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Search for "cumulenes" in Full Text gives 2 result(s) in Beilstein Journal of Nanotechnology.
Laser synthesis of nanoparticles in organic solvents – products, reactions, and perspectives
Beilstein J. Nanotechnol. 2024, 15, 638–663, doi:10.3762/bjnano.15.54
- elemental carbon is used as a source to form the initial polyyne fragments, fs-LAL reaches power densities that enable direct ionization and dissociation of the solvent, which may form ionized, short polyynes or cumulenes without intermediate steps. Short C4 polyynes have been observed by femtosecond laser
- mass spectrometry of irradiated organic solvents [117][119]. Long-chained polyynes, however, cannot be formed this way and, hence, require follow-up reactions of the short cumulenes [119][135][136][137]. The difference between the proposed mechanisms for ns-LAL and fs-LAL is that Tsuji et al. [132
Raman spectroscopy as a tool to investigate the structure and electronic properties of carbon-atom wires
Beilstein J. Nanotechnol. 2015, 6, 480–491, doi:10.3762/bjnano.6.49
- , atomic-scale wires comprised of sp-hybridized carbon atoms represent ideal 1D systems to potentially downscale devices to the atomic level. Carbon-atom wires (CAWs) can be arranged in two possible structures: a sequence of double bonds (cumulenes), resulting in a 1D metal, or an alternating sequence of
- electronic structure from alternating to equalized bonds. Keywords: carbon nanostructures; cumulenes; polyynes; Raman spectroscopy; sp-hybridized carbon systems; Review Introduction Over the last decades carbon nanostructures have been widely investigated for their unique properties and for their potential
- issues since the 1D atomic equalized structures tend to change into the alternating triple–single bond structures to reach a minimum energy configuration (i.e., due to the onset of a Peierls distortion). Such structural change has a direct effect on the electronic properties. Infinite cumulenes have one
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