Epitaxial composite layers of electron donors and acceptors from very large polycyclic aromatic hydrocarbons (Articolo in rivista)

Type

• Prodotto della ricerca (Classe)
• Articolo in rivista (Classe)

Label

• Epitaxial composite layers of electron donors and acceptors from very large polycyclic aromatic hydrocarbons (Articolo in rivista) (literal)

Anno

• 2002-01-01T00:00:00+01:00 (literal)

Alternative label

• Samorì P., Severin N., Simpson C., Mullen K., Rabe J.P. (2002)
  Epitaxial composite layers of electron donors and acceptors from very large polycyclic aromatic hydrocarbons
  in Journal of the American Chemical Society (Print)
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Samorì P., Severin N., Simpson C., Mullen K., Rabe J.P. (literal)

Pagina inizio

• 9454 (literal)

Pagina fine

• 9457 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 124 (literal)

Rivista

• Journal of the American Chemical Society (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#descrizioneSinteticaDelProdotto

• Uno studio STM ha permesso di evidenziare che nanografeni non funzionalizzati di dimensione ragguardevole possono esser processati da soluzioni in strutture cristalline e che tali strutture possono esser visualizzate con una risoluzione submolecolare. Cio' ha evidenziato che i livelli elettronici di frontiera dell' adsorbato vengono fortemente perturbati dall' interazione con il substrato sottostante di grafite. (literal)

Note

• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• ISOF-CNR Bologna Max Planck Institute for Polymer Research, Mainz, Germania Dipartimento di Fisica, Humboldt University Berlin, Germania (literal)

Titolo

• Epitaxial composite layers of electron donors and acceptors from very large polycyclic aromatic hydrocarbons (literal)

Abstract

• Large polycyclic aromatic hydrocarbons (PAHs) can be considered as nanographenes, whose electron donating or accepting properties are controlled by their size and shape as well as functionalities in their periphery. Epitaxial thin films of them are targets for optoelectronic applications; however, large PAHs are increasingly difficult to process. Here we show that epitaxial layers of very large unsubstituted PAHs (C42H18 and C132H34), as well as a mixed layer of C42H18 with an electron acceptor, can be obtained by self-assembly from solution. The C132H34 is by far the largest nanographene that up to now has been processed into ordered thin films; due to its size it cannot be sublimed in a vacuum. Scanning tunneling microscopy (STM) studies reveal that the interaction with the substrate induces a strong perturbation of the electronic structure of the pure donor in the first epitaxial monolayer. In a second epitaxial layer with a donor acceptor stoichiometry of 2:1 the molecules are unperturbed. (literal)

Prodotto di

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)

Autore CNR

• PAOLO SAMORI' (Unità di personale interno)

Insieme di parole chiave

• Keywords of "Epitaxial composite layers of electron donors and acceptors from very large polycyclic aromatic hydrocarbons" (Insieme di parole chiave)

Incoming links:

Prodotto

• Institute for organic syntheses and photoreactivity (ISOF) (Istituto)

Autore CNR di

• PAOLO SAMORI' (Unità di personale interno)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of the American Chemical Society (Rivista)

Insieme di parole chiave di

• Keywords of "Epitaxial composite layers of electron donors and acceptors from very large polycyclic aromatic hydrocarbons" (Insieme di parole chiave)