Results 61 to 70 of about 7,970 (195)

Thermally Activated Delayed Fluorescence: An Extended Study of Peripherally Substituted DMAC‐TRZ Analogues

Chemistry – A European Journal, EarlyView.
A comprehensive experimental and theoretical study is presented of a family of TADF dyes. Comparing the behavior of structurally related dyes, we uncover the subtle and somewhat unexpected role of conformational degrees of freedom associated with peripheral groups that affect the delicate interplay of excited states that governs spin–orbit coupling ...
Andrea Landi, Ottavia Racchi, D. K. Andrea Phan Huu, Shohei Fukushima, Katsuaki Suzuki, Hironori Kaji, Cristina Sissa, Anna Painelli   +7 more
wiley   +1 more source

From Charge‐Transfer Adducts to (Tri)Halide‐Templated Supramolecular Cages: Covalent vs Ionic Products in the Reactions of Pyridin‐4‐ylthio‐Substituted Tetrathiafulvalene With Dihalogens and Interhalogens

Chemistry – A European Journal, EarlyView.
The reactions between tetra(pyridin‐4‐ylthio)tetrathiafulvalene and Br2/I2/ICl/IBr led to a variety of products, including a rare example of neutral 1:4 CT adduct and ionic products showing supramolecular cage motifs at (tri)halide templates. The nature of the reaction products was elucidated based on XRD analysis, Raman spectroscopy and QTAIM, NCI ...
Anna Caria, Stéphane A. Baudron, M. Carla Aragoni, Vito Lippolis, Anna Pintus, Enrico Podda, Massimiliano Arca   +6 more
wiley   +1 more source

Design of a Virtual Sensor Data Array for the Analysis of RDX, HMX and DMNB Using Metal-Doped Screen Printed Electrodes and Chemometric Analysis

International Journal of Electrochemical Science, 2013
The detection of explosive substances is a subject of high importance in several areas including environmental health, de-mining efforts (land and sea) and security and defence against terrorist activity.
Rebeca Jimenez-Perez, Mark Baron, LeonieElie, Jose-Gonzalez Rodriguez   +3 more
doaj   +1 more source

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo, Vincenzo Patamia, Chiara Zagni, Antonio Rescifina, Giuseppe Floresta   +4 more
wiley   +1 more source

Nitrogen‐Site Isomerism Unlocks Exciton Dissociation in Vinylene‐Linked COF‐Based Photocatalysts

EcoEnergy, EarlyView.
Two regioisomeric vinylene‐linked covalent organic frameworks (COFs) constructed from diazine units with different nitrogen positions are developed for photocatalytic hydrogen evolution reaction (HER). Although structurally similar, the isomeric COFs exhibit distinct electron distribution and charge‐separation behaviors, leading to a more than twofold ...
Ming Wang, Zhongliang Wen, Chengbo Zhang, Wei Wang, Yaling Li, Xiaofang Su, Rached Ousji, Yanqiong Luo, Muhammad Imran Anwar, Rengui Li, Yanan Gao   +10 more
wiley   +1 more source

A Self‐Enhanced Tandem Catalytic System for Olefin‐to‐Diol Conversion Powered by Single‐Atom Fe Catalysts With In Situ Generated Acid

EcoEnergy, EarlyView.
A single‐atom iron catalyst with well‐defined Fe–N4 sites enables a tandem epoxidation‐hydrolysis process for converting terminal olefins to 1,2‐diols. The in situ‐generated isobutyric acid drives the hydrolysis step, affording broad substrate scope and excellent recyclability.
Tao‐Tao Liu, Shuai‐Long Yang, Xiao‐Hui Huang, Jun Liang, Peng‐Chao Shi, Rui Xu, Yuan‐Biao Huang, Rong Cao   +7 more
wiley   +1 more source

Counter‐ion modulation: A facile approach toward quenching‐resistant multi‐resonance emitters for efficient narrowband electroluminescence

FlexMat, EarlyView.
Quenching‐resistant carbocation‐based multi‐resonance emitters are developed via a facile counter‐ion modulation strategy, giving much narrowed emission bands under high doping concentrations, and greatly improved device efficiency for solution‐processed narrowband OLEDs by simply increasing the size of counter ions.
Tao Li, Guimin Zhao, Yuanyuan Li, Zhihua Ma, Zhicai Chen, Fangfang Huang, Ronghao Yang, Wei Jiang, Xin Ai, Shiyang Shao   +9 more
wiley   +1 more source

Synthesis of Functional Materials Using N‐heterocyclic Amines Beyond Melamine

Advanced Science
Melamine, a nitrogen‐rich heterocycle with a 1,3,5‐triazine core and three exocyclic amines, has played a central role in materials chemistry, enabling the synthesis of supramolecular assemblies, covalent organic polymers, and carbon nitride ...
Jesús Barrio, Arne Thomas
doaj   +1 more source

Evolution of Interatomic and Intermolecular Interactions and Polymorphism of Melamine at High Pressure

Crystals, 2018
Melamine (C3H6N6; 1,3,5-triazine-2,4,6-triamine) is an aromatic substituted s-triazine, with carbon and nitrogen atoms forming the ring body, and amino groups bonded to each carbon.
Hannah Shelton, Przemyslaw Dera, Sergey Tkachev   +2 more
doaj   +1 more source

Chemical Kinetics of 2‐, 4‐, and 2,4‐Seleno‐Uracils at Low Temperatures: Tautomerizations and Rotamerizations on Inert Matrices

International Journal of Chemical Kinetics, EarlyView.
ABSTRACT In the interstellar medium, chemical reactions proceed under conditions vastly different to those on Earth; these include extremely low temperatures and densities and take place in the gas phase and on water–ice grains. Understanding the energetics and more importantly the kinetics of such reactions is of relevance to the consequences on how ...
Judith Wurmel, John M. Simmie
wiley   +1 more source