nanomedicine

International Journal of Nanomedicine
Rehana Parveen,1,* Prasanta Kumar Maiti,1,* Mohammed M Arab,2 Sajad Ahmad Dar,3 Nabendu Murmu,4 Arshad Jawed31Department of Microbiology, Institute of Post-Graduate Medical Education and Research, Kolkata, 700020, India; 2Department of ...
Parveen R, Maiti PK, Arab MM, Dar SA, Murmu N, Jawed A   +5 more
doaj  

Chemical Composition of Aerosol over the Arctic Ocean from Summer ARctic EXpedition (AREX) 2011–2012 Cruises: Ions, Amines, Elemental Carbon, Organic Matter, Polycyclic Aromatic Hydrocarbons, n-Alkanes, Metals, and Rare Earth Elements

Atmosphere, 2019
During the summers of 2011 and 2012, two scientific cruises were carried out over the Arctic Ocean aiming at the determination of the aerosol chemical composition in this pristine environment.
Luca Ferrero, Giorgia Sangiorgi, Maria Grazia Perrone, Cristiana Rizzi, Marco Cataldi, Piotr Markuszewski, Paulina Pakszys, Przemysław Makuch, Tomasz Petelski, Silvia Becagli, Rita Traversi, Ezio Bolzacchini, Tymon Zielinski   +12 more
doaj   +1 more source

The Effect of Hydrophilic Headgroup Chemistry on Peptoid‐Directed Mineralization of CaCO3

Advanced Functional Materials, EarlyView.
Amphiphilic peptoids alter the pathway and outcome of calcium carbonate crystallization, which progresses through amorphous calcium carbonate (ACC) to vaterite to calcite rhombs in the absence of peptoids. In contrast, amine‐terminated peptoids produce vaterite disks and carboxyl‐terminated peptoids produce calcite mesocrystals.
Biao Jin, Chunhui Wu, Thi Kim Hoang Trinh, Wenhao Zhou, Chun‐Long Chen, James J De Yoreo   +5 more
wiley   +1 more source

Easy Access to N,N-Bis(but-3-enyl)-, N-Allyl-N-(but-3-enyl)-, and N-(But-3-ynyl)-N-(but-3-enyl)-amines

, 2016
N,N-Bis(but-3-enyl)amines 5a−i were prepared in overall 74% yield from 1-(triphenylphosphoroylideneaminoalkyl)benzotriazole using an aza-Wittig reaction with aldehydes followed by a double Grignard reaction with allylmagnesium bromide.
Alina Silina (1695580), Alan R. Katritzky (455231), Satheesh K. Nair (2718808)   +2 more
core   +1 more source

Nanoamphizymes: Self‐Assembled Amphiphilic Enzymatic Nanomaterials for High‐Performance Biocatalysis and Biosensing

Advanced Functional Materials, EarlyView.
An amphiphilic GOx nanoamphizyme was constructed by covalently introducing hydrophobic PPNI linkers onto GOx, enabling spontaneous self‐assembly into tunable nanoparticles. Mild crosslinking further stabilized the assemblies and enhanced catalytic performance and stability.
Yuan‐Hao Hsiao, Rajan Deepan Chakravarthy, Po‐Hsiang Chen, Abdelreheem Abdelfatah Saddik, Hsin‐Chieh Lin   +4 more
wiley   +1 more source