Molecular Quantum Rings Formed from a π -Conjugated Macrocycle

The electronic structure of a molecular quantum ring (stacks of 40-unit cyclic porphyrin polymers) is characterized via scanning tunneling microscopy and scanning tunneling spectroscopy. Our measurements access the energetic and spatial distribution of the electronic states and, utilizing a combinat...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2020-11, Vol.125 (20), p.206803-206803, Article 206803
Main Authors: Judd, Chris J., Nizovtsev, Anton S., Plougmann, Rikke, Kondratuk, Dmitry V., Anderson, Harry L., Besley, Elena, Saywell, Alex
Format: Article
Language:English
Subjects:
Circumferences
Density functional theory
Electron states
Electronic structure
Molecular structure
Polymers
Porphyrins
Spatial distribution
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The electronic structure of a molecular quantum ring (stacks of 40-unit cyclic porphyrin polymers) is characterized via scanning tunneling microscopy and scanning tunneling spectroscopy. Our measurements access the energetic and spatial distribution of the electronic states and, utilizing a combination of density functional theory and tight-binding calculations, we interpret the experimentally obtained electronic structure in terms of coherent quantum states confined around the circumference of the π-conjugated macrocycle. These findings demonstrate that large (53 nm circumference) cyclic porphyrin polymers have the potential to act as molecular quantum rings.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.125.206803