Long, Atomically Precise Donor-Acceptor Cove-Edge Nanoribbons as Electron Acceptors.
J Am Chem Soc
; 139(16): 5648-5651, 2017 04 26.
Article
em En
| MEDLINE
| ID: mdl-28418665
ABSTRACT
This Communication describes a new molecular design for the efficient synthesis of donor-acceptor, cove-edge graphene nanoribbons and their properties in solar cells. These nanoribbons are long (â¼5 nm), atomically precise, and soluble. The design is based on the fusion of electron deficient perylene diimide oligomers with an electron rich alkoxy pyrene subunit. This strategy of alternating electron rich and electron poor units facilitates a visible light fusion reaction in >95% yield, whereas the cove-edge nature of these nanoribbons results in a high degree of twisting along the long axis. The rigidity of the backbone yields a sharp longest wavelength absorption edge. These nanoribbons are exceptional electron acceptors, and organic photovoltaics fabricated with the ribbons show efficiencies of â¼8% without optimization.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Idioma:
En
Revista:
J Am Chem Soc
Ano de publicação:
2017
Tipo de documento:
Article
País de afiliação:
Estados Unidos