Results 81 to 90 of about 4,674,317 (310)

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

Recent Trends in Bioorthogonal Click-Radiolabeling Reactions Using Fluorine-18

Molecules, 2013
The increasing application of positron emission tomography (PET) in nuclear medicine has stimulated the extensive development of a multitude of novel and versatile bioorthogonal conjugation techniques especially for the radiolabeling of biologically ...
Doreen Pietzsch, Constantin Mamat, Marc Pretze   +2 more
doaj   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

Advanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu, Hsi‐wen Wu, Xiao Wang, Jie Zhang   +3 more
wiley   +1 more source

Crystal and molecular structure of potassium 18-crown-6-[2,6-bis(dimethylaminomethyl)phenyl]tin(IV) tetrafluoride

Main Group Metal Chemistry, 2011
The crystal structure of the title compound shows the [K(18-crown-6)]+ cation and [{2,6-(Me2NCH2)2C6H3}SnF4]– anion, which are held together through two potassium–fluorine and one potassium–tin electrostatic interaction.
Rotar Adina, Varga Richard A., Schürmann Markus, Silvestru Cristian, Jurkschat Klaus   +4 more
doaj   +1 more source

New methodology for the synthesis of fluorinated aromatics [PDF]

, 1990
This thesis is concerned with new methodology for the introduction of fluorine atoms, and trifluoromethyl groups into aromatic systems and the following approaches have been adopted: (i) The possibility of selective cleavage of the aryl-silicon bond of ...
Rock, Michael Harold
core  

Misconceptions on fluoronium ions and hypervalent fluorine cations

, 2017
In a recent publication (Science, 2013, 340, 57), indirect experimental evidence was presented for the transient generation in solution of a fluorine atom symmetrically bonded to two carbon atoms.
Christe, Karl O., Ralf Haiges, Monica Vasiliu, Martin Rahm, Rahm, Martin, Karl O. Christe, David A. Dixon, Rahm, Martin,, Haiges, Ralf, Dixon, David A., Vasiliu, Monica   +10 more
core   +1 more source

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

Advanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally, Paul L. Burn, Paul E. Shaw   +2 more
wiley   +1 more source

[¹⁸F]-Radiolabelled Nanoplatforms: A Critical Review of Their Intrinsic Characteristics, Radiolabelling Methods, and Purification Techniques

Molecules
A wide range of nano-objects is found in many applications of our everyday life. Recognition of their peculiar properties and ease of functionalization has prompted their engineering into multifunctional platforms that are supposed to afford efficient ...
Maëlle Deleuziere, Éric Benoist, Isabelle Quelven, Emmanuel Gras, Catherine Amiens   +4 more
doaj   +1 more source

Fluorine-Rich Zinc Oxoclusters as Extreme Ultraviolet Photoresists: Chemical Reactions and Lithography Performance

, 2022
The absorption of extreme ultraviolet (EUV) radiation by a photoresist strongly depends on its atomic composition. Consequently, elements with a high EUV absorption cross section can assist in meeting the demand for higher photon absorbance by the ...
Benjamin Watts, Sonia Castellanos, Stefano Nannarone, Nicola Mahne, Neha Thakur, Angelo Giglia (1539457), Albert M. Brouwer, Michaela Vockenhuber (11587553), Stefano Nannarone (1747318), Michaela Vockenhuber, Yasin Ekinci (1818751), Angelo Giglia, Neha Thakur (704057), Yasin Ekinci, Nicola Mahne (10776039), Benjamin Watts (1777558), Albert M. Brouwer (1656577), Sonia Castellanos (1884592)   +17 more
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

Advanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source