Stereochemical and Steric Control of Photophysical and Chiroptical Properties in Bichromophoric Systems

Stereochemical and Steric Control of Photophysical and Chiroptical Properties in Bichromophoric... Stereochemical and steric control of the relative spatial arrangement of the chromophoric units in multichromophoric systems offers an interesting strategy for raising unusual and appealing light‐induced emission states. To explore and exploit this strategy, a series of conformationally restricted boron–dipyrromethene (BODIPY) dimers were designed by using tartaric acid as a symmetrical connector between the boron atoms of the dyes. The variety of stereoisomeric forms available for this bis(hydroxy acid) allows the relative spatial orientation of the chromophoric units in the dimer to be modified, which thus opens the door to modulation of the photophysical and chiroptical properties of the new bichromophoric systems. Chromophore alkylation introduces an additional level of control through distance‐dependent steric interactions between the BODIPY units in the dimer, which also modulates their relative spatial disposition and properties. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemistry - A European Journal Wiley

Stereochemical and Steric Control of Photophysical and Chiroptical Properties in Bichromophoric Systems

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Publisher
Wiley Subscription Services, Inc., A Wiley Company
Copyright
© 2018 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim
ISSN
0947-6539
eISSN
1521-3765
D.O.I.
10.1002/chem.201705698
Publisher site
See Article on Publisher Site

Abstract

Stereochemical and steric control of the relative spatial arrangement of the chromophoric units in multichromophoric systems offers an interesting strategy for raising unusual and appealing light‐induced emission states. To explore and exploit this strategy, a series of conformationally restricted boron–dipyrromethene (BODIPY) dimers were designed by using tartaric acid as a symmetrical connector between the boron atoms of the dyes. The variety of stereoisomeric forms available for this bis(hydroxy acid) allows the relative spatial orientation of the chromophoric units in the dimer to be modified, which thus opens the door to modulation of the photophysical and chiroptical properties of the new bichromophoric systems. Chromophore alkylation introduces an additional level of control through distance‐dependent steric interactions between the BODIPY units in the dimer, which also modulates their relative spatial disposition and properties.

Journal

Chemistry - A European JournalWiley

Published: Jan 12, 2018

Keywords: ; ; ; ;

References

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