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A wide-range of redox states of core-modified expanded porphyrinoids
- Source :
- Chemical communications (Cambridge, England). 55(47)
- Publication Year :
- 2019
-
Abstract
- Core-modified hexaphyrin and octaphyrin display four- and six-electron reversible redox reactions respectively, to alternate between aromatic and anti-aromatic states of a given macrocycle. We have identified and isolated a hexaphyrin in three discrete states with 26π, 28π and 30π electrons that are inter-convertible with each other. Its higher congener, octaphyrin, can exist as four discrete species with 34π, 36π, 38π and 40π electrons. A difference of two-electrons between each stable redox state is reflected by the significant variation in their electronic and structural properties as characterized in both solution and solid states. The observed redox inter-conversions were achieved by a combination of both proton coupled electron-transfer (PCET) and electron-transfer (ET) processes respectively.
- Subjects :
- Range (particle radiation)
Proton
010405 organic chemistry
Chemistry
Metals and Alloys
General Chemistry
Electron
010402 general chemistry
Photochemistry
01 natural sciences
Redox
Catalysis
0104 chemical sciences
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Core (optical fiber)
Materials Chemistry
Ceramics and Composites
Subjects
Details
- ISSN :
- 1364548X
- Volume :
- 55
- Issue :
- 47
- Database :
- OpenAIRE
- Journal :
- Chemical communications (Cambridge, England)
- Accession number :
- edsair.doi.dedup.....cebfc5fd7a56950d0a67a747c8228bbc