2026-08-22T00:38:01Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1203172025-05-21T23:52:57Zcom_20.500.14352_14col_20.500.14352_15

00925njm 22002777a 4500 dc Jover, Óscar author Martín Jiménez, Alberto author Franklin, Hannah M. author Koenig, Ryan M. author Martínez, José I. author Martín León, Nazario author Lauwaet, Koen author Miranda, Rodolfo author Gallego, José M. author Stevenson, Steven author Otero, Roberto author 2023-10-23 Fullertubes, that is, fullerenes consisting of a carbon nanotube moiety capped by hemifullerene ends, are emerging carbon nanomaterials whose properties show both fullerene and carbon nanotube (CNT) traits. Albeit it may be expected that their electronic states show a certain resemblance to those of the extended nanotube, such a correlation has not yet been found or described. Here it shows a scanning tunneling microscopy (STM) and spectroscopy (STS) characterization of the adsorption, self-assembly, and electronic structure of 2D arrays of [5,5]-C90 fullertube molecules on two different noble metal surfaces, Ag(111) and Au(111). The results demonstrate that the shape of the molecular orbitals of the adsorbed fullertubes corresponds closely to those expected for isolated species on the grounds of density functional theory calculations. Moreover, a comparison between the electronic density profiles in the bands of the extended [5,5]-CNT and in the molecules reveals that some of the frontier orbitals of the fullertube molecules can be described as the result of the quantum confinement imposed by the hemifullerene caps to the delocalized band states in the extended CNT. The results thus provide a conceptual framework for the rational design of custom fullertube molecules and can potentially become a cornerstone in the understanding of these new carbon nanoforms. Jover, Ó.; Martín‐Jiménez, A.; Franklin, H. M.; Koenig, R. M.; Martínez, J. I.; Martín, N.; Lauwaet, K.; Miranda, R.; Gallego, J. M.; Stevenson, S.; Otero, R. Nanotube‐Like Electronic States in [5,5]‐C90 Fullertube Molecules. Small 2024, 20 (9), 2307611. https://doi.org/10.1002/smll.202307611. 1613-6810 10.1002/smll.202307611 https://hdl.handle.net/20.500.14352/120317 1613-6829 https://doi.org/10.1002/smll.202307611 https://onlinelibrary.wiley.com/doi/10.1002/smll.202307611 Nanotube-Like Electronic States in [5,5]-C90 Fullertube Molecules