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Updated: Jul 18, 2026

Photogeneration of N-Heterocyclic Carbenes: Application in Photoinduced Ring-Opening Metathesis Polymerization
Published on: November 29, 2018
Toroidal hopping of a single hole through the circularly-arrayed naphthyl groups in hexanaphthylbenzene cation
Vincent J Chebny1, Ruchi Shukla, Rajendra Rathore
1Department of Chemistry, Marquette University, P.O. Box 1881, Milwaukee, Wisconsin 53201-1881, USA.
Researchers synthesized a propeller-shaped molecule with six naphthyl groups. Its cation radical shows a charge-resonance transition, indicating electron transfer across the redox centers.
Area of Science:
- Organic Chemistry
- Supramolecular Chemistry
- Electrochemistry
Background:
- Dendritic molecules offer unique structural and electronic properties.
- Hexanaphthylbenzene derivatives are of interest for their potential redox activity.
Purpose of the Study:
- To synthesize a novel dendritic hexanaphthylbenzene derivative.
- To investigate the electronic and redox properties of this compound and its cation radical.
Main Methods:
- Synthesis of the dendritic hexanaphthylbenzene derivative.
- Cyclic voltammetry to study oxidation behavior.
- Laser-flash photolysis to generate and study the cation radical.
Main Results:
- Successful synthesis of a soluble, propeller-shaped hexanaphthylbenzene.
- Observation of multiple oxidation waves, indicating stepwise electron removal.
- Intense charge-resonance transition (>1600 nm) in the cation radical.
Conclusions:
- The molecule exhibits complex redox behavior due to its unique structure.
- A single hole can be delocalized over the six redox centers via electron hopping.
- This work contributes to the understanding of charge transport in dendritic systems.
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