Abstract
New electron-accepting oxygen-bridged triphenylamines were synthesized with nitro and dimesitylboryl substituents. Using optical and electrochemical characterization, the effect of electron-withdrawing substituents on quasi-planar triarylamine skeletons was clarified. Compared with the unbridged nitro-substituted triphenylamine reference, the oxygen-bridged structure featured a smaller optical gap, shifting the absorption and fluorescence wavelengths to longer wavelengths. Structural relaxation in the electronically excited state was suppressed, and the Stokes shift was reduced. Replacing the nitro substituent with a dimesitylboryl group resulted in an increase in the fluorescence quantum yield due to the suppression of the vibronic coupling.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
