Results 61 to 70 of about 4,629,960 (206)

On‐Surface Friedel–Crafts Alkylation Through a Stabilized Intermediate Complex

Angewandte Chemie International Edition, EarlyView.
On‐surface Friedel–Crafts alkylation is demonstrated on Ag(111) at the single‐molecule level. STM, XPS, and DFT calculations uncover the reaction mechanism and explain the stabilization of the key intermediate, providing insight into noble‐metal‐surface‐mediated Csp3${\rm C}_{sp^{3}}$─Csp2${\rm C}_{sp^{2}}$ coupling. ABSTRACT The incorporation of sp3${\
Paul Schweer, Christoph J. Vonnemann, Nishanth Arumugam, Stefan M. Huber, Daniel P. Miller, Karina Morgenstern   +5 more
wiley   +1 more source

Electrochemical Aspects of a Nitrogen-Doped Pseudo-Graphitic Carbon Material: Resistance to Electrode Fouling by Air-Aging and Dopamine Electro-Oxidation

C, 2020
The nitrogen-doped form of GUITAR (pseudo-Graphite from the University of Idaho Thermalized Asphalt Reaction) was examined by X-ray photoelectron, Raman, and X-ray diffraction spectroscopies and cyclic voltammetry (CV).
Kailash Hamal, Jeremy May, Haoyu Zhu, Forrest Dalbec, Elena Echeverria, David N. McIlroy, Eric Aston, I. Francis Cheng   +7 more
doaj   +1 more source

Nucleation and growth of poly(3,4-ethylenedioxythiophene) thin films on highly oriented pyrolytic graphite (HOPG) electrodes

Electrochemistry Communications, 2008
Abstract The electro-polymerization of 3,4-ethylenedioxythiophene (EDOT) on highly oriented pyrolytic graphite (HOPG) in aqueous media has been investigated by current–time transient measurements and atomic force microscopy. Deposition involved an initial step, in which the whole electrode was essentially covered with an increasing number of nuclei ...
Edgar Ventosa, Jesús López Palacios, Patrick R. Unwin   +2 more
openaire   +1 more source

Electrochemistry at highly oriented pyrolytic graphite (HOPG): lower limit for the kinetics of outer-sphere redox processes and general implications for electron transfer models [PDF]

Physical Chemistry Chemical Physics, 2015
Electron transfer kinetics for outer-sphere redox couples is fast on the basal surface of highly oriented pyrolytic graphite (HOPG).
Guohui Zhang, Anatolii S. Cuharuc, Aleix G. Güell, Patrick R. Unwin   +3 more
openaire   +2 more sources

Two‐Dimensional van der Waals Antiferromagnets: Fabrication, Probes, Control, and Applications

Advanced Physics Research, EarlyView.
Two‐dimensional van der Waals antiferromagnets are emerging as versatile platforms for spintronic, optoelectronic, and quantum devices. This review summarizes recent progress in their fabrication, magnetic characterization, fields, interfacial engineering, chemical modification, and representative applications.
Huangyu Wu, Zeyu Han, Yueyao Wang, Yitao Yu, Mingyang Yin, Yikang Jin, Yongjun Huo, Lihong Gao, Zhuang Ma, Gang Zhang, Miao Jiang   +10 more
wiley   +1 more source

Electrochemical oxidation of dihydronicotinamide adenine dinucleotide (NADH): comparison of highly oriented pyrolytic graphite (HOPG) and polycrystalline boron-doped diamond (pBDD) electrodes [PDF]

Physical Chemistry Chemical Physics, 2016
NADH electro-oxidation is faster, but more prone to fouling, at HOPG compared to pBDD.
Maddar, Faduma, Lazenby, Robert A., Patel, Anisha N., Unwin, Patrick R.   +3 more
openaire   +2 more sources

Niobium‐Based Chalcogenides as Emerging Electrode Materials for Rechargeable Batteries

EcoEnergy, EarlyView.
This review highlights recent advances in Nb‐based TMCs, covering their structure‐property relationships, synthesis strategies, electrochemical mechanisms, and energy‐storage applications. Emerging approaches including defect engineering, operando characterization, DFT modeling, and AI‐assisted design are discussed to accelerate the development of high‐
Narasimharao Kitchamsetti, Ana L. F. de Barros, Sungwook Mhin, HyukSu Han   +3 more
wiley   +1 more source

Patterning of highly oriented pyrolytic graphite by oxygen plasma etching

, 1999
Patterning of highly oriented pyrolytic graphite (HOPG) was demonstrated by oxygen plasma etching of lithographically patterned substrates. Periodic arrays of islands, or holes of several microns on an edge, were obtained on freshly cleaved HOPG surfaces
Nikolay Nemchuk, Xuekun Lu, Lu, XK, Hui Huang, Rodney S. Ruoff, Huang, H, Ruoff, RS, Nemchuk, N   +7 more
core   +1 more source

An X‑Shaped Chiral Non‑Fullerene n‐Type Semiconductor: Application in Perovskite Solar Cells and Chirality‑Induced Spin Selectivity

Angewandte Chemie, Volume 138, Issue 43, 19 October 2026.
A highly electron‑accepting derivative of cyclobisbiphenylenecarbonyl (CBBC‐TIC) is reported. CBBC‐TIC functions as an electron‐transport layer for perovskite solar cells, achieving a power conversion efficiency of 20.6%. Furthermore, the enantiomers of CBBC‐TIC exhibited spin‐selective electron transport with high enantiospecific magnetic conductance ...
Yuki Sakamoto, Koki Otsuka, Kuraudo Ishihara, Shuang Li, Ai Shimazaki, Megumi Haramatsu, Junichiro Hirano, Juntaro Nogami, Hiroshi Shinokubo, Hiroki Uratani, Hironori Kaji, Fumitaka Ishiwari, Akinori Saeki, Tomoya Nakamura, Atsushi Wakamiya, Norihito Fukui   +15 more
wiley   +2 more sources

Electrochemistry of Fe ^3+/2+ at highly oriented pyrolytic graphite (HOPG) electrodes: kinetics, identification of major electroactive sites and time effects on the response [PDF]

Physical Chemistry Chemical Physics, 2016
Electron transfer kinetics of Fe 3+/2+ on HOPG is as fast as on metals, with the electroactivity dominated by basal plane.
Guohui Zhang, Sze-yin Tan, Anisha N. Patel, Patrick R. Unwin   +3 more
openaire   +2 more sources