Abstract
The bulky para substituent of bisphenol A (1) restricts rotation around the C4−C7 bond in the phenol, phenoxide, and phenoxyl radical. This hindered rotation is responsible for modulation of the hyperfine interaction between the unpaired electron and the meta protons on the phenoxyl ring. The modulation manifests itself in the time-resolved electron paramagnetic resonance (TREPR) spectrum of the bisphenol A phenoxyl radical as selective broadening of certain transitions. Line widths of the broadened transitions of the bisphenoxyl A TREPR spectrum at different temperatures were obtained by simulation of the TREPR spectra, and an energy barrier of 6.2 ± 1 kcal mol-1 for this rotation was estimated using a simple two-state model for rotation around the C4−C7 bond.
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.
