Molecular Quantum Rings Formed from a π -Conjugated Macrocycle

Chris J. Judd, Anton S. Nizovtsev, Rikke Plougmann, Dmitry V. Kondratuk, Harry L. Anderson, Elena Besley, Alex Saywell

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

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Аннотация

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.

Язык оригиналаанглийский
Номер статьи206803
Число страниц6
ЖурналPhysical Review Letters
Том125
Номер выпуска20
DOI
СостояниеОпубликовано - 13 ноя 2020

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