@article {43452,
	title = {Proton-coupled electron transfer in a hydrogen-bonded charge transfer complex},
	journal = {Journal of Physical Chemistry B},
	volume = {120},
	year = {2016},
	month = {OCT},
	pages = {10780-10785},
	abstract = {A proton-coupled electron transfer (PCET) reaction in a hydrogen bonded charge-transfer (CT) complex of 4-([2,2{\textquoteright}-bipyridin]-4-yl)phenol (bpy-phenol) with a F- ion has been investigated by ultrafast time-resolved transient absorption spectroscopy. The phenolic receptor molecule, bpy-phenol, binds to the F- ion through a hydrogen bond and senses the F- ion-via the Stokes-shifted CT band. Upon photoexcitation, CT from the phenol residue to the bpy residue promotes proton transfer from the phenol radical cation (ArOH center dot+) to the fluoride ion at ultrafast time scales of <150 fs (instrument response function limited) and 3 ps, separately. The fast and slow proton-transfer times are linked to two different types of hydrogen-bonding networks between the phenol residue and fluoride ion. Crystalline water in the fluoride salt hydrates mediates the proton-transfer reaction. This work demonstrates the participation of a hydrogen-bonded water bridge within a PCET reaction in a water restricted environment.},
	doi = {10.1021/acs.jpcb.6b06032},
	author = {Verma, Sandeep and Aute, Sunil and Das, Amitava and Ghosh, Hirendra N.}
}
