Results 61 to 70 of about 1,117,391 (197)

Hydrogen Release From Silicon─Hydrogen Systems: From Surface Chemistry to Higher‐Coordinate Molecular Mechanisms

Chemistry – A European Journal, EarlyView.
Hydrogen‐release processes in silicon chemistry occur across a broad spectrum of systems, including crystalline silicon surfaces, nanoporous materials, Zintl phases, and molecular hydrides. This Review highlights how Si─H activation and H2 evolution are governed by structure, coordination environment, and dynamic access to reactive geometries, with ...
Robin Rothfelder, Jonathan O. Bauer
wiley   +1 more source

Synthesis and Reactivity of Oligo(ethylene glycol)-Tethered Morita–Baylis–Hillman Dimers in the Formation of Macrocyclic Structures Showing Remarkable Cytotoxicity

Pharmaceuticals
Background/Objectives: Crown ethers have received increasing interest owing to their ability to form stable complexes with cations. This molecular feature has been successfully exploited in the development of biologically relevant ionophores. Methods: In
Marco Paolino, Mario Saletti, Jacopo Venditti, Arianna Zacchei, Alessandro Donati, Claudia Bonechi, Germano Giuliani, Stefania Lamponi, Andrea Cappelli   +8 more
doaj   +1 more source

Persilylated and Related Silyl Anion‐Induced Synthesis of Group 3–10 Metal–Silyl Complexes

Chemistry – A European Journal, EarlyView.
Persilylated and related silyl anions serve as powerful tools for constructing metal–silyl complexes across group 3–10 elements. Their strong σ‐donating ability and steric bulk stabilize low‐coordinate, reactive species and enable unique bonding motifs.
Yusuke Sunada
wiley   +1 more source

Two‐Coordinate 13‐Electron PdI Complexes Stabilized by the Bulky DIMeIHeptCl NHC Ligand

Chemistry – A European Journal, EarlyView.
Bulky N‐heterocyclic carbene (NHC) ligand DiMeIHeptCl stabilizes rare two‐coordinate 13‐electron PdI species. These monomeric complexes are directly observed crystallographically and by electron paramagnetic resonance (EPR) spectroscopy, and display unusual structures and radical‐type reactivity, forming Pd0(NHC) via Pd─X bond homolysis or ...
Volodymyr Semeniuchenko, Sepideh Sharif, Neha Rana, Nalin Chandrasoma, Wilfried M. Braje, R. Tom Baker, Jeffrey M. Manthorpe, William J. Pietro, Michael G. Organ   +8 more
wiley   +1 more source

Regioisomerism Rewires Optical and Ion Recognition Properties in Azulenylsumanenes—Curved Non‐Alternant π‐Systems

Chemistry – A European Journal, EarlyView.
Regioisomerism rewires orbital topology and electronic polarity in curved non‐alternant π‐systems, switching both optical response and alkali metal ion recognition from Na+ to Rb+ selectivity. ABSTRACT Herein, we explore the fundamental concept of combining the molecular curvature of a molecular fragment of buckminsterfullerene with the pronounced ...
Jakub Cyniak, Anna Mazur, Bartłomiej Pigulski, Hidehiro Sakurai, Artur Kasprzak   +4 more
wiley   +1 more source

Counterion Effects in Decatungstate Photocatalysis

European Journal of Organic Chemistry, EarlyView.
Decatungstate photocatalysis is often discussed from an anion‐centered perspective, treating the counterion as a passive charge‐balancing species. This review highlights that counterion identity can instead profoundly influence catalyst solubility, ion pairing, aggregation, stability, substrate accessibility, and catalytic performance.
Florence Babawale, Burkhard König, Indrajit Ghosh   +2 more
wiley   +1 more source

Preparation and Performance Analysis of Anion Exchange Membranes Modified with Chromotropic Acid Grafted 18⁃Crown⁃6 Ether on Polyvinyl Alcohol

Liaoning Shiyou Huagong Daxue xuebao
The quaternary ammonium group (QA) commonly used in conventional anion exchange membranes (AEMs) has a low dissociation constant with OH-, resulting in poor conductivity. The crown ether group can significantly enhance the ion exchange capacity (IEC) and
Ningda ZHANG, Lulu WANG, Yang ZHANG, Fan ZHANG, Jilin WANG   +4 more
doaj   +1 more source

A study on the molecular complexes of crown ethers with polynitro fluorenones

, 2017
The interaction of four crown ethers, benzo-15-crown-5, dibenzo-18-crown-6, dicyclohexyl-18-crown-6 and dibenzo-24-crown-8 with three nitrofluorenones has been studied using electronic absorption, infrared, 1H NMR and 13C NMR spectral methods.
R. Malini, V. Krishnan
core   +1 more source

Crown ethers: novel permeability enhancers for ocular drug delivery? [PDF]

, 2017
Crown ethers are cyclic molecules consisting of a ring containing several ether groups. The most common and important members of this series are 12-crown-4 (12C4), 15-crown-5 (15C5), and 18-crown-6 (18C6).
Chahal, Sukhmanpreet, Porfiryeva, Natalia N., Sukhmanpreet Chahal, Porfiryeva, Natalia N, Peter W. J. Morrison, Morrison, Peter W.J., Lacourt, Charlene, Natalia N. Porfiryeva, Ilgiz A. Salakhov, Irina I. Semina, Salakhov, Ilgiz A., Semina, Irina I., Semina, Irina I, Rouslan I. Moustafine, Khutoryanskiy, Vitaliy V., Morrison, Peter, Vitaliy V. Khutoryanskiy, Moustafine, Rouslan I., Charlène Lacourt   +18 more
core   +1 more source

Nanophotonic Biosensors and the Paradigm of Trans‐Scale Autonomous Bio‐Integrated Diagnostics for Addressing Health Complexities

Electron, EarlyView.
Physics‐driven advances in optical nanobiosensors for rapid, miniaturized, and point‐of‐care diagnostics for next‐generation decentralized and personalized healthcare based on sensor intelligence. ABSTRACT Public health emergencies and the escalating burden of chronic diseases necessitate a paradigm shift from centralized laboratory testing to rapid ...
Vishal Chaudhary, Harsh Sable, Sonu Sonu, Lakshita Phor, Reddicherla Umapathi, Pradeep Bhadola   +5 more
wiley   +1 more source