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Updated: Jun 2, 2026

Isolating Free Carbenes, their Mixed Dimers and Organic Radicals
Published on: April 19, 2019
Generation and spectroscopic profiles of stable multiarylaminium radical cations bridged by fluorenes
Chao-Che Chang1, Han Yueh, Chao-Tsen Chen
1Department of Chemistry, National Taiwan University, Taipei, Taiwan, ROC.
Abstract:
A series of arylaminofluorene derivatives (DTFA-1, TTFA-2, TAFB-3, and TAFA-4) were synthesized, and the generation of their corresponding arylaminium cation radicals was readily achieved by Cu(ClO(4))(2) in CH(3)CN. Moreover, the cation radicals were stable at ambient temperature with substantially long life times and exhibited distinct colors. The oxidation mechanism and spectroscopic features of the resulting cation radicals were probed by UV-vis-NIR spectroscopy and electron spin resonance experiments.
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