%0 Journal Article
%A Tian, Xiaoqi
%A Shoyama, Kazutaka
%A Mahlmeister, Bernhard
%A Brust, Felix
%A Stolte, Matthias
%A Wuerthner, Frank
%T Naphthalimide-Annulated [ n ]Helicenes: Red Circularly Polarized Light Emitters
%J Journal of the American Chemical Society
%V 145
%N 17
%@ 0002-7863
%C Washington, DC
%I ACS Publications
%M PUBDB-2023-05265
%P 9886 - 9894
%D 2023
%Z DFG Grant WU 317/20-2, DFG Projektnummer 444286426  
%X Two [n]heliceno-bis(naphthalimides) 1 and 2 (n = 5 and 6, respectively) where two electron-accepting naphthalimide moieties are attached at both ends of helicene core were synthesized by effective two-step strategy, and their enantiomers could be resolved by chiral stationary-phase high-performance liquid chromatography (HPLC). The single-crystal X-ray diffraction analysis of enantiopure fractions of 1 and 2 confirmed their helical structure, and together with experimental and calculated circular dichroism (CD) spectra, the absolute configuration was unambiguously assigned. Both 1 and 2 exhibit high molar extinction coefficients for the S<sub>0</sub>–S<sub>1</sub> transition and high fluorescence quantum yields (73
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 37083394
%U <Go to ISI:>//WOS:000981137300001
%R 10.1021/jacs.3c03441
%U https://bib-pubdb1.desy.de/record/593081