English   español  
Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/190630
Share/Impact:
Statistics
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Title

Azabora[5]helicene charge-transfer dyes show efficient and spectrally variable circularly polarized luminescence

AuthorsDomínguez, Zoe; López-Rodríguez, Rocío ; Álvarez, Eleuterio ; Abbate, Sergio; Longhi, Giovanna; Pischel, Uwe; Ros, Abel
KeywordsPush-pull chromophores
Circularly polarized luminescence
Circular dichroism
Helicene
Boron
Issue Date27-Aug-2018
PublisherJohn Wiley & Sons
CitationChemistry - a European Journal 24(48): 12660-12668 (2018)
AbstractThree helicenes based on a borylated arylisoquinoline skeleton have been prepared in their enantiopure forms and characterized with respect to their photophysical properties, including the use of chiroptical spectroscopies. The dyes show varying charge-transfer characteristics and efficient emission (quantum yields between 0.13 and 0.30, in toluene), which is governed by the electron-donor substitution (p-MeO-phenyl, p-MeN-phenyl) at the helicene. Marked differences in the emission wavelength and Stokes shift are observed, with the dimethylamino-substituted derivative emitting most red-shifted (maximum at ca. 590 nm) and displaying the highest Stokes shift (ca. 6000 cm) in toluene. The helicenes show electronic circular dichroism (ECD) and significant circularly polarized luminescence (CPL) with dissymmetry factors of up to 3.5×10. The sign of the ECD band corresponding to the first transition and of the CPL spectrum depend sensibly on the electron-donor substitution.
Publisher version (URL)https://doi.org/10.1002/chem.201801908
URIhttp://hdl.handle.net/10261/190630
DOI10.1002/chem.201801908
ISSN0947-6539
E-ISSN1521-3765
Appears in Collections:(IIQ) Artículos
Files in This Item:
File Description SizeFormat 
accesoRestringido.pdf15,38 kBAdobe PDFThumbnail
View/Open
Show full item record
Review this work
 

Related articles:


WARNING: Items in Digital.CSIC are protected by copyright, with all rights reserved, unless otherwise indicated.