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Book chapter
English

Cationic Triarylcarbenium Helicenes: Synthesis, Resolution, and Applications

PublisherWiley
Publication date2022-09-06
First online date2022-08-19
Abstract

Cationic [n]helicenes ( n = 4,5,6), based on bridged triarylmethylium skeletons, are highly stable carbenium ions, which can be stored as carbocations under air. Most of them are inert even in strongly alkaline aqueous solutions. These colorful dyes can be tuned electronically by changing their intrarim heteroatoms or by diverse regioselective additions of substituents (auxochromes). Fluorescence in the red to NIR is also afforded with moderate to excellent quantum yields and lifetimes up to 10 ns and above. Many applications, detailed herein, have been reported, thanks to their simple and flexible synthesis that yields helicenes with (very) high configurational and chemical stability and tailored optical and redox properties.

eng
Keywords
  • Bioimaging
  • Circularly polarized luminescence
  • Configurational stability
  • Dyes
  • Electrochemiluminescence
  • Helicenes
  • Large-scale chiral resolution
  • Late-stage functionalization
  • Red-NIR fluorescence
  • Stable radicals
  • Straightforward synthesis
  • Triarylmethylium carbocations
Research group
Citation (ISO format)
BOSSON, Johann et al. Cationic Triarylcarbenium Helicenes: Synthesis, Resolution, and Applications. In: Helicenes: Synthesis, Properties and Applications. [s.l.] : Wiley, 2022. p. 127–165. doi: 10.1002/9783527829415.ch4
Main files (1)
Book chapter (Accepted version)
accessLevelPrivate
Identifiers
ISBN9783527348107
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Technical informations

Creation09/12/2022 10:05:00 AM
First validation09/12/2022 10:05:00 AM
Update time03/16/2023 7:31:45 AM
Status update03/16/2023 7:31:44 AM
Last indexation02/01/2024 8:45:10 AM
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