Controlling the rate of electron transfer between a quantum dot and a tri-ruthenium molecular cluster by tuning the chemistry of the interface

Physical Chemistry Chemical Physics : PCCP
Adam J Morris-CohenEmily A Weiss

Abstract

Ultrafast transient absorption measurements reveal that the rate of photoinduced electron transfer (PET) from colloidal CdSe quantum dots (QDs) to oxo-centered triruthenium clusters (Ru(3)O) depends on the structure of the chemical headgroup by which the Ru(3)O clusters adsorb to the QDs. Complexes comprising QDs and Ru(3)O clusters adsorbed through a pyridine-4-carboxylic acid ligand (nic-Ru(3)O) have an intrinsic PET rate constant of (4.9 ± 0.9) × 10(9) s(-1) whereas complexes comprising QDs and Ru(3)O clusters adsorbed through a 4-mercaptopyridine ligand (thiol-Ru(3)O) have an intrinsic PET rate constant of (36 ± 7) × 10(9) s(-1). Cyclic voltammetry measurements of nic-Ru(3)O and thiol-Ru(3)O yield reduction potentials vs. Ag/AgCl of -0.93 V for both clusters, and density functional theory calculations of the nic-Ru(3)O and thiol-Ru(3)O clusters yield internal reorganization energies for the cluster radical anion of -0.17 eV and -0.19 eV, respectively. The small differences in driving force and reorganization energy between the two complexes rule out these parameters as possible explanations for the factor-of-seven difference in the rate constants for PET. The difference in the observed rates of PET for the two complexes is ...Continue Reading

References

Aug 3, 2006·Journal of the American Chemical Society·Milan SykoraVictor I Klimov
Apr 9, 2008·Journal of the American Chemical Society·Jier HuangTianquan Lian
Dec 18, 2008·Chemical Society Reviews·Eric E BensonJonathan M Smieja
Nov 23, 2010·Journal of the American Chemical Society·John C Goeltz, Clifford P Kubiak
Jun 23, 2011·Journal of the American Chemical Society·Brandon R GalanClifford P Kubiak

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Citations

May 1, 2013·Chemical Reviews·Alexey V AkimovOleg V Prezhdo
Apr 17, 2014·The Journal of Chemical Physics·Andrew M RasmussenTamar Seideman
Dec 25, 2013·Annual Review of Physical Chemistry·Mark D PetersonEmily A Weiss
May 25, 2016·Annual Review of Physical Chemistry·Haiming ZhuTianquan Lian
Aug 9, 2016·Chemical Reviews·Rachel D HarrisEmily A Weiss
Oct 9, 2015·Physical Chemistry Chemical Physics : PCCP·Kalpna JainLavanya M Ramaniah
Oct 26, 2016·Dalton Transactions : an International Journal of Inorganic Chemistry·Mariete B MoreiraSofia Nikolaou
May 8, 2015·Physical Chemistry Chemical Physics : PCCP·Manas R ParidaOmar F Mohammed
Dec 7, 2014·Journal of Materials Chemistry. B, Materials for Biology and Medicine·W Russ AlgarIgor L Medintz
Aug 19, 2015·The Journal of Physical Chemistry Letters·Svetlana KilinaSergei Tretiak
Aug 19, 2014·ACS Nano·Carolyn N ValdezJames M Mayer
Dec 17, 2014·The Journal of Physical Chemistry. B·Jane HendersonClifford P Kubiak

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