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Updated: May 12, 2026

Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch
Published on: February 7, 2022
Molecular photoswitches based on spiro-acridans
Alina Raskosova1, Reinhard Stösser, Werner Abraham
1Humboldt-Universität zu Berlin, Institute for Chemistry, Brook-Taylor-Str. 2, D-12489 Berlin, Germany.
Abstract:
Thermally reversible photochromic spiro-acridans have been synthesized for the first time. They exhibit high ring opening efficiencies. As the formed zwitterions do not possess a merocyanine structure their lifetime is in the range of milliseconds to seconds. An observed side reaction can be avoided by suitable substitution of hydrogen atoms.
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