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Excimer-origin CPL vs. monomer-origin magnetic CPL in photo-excited chiral binaphthyl-ester-pyrenes: critical role of ester direction

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Abstract

Two chiral binaphthyl (BNp) derivatives bearing oppositely oriented ester linkers to two pyrene (Py) moieties [(R)/(S)-1 and (R)/(S)-2] enabled Py-origin circularly polarized luminescence (CPL), magnetic CPL (MCPL), and circular dichroism (CD). (R)-1 that exhibited (−)-sign CD showed (+)-sign Py-excimer CPL but did not exhibit MCPL. Conversely, (R)-2, with (−)-sign CD, did not show excimer-origin CPL, but exhibited clear Py-monomer MCPL.

Graphical abstract: Excimer-origin CPL vs. monomer-origin magnetic CPL in photo-excited chiral binaphthyl-ester-pyrenes: critical role of ester direction

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Article information


Submitted
25 Apr 2020
Accepted
20 May 2020
First published
20 May 2020

Phys. Chem. Chem. Phys., 2020, Advance Article
Article type
Communication

Excimer-origin CPL vs. monomer-origin magnetic CPL in photo-excited chiral binaphthyl-ester-pyrenes: critical role of ester direction

H. Okada, N. Hara, D. Kaji, M. Shizuma, M. Fujuiki and Y. Imai, Phys. Chem. Chem. Phys., 2020, Advance Article , DOI: 10.1039/D0CP02215B

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