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Cercosporin-Photocatalyzed [4+1]- and [4+2]-Annulations of Azoalkenes Under Mild Conditions
Published on: July 17, 2020
Seven Chromisms Associated with Dithizone
Lumanyano L A Ntoi1, Blenerhassitt E Buitendach1, Karel G von Eschwege1
1Department of Chemistry, University of the Free State , PO Box 339, Bloemfontein, 9300, South Africa.
Dithizone compounds exhibit remarkable color changes in response to seven stimuli, impacting solar energy and optoelectronics. These color shifts are linked to molecular changes like proton transfer or isomerization.
Area of Science:
- Molecular spectroscopy
- Materials science
- Photochemistry
Background:
- Molecular color variations are crucial for solar energy and optoelectronics.
- Dithizone and its derivatives are known for their vibrant color properties.
Purpose of the Study:
- To investigate the diverse color-changing responses of dithizone and its derivatives to various external stimuli.
- To explore the potential applications of these "colorful" compounds in energy conversion and information processing.
Main Methods:
- Cyclic voltammetry was used to study electrochromism.
- Concentratochromism, solvatochromism, halochromism, thermochromism, and chronochromism were investigated.
- Photochromism was examined in a specific mercury(II) complex.
Main Results:
- Dithizone compounds responded to at least seven external stimuli, causing significant color changes.
- Specific stimuli included electrochemical, concentration, solvent, halogen, temperature, time, and light.
- Color changes were consistently associated with proton transfer/loss or isomerization processes.
Conclusions:
- Dithizone derivatives display an exceptional range of stimuli-responsive color changes.
- These findings highlight the potential of dithizone-based materials for advanced applications in optoelectronics and solar energy conversion.
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