Title
Circularly polarized luminescence from helically chiral N,N,O,O-Boron-chelated dipyrromethenes Circularly polarized luminescence from helically chiral N,N,O,O-Boron-chelated dipyrromethenes
Author
Faculty/Department
Faculty of Sciences. Chemistry
Publication type
article
Publication
Weinheim ,
Subject
Chemistry
Source (journal)
Chemistry: a European journal. - Weinheim
Volume/pages
22(2016) :1 , p. 93-96
ISSN
0947-6539
ISI
000368897600008
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Helically chiral N,N,O,O-boron chelated dipyrromethenes showed solution-phase circularly polarized luminescence (CPL) in the red region of the visible spectrum (lambda(em)(max) from 621 to 663 nm). The parent dipyrromethene is desymmetrised through O chelation of boron by the 3,5-ortho-phenolic substituents, inducing a helical chirality in the fluorophore. The combination of high luminescence dissymmetry factors (vertical bar g(lum)vertical bar up to 4.7 x 10(-3)) and fluorescence quantum yields (Phi(F) up to 0.73) gave exceptionally efficient circularly polarized red emission from these simple small organic fluorophores, enabling future application in CPL-based bioimaging.
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Full text (open access)
https://repository.uantwerpen.be/docman/irua/5d3a30/131590.pdf
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