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Selective switching of multiple azobenzenes.

ABSTRACT: Multi-state photoswitchable compounds are highly attractive for application in data storage or multi-responsive materials. In this work, a trisazobenzene macrocycle capable of three-state isomerization is presented. The compound can be switched into each of the states with more than 70% of the isomer solely by light and heat as stimuli representing the first example for an oligo-azobenzene containing identical photochromic units which can be selectively adressed. Detailed spectroscopic, crystallographic, HPLC as well as computational investigations and the comparison to a less and a higher strained derivative revealed macrocyclic ring strain to be responsible for the compounds unique isomerization behavior.

SUBMITTER: Heindl AH

PROVIDER: S-EPMC6713861 | biostudies-other | 2019 Aug

REPOSITORIES: biostudies-other

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Selective switching of multiple azobenzenes.

Heindl Andreas H AH Becker Jonathan J Wegner Hermann A HA

Chemical science 20190621 31

Multi-state photoswitchable compounds are highly attractive for application in data storage or multi-responsive materials. In this work, a trisazobenzene macrocycle capable of three-state isomerization is presented. The compound can be switched into each of the states with more than 70% of the isomer solely by light and heat as stimuli representing the first example for an oligo-azobenzene containing identical photochromic units which can be selectively adressed. Detailed spectroscopic, crystall ...[more]

PMID: 31489164

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