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Updated: Jan 25, 2026

Proton Transfer and Protein Conformation Dynamics in Photosensitive Proteins by Time-resolved Step-scan Fourier-transform Infrared Spectroscopy
Published on: June 27, 2014
Anthracene-based azo dyes for photo-induced proton-coupled electron transfer
Amanda N Oldacre1, Craig A Pointer1, Shea M Martin1
1Department of Chemistry, Lehigh University, Bethlehem, Pennsylvania 18015, USA. ery317@lehigh.edu.
Abstract:
Herein, we report a new donor-acceptor system for photo-induced proton-coupled electron transfer (PCET) that leverages an azo linkage as the proton-sensitive component and anthracene as a photo-trigger. Electrochemistry shows a change in the reduction potential with addition of acid. However, photochemistry is invariant to the absence or presence of acid. The anthracene and phenol/4-methoxyphenyl moieties of the azo dyes are highly conjugated, likely mitigating photo-induced charge transfer, despite sufficient driving force.
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