نتایج جستجو برای: nanographene

تعداد نتایج: 237  

Journal: :Angewandte Chemie International Edition 2018

2010
Reginald B. Little

Strong dense many-spin interactions have been proposed to organize novel orbital dynamics (the Little Effect) for novel chemical and catalytic phenomena. The recent determinations of the relativistic and quantum Hall effects of carriers in graphene under strong magnetic confinement have substantiated the Little Effect. Moreover such nonclassical phenomena under the stronger magnetic confinement...

2017
Johannes Holzwarth Konstantin Yu Amsharov Dmitry I Sharapa David Reger Kateryna Roshchyna Dominik Lungerich Norbert Jux Frank Hauke Timothy Clark Andreas Hirsch

Hexa-peri-hexabenzocoronides (HBC) was successfully used as a model system for investigating the complex mechanism of the reductive functionalization of graphene. The well-defined molecular HBC system enabled deeper insights into the mechanism of the alkylation of reductively activated nanographenes. The separation and complete characterization of alkylation products clearly demonstrate that na...

Journal: :Angewandte Chemie International Edition 2015

Journal: :Journal of polymer science 2022

Klaus Müllen's works cover a broad range of science, ranging from NMR/ESR spectroscopy or electrochemistry to polymer and nanoscience. After the Chemistry diploma in 1969 (early work with Emanuel Vogel/Cologne University), he received his doctorate 1971 at University Basel (working Fabian Gerson) on investigations bridged annulenes. During postdoctoral period ETH Zurich Jean François Michel Oth...

Journal: :Journal of Raman Spectroscopy 2021

We report a detailed investigation by Raman spectroscopy of the holey nanographene C216, hexagon-shaped disk with armchair edges (1.4 nm long), from which central aromatic ring is missing. Density functional theory (DFT) calculations allow to assign main features spectra that have been recorded several excitation wavelengths. In spectra, we observe signatures hole in structure, G and D modes, a...

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