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Updated: Jun 6, 2026

Determination of the Photoisomerization Quantum Yield of a Hydrazone Photoswitch
Published on: February 7, 2022
Oligoazobenzenes--switching in a new dimension
Raphael Reuter1, Nik Hostettler, Markus Neuburger
1University of Basel, Department of Chemistry, St Johanns-Ring 19, CH-4056, Basel.
A novel synthesis of cyclotrisazobenzene derivatives was achieved, yielding up to 30%. The study explored their solid-state structures, photochromic properties, and metal ion complexation behavior.
Area of Science:
- Organic Chemistry
- Supramolecular Chemistry
- Materials Science
Background:
- Cyclotrisazobenzene derivatives are nitrogen-rich heterocyclic compounds with potential applications.
- Understanding their synthesis and properties is crucial for developing new functional materials.
Purpose of the Study:
- To develop a new synthetic route for substituted cyclotrisazobenzene.
- To characterize the solid-state structures of these compounds.
- To investigate their photochromic properties and complexation behavior with alkali metal ions.
Main Methods:
- New synthetic methodologies for cyclotrisazobenzene derivatives.
- Single-crystal X-ray diffraction for structural analysis.
- Spectroscopic and photochemical techniques to study photochromism.
- Binding studies to investigate alkali metal ion complexation.
Main Results:
- Successful synthesis of cyclotrisazobenzene with various substituents, achieving yields up to 30%.
- Determination of solid-state structures for cyclotrisazobenzene and its tert-butyl derivative.
- Investigation revealed photochromic properties and complexation behavior with alkali metal ions.
Conclusions:
- The developed synthesis provides access to a new class of functional cyclotrisazobenzene molecules.
- The structural and property investigations lay the groundwork for future applications in materials science and sensing.
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