Sun, Qiang; Mateo, Luis M.; Robles, Roberto; Lorente, Nicolas; Ruffieux, Pascal; Bottari, Giovanni; Torres, Tomás; Fasel, Roman (2021). Bottom‐up Fabrication and Atomic‐Scale Characterization of Triply Linked, Laterally π‐Extended Porphyrin Nanotapes**. Angewandte Chemie (International ed.), 60(29), pp. 16208-16214. Wiley-VCH 10.1002/anie.202105350
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Angew_Chem_Int_Ed_-_2021_-_Sun_-_Bottom_up_Fabrication_and_Atomic_Scale_Characterization_of_Triply_Linked_Laterally_.pdf - Published Version Available under License Creative Commons: Attribution (CC-BY). Download (1MB) | Preview |
Porphyrin nanotapes (Por NTs) are highly promising structures for their use as molecular wires thanks to their high degree of π‐conjugation, low HOMO‐LUMO gaps, and exceptional conductance. Such structures have been repeatedly reported in solution‐based approaches, but their on‐surface synthesis, which allows an atomically‐resolved characterization, remains unreported to this date. Here, we report the first example of meso‐meso triply‐fused Por NTs, which are prepared from a readily available Por precursor through a two‐step synthesis on Au(111). The diradical character of the on‐surface formed building block PorA2, a phenalenyl π‐extended ZnIIPor, facilitates intermolecular homocoupling and allows for the formation of laterally π‐extended tapes. The structural and electronic properties of individual Por NTs are addressed, both on Au(111) and on a thin insulating NaCl layer, by high‐resolution scanning probe microscopy/spectroscopy complemented by density functional theory calculations. Remarkably, the triply‐linked, laterally π‐extended Por NTs carry one unpaired electron at each end, which leads to magnetic end states. Our study provides an alternative and versatile route to the fabrication of Por NTs and the atomic‐scale characterizations of their structural and electronic properties.
Item Type: |
Journal Article (Original Article) |
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Division/Institute: |
08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP) |
UniBE Contributor: |
Fasel, Roman |
Subjects: |
500 Science > 530 Physics 500 Science > 540 Chemistry |
ISSN: |
1433-7851 |
Publisher: |
Wiley-VCH |
Language: |
English |
Submitter: |
Roman Fasel |
Date Deposited: |
17 Feb 2022 09:50 |
Last Modified: |
05 Dec 2022 16:05 |
Publisher DOI: |
10.1002/anie.202105350 |
PubMed ID: |
33960097 |
BORIS DOI: |
10.48350/164870 |
URI: |
https://boris.unibe.ch/id/eprint/164870 |
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