Photoswitching of an intramolecular chiral stack in a helical tetrathiazole

On-off photoswitching of circularly polarized luminescence was achieved using a pyrene-bearing helical tetrathiazole, in which two pyrene fluorophores stack in a chiral fashion (folded state). The pyrene-excimer based CPL was reversibly controlled by a geometrical change of the tetrathiazole upon ph...

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Bibliographic Details
Published in:Chemical communications (Cambridge, England) England), 2016-04, Vol.52 (29), p.5171-5174
Main Authors: Hashimoto, Yuichiro, Nakashima, Takuya, Shimizu, Daiya, Kawai, Tsuyoshi
Format: Article
Language:English
Subjects:
Chemical compounds
Circularity
Fluorescence
Fluorescent Dyes - chemistry
Helical
Light
Luminescence
Pyrenes
Pyrenes - chemistry
Spectrometry, Fluorescence
Stacks
Stereoisomerism
Thiazoles - chemistry
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Summary:On-off photoswitching of circularly polarized luminescence was achieved using a pyrene-bearing helical tetrathiazole, in which two pyrene fluorophores stack in a chiral fashion (folded state). The pyrene-excimer based CPL was reversibly controlled by a geometrical change of the tetrathiazole upon photoisomerization. A chiroptical photoswitch based on a tetrathiazole is prepared, which demonstrates dynamic modulation of circularly polarized luminescence from a pyrene excimer.
ISSN:1359-7345
1364-548X
DOI:10.1039/c6cc01277a