The excited-state acid-base chemistry of dye molecules was first observed by Weber in 1931 and has since been exploited for practical applications, such as pH sensors, solar-fuel production, biological probes, molecular switches, as well as for fundamental studies or proton transfer and/or proton/coupled electron transfer (PCET) reactions. In this work, we’ve demonstrated that the transition metal compounds shown that contain a carboxylic acid group can behave as photo-acids or photo-bases through synthetic design and excited-state localization. Kinetic analysis of the photoluminescence data provided rate constants for excited-state proton transfer reactions. In addition, the kinetically determined pKa&lt;font size="1"&gt;<sup>*</sup> &lt;/font&gt;values were compared with those extracted from steady-state analysis and found to be in good agreement providing a clear blue print for excited-state proton-transfer equilibrium determination.

Excited-state proton transfer in transition metal compounds

255th National Meeting (2018)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.