Results 171 to 180 of about 169,803 (413)

Chemical characterization of liquefaction products of an inertinite enriched northern Alaska coals [PDF]

, 1989
A Northern Alaskan coal rich in inertinites was further enriched by density gradient separations. The degree of condensation of the enriched coal was estimated to be low, mainly 3 ring.
Mayasandra, Venugopal
core  

Ligand Engineering of Co‐N4 Single‐Atom Catalysts for Highly‐Active and Stable Acidic Oxygen Evolution

Advanced Science, EarlyView.
This study highlights the effects of metal – ligand distance on d electron structure and orbital configuration of single atom catalysts (SACs) and their corresponding oxygen evolution reaction (OER) catalytic activity and stability based on the ligand engineering.
Taeyoung Jeong, Kiwon Kim, Byung‐Hyun Kim, Sang‐Il Choi, Chang Hyuck Choi, Joonhee Kang, Myeongjin Kim   +6 more
wiley   +1 more source

Hybrid hetarylhydrazones and enamines of Furan-2(3H)-ones as a framework for the synthesis of poly-N-heterocycles

Arabian Journal of Chemistry, 2021
Substituted furan-2(3H)-ones can act as platform compounds to obtain easily various functionalized derivatives as well as heterocycles with different heteroatoms patterns.
Oksana A. Mayorova, Vyacheslav S. Grinev, Alevtina Yu. Yegorova   +2 more
doaj  

3-Phenyl-3-benzoborepin, a carbon-boron heterocycle with aromatic character [PDF]

, 1967
A.J. Leusink, W. Drenth, J. G. NOLTES, G. J. M. van der Kerk   +3 more
openalex   +1 more source

Synthesis of pyrrolo[1,2-a]indole-1,8(5H)-diones as new synthons for developing novel tricyclic compounds of pharmaceutical interest [PDF]

, 2004
In the course of our work aimed at developing novel heterocycles of pharmaceutical interest, a new tricycle, the tetrahydropyrrolo[1,2-a]indole-1,8-dione, has been synthesized by an intramolecular Friedel-Crafts acylation, as a synthon suitable to be ...
Mura, Alessio, Orecchioni, Maria, Paglietti, Giuseppe, Sannia, Luciano, Sechi, Mario   +4 more
core  

Squaraine Dyes for Organic Photomultiplication Photodetectors with 220% External Quantum Efficiency at 1240 nm

Advanced Science, EarlyView.
The synthesis of a range of squaraine dyes is reported with maximum absorption in solution above 1100 nm. Near‐infrared sensitive organic photomultiplication photodetectors are developed. Photomultiplication occurs via squaraine hole trap‐induced injection of electrons from the external circuit.
Joshua Csucker, Elodie Didier, João Pedro Ferreira Assunção, Daniel Rentsch, Radha Kothandaraman, Dominik Bachmann, Ivan Shorubalko, Frank Nüesch, Roland Hany, Michael Bauer   +9 more
wiley   +1 more source

The Ring Opening of Aromatic O-Heterocycles by Sodium in Pyridine. [PDF]

, 1966
Jarl Gripenberg, Tapio Hase, Eivor Holmberg, Marc Wagnières, D. H. Williams, E. Bunnenberg, Carl Djerassi, Ruth Records   +7 more
openalex   +1 more source

Linear Polymer Cathode Materials for Highly Efficient Aqueous Zinc‐Ion Batteries: Is the High Active Sites Density Necessary?

Advanced Science, EarlyView.
Two linear polymers with uniformly distributed electron clouds to verify the necessary of high‐density active sites, which enable extremely high active site utilization of 85.7%, thus resulting in superb high specific capacity of 618 mAh g−1 at 1 A g−1 and energy density of 678.62 Wh kg−1 in ZnSO4 and ZnI2 mixture electrolyte.
Yiyang Dai, Yao Yao, Liang Feng, Zhenglong Qiu, Min Deng, Qiang Peng   +5 more
wiley   +1 more source

Selectfluor-mediated regioselective nucleophilic functionalization of N-heterocycles under metal- and base-free conditions

, 2018
A practical and environmentally attractive methodology for the direct diversification of N-heterocycles at ambient temperature under open-air conditions was developed.
Long-Yong Xie, J. Qu, Sha Peng, Kaijian Liu, Z. Wang, Man-Hua Ding, Yi Wang, Zhong Cao, Wei-Min He   +8 more
semanticscholar   +1 more source

Simultaneous Multi‐Resonant Thermally Activated Delayed Fluorescence and Room Temperature Phosphorescence from Biluminescent Nitrogen‐Containing Indolocarbazoles

Advanced Science, EarlyView.
An extremely rare type of organic biluminescent emission is reported that consists of delayed emission resulting from both the fluorescence (multi‐resonance thermally activated delayed fluorescence) and phosphorescence spectra at room temperature, and the lifetimes of the two processes exhibit opposing dependence with temperature.
Oliver S. Lee, Aidan P. McKay, David B. Cordes, Stuart L. Warriner, Malte C. Gather, Eli Zysman‐Colman   +5 more
wiley   +1 more source