Por favor, use este identificador para citar o enlazar a este item:
http://hdl.handle.net/10261/19687COMPARTIR / EXPORTAR:
 SHARE
 CORE
BASE
|
|
| Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL | DATACITE | |
| Campo DC | Valor | Lengua/Idioma |
|---|---|---|
| dc.contributor.author | Barberá, Joaquín | - |
| dc.date.accessioned | 2009-12-18T09:44:41Z | - |
| dc.date.available | 2009-12-18T09:44:41Z | - |
| dc.date.issued | 2006-03-29 | - |
| dc.identifier.citation | The Journal of Physical Chemistry B 110(15): 7653–7659 (2006) | en_US |
| dc.identifier.issn | 0002-7863 | - |
| dc.identifier.uri | http://hdl.handle.net/10261/19687 | - |
| dc.description | 7 pages, 6 figures, 2 tables, 2 schemes.-- et al. | en_US |
| dc.description.abstract | A concept for highly ordered solid-state structures with bright fluorescence is proposed: liquid crystals based on tetraethynylpyrene chromophores, where the rigid core is functionalized with flexible, promesogenic alkoxy chains. The synthesis of this novel material is presented. The thermotropic properties are studied by means of differential scanning calorimetry (DSC), cross-polarized optical microscopy (POM), and X-ray diffraction. The mesogen possesses an enantiotropic Colh phase over a large temperature range before clearing. The material is highly fluorescent in solution and, most remarkably, in the condensed state, with a broad, strongly red shifted emission. Fluorescence quantum yields (ΦF) have been determined to be 70% in dichloromethane solution and 62% in the solid state. Concentration- and temperature-dependent absorption and emission studies as well as quantum-chemical calculations on isolated molecules and dimers are used to clarify the type of intermolecular interactions present as well as their influence on the fluorescence quantum yield and spectral properties of the material. The high luminescence efficiency in the solid state is ascribed to rotated chromophores, leading to an optically allowed lowest optical transition. | en_US |
| dc.description.sponsorship | This work was financially supported by the Belgian National Science Foundation (FNRS- FRFC no. 2.4608.04, FNRS “crédit aux chercheurs” no. 1.5.074.00), Université Libre de Bruxelles, Banque Nationale de Belgique, Communauté Francüaise de Belgique (ARC no. 00/05-257), and European Union (DISCEL G5RD-CT-2000-00321). V.d.H. and J.T. acknowledge FRIA for a fellowship. A.K. thanks the Royal Society and Peterhouse for financial support. J.C. is a FNRS research fellow. | en_US |
| dc.format.extent | 69120 bytes | - |
| dc.format.mimetype | application/msword | - |
| dc.language.iso | eng | en_US |
| dc.publisher | American Chemical Society | en_US |
| dc.rights | closedAccess | en_US |
| dc.title | Highly fluorescent crystalline and liquid crystalline columnar phases of pyrene-based structures | en_US |
| dc.type | artículo | en_US |
| dc.identifier.doi | 10.1021/jp0573689 | - |
| dc.description.peerreviewed | Peer reviewed | en_US |
| dc.relation.publisherversion | http://dx.doi.org/10.1021/jp0573689 | en_US |
| dc.type.coar | http://purl.org/coar/resource_type/c_6501 | es_ES |
| item.openairetype | artículo | - |
| item.grantfulltext | none | - |
| item.cerifentitytype | Publications | - |
| item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
| item.fulltext | No Fulltext | - |
| item.languageiso639-1 | en | - |
| Aparece en las colecciones: | (ICMA) Artículos | |
Ficheros en este ítem:
| Fichero | Descripción | Tamaño | Formato | |
|---|---|---|---|---|
| accesoRestringido.pdf | 15,38 kB | Adobe PDF |  Visualizar/Abrir |
CORE Recommender
SCOPUSTM
Citations
162
checked on 18-abr-2024
WEB OF SCIENCETM
Citations
151
checked on 23-feb-2024
Page view(s)
378
checked on 23-abr-2024
Download(s)
108
checked on 23-abr-2024
Google ScholarTM
Check
Altmetric
Altmetric
NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.