Control of the Redox Activity of Quantum Dots through Introduction of Fluoroalkanethiolates into their Ligand Shells

Journal of the American Chemical Society
David J WeinbergEmily A Weiss

Abstract

Increasing the fraction of 1H,1H,2H,2H-perfluorodecanethiol (PFDT) in the mixed-PFDT/oleate ligand shell of a PbS quantum dot (QD) dramatically reduces the permeability of the ligand shell to alkyl-substituted benzoquinones (s-BQs), as measured by a decrease in the efficiency of collisional photoinduced electron transfer. Replacing only 21% of the oleates on the QD surface with PFDT reduces the yield of photo-oxidation by tetramethyl BQ by 68%. Experiments with s-BQ quenchers of two different sizes reveal that the degree of protection provided by the PFDT-doped monolayer, relative to a DT-doped monolayer at similar coverage, is due to both size exclusion (PFDT is larger and more rigid than DT), and the oleophobicity of PFDT. This work demonstrates the usefulness of fluorinated ligands in designing molecule-selective and potentially corrosion-inhibiting surface coatings for QDs for applications as robust emitters or high fidelity sensing platforms.

References

Aug 1, 1983·Journal of Pharmaceutical Sciences·S H YalkowskyT J Roseman
Jun 20, 1996·Chemical Reviews·Abraham Ulman
Apr 14, 2005·Chemical Reviews·J Christopher LoveGeorge M Whitesides
Jun 2, 2005·Nature Materials·Igor L MedintzHedi Mattoussi
Aug 24, 2005·Langmuir : the ACS Journal of Surfaces and Colloids·A ShaporenkoM Zharnikov
Nov 2, 2006·Journal of the American Chemical Society·Champika WeeramanAlexander V Benderskii
Feb 28, 2007·Chemical Communications : Chem Comm·Francesco BabudriRoberta Ragni
Oct 22, 2008·Journal of the American Chemical Society·Iwan MoreelsZeger Hens
Oct 28, 2008·Journal of the American Chemical Society·Cristina GentiliniLucia Pasquato
Sep 29, 2009·ACS Nano·Iwan MoreelsZeger Hens
Nov 10, 2009·Journal of the American Chemical Society·Yong Taik LimBong Hyun Chung
Jul 21, 2010·Proceedings of the National Academy of Sciences of the United States of America·Vishwanath H Dalvi, Peter J Rossky
Apr 26, 2011·Journal of the American Chemical Society·Matthew T FrederickFranz M Geiger
Oct 27, 2011·Langmuir : the ACS Journal of Surfaces and Colloids·Ivan GorelikovNaomi Matsuura
Jun 12, 2012·Chemical Communications : Chem Comm·Michał MalickiEmily A Weiss
Jul 21, 2012·Journal of the American Chemical Society·Kathryn E KnowlesEmily A Weiss
Aug 1, 2012·Proceedings of the National Academy of Sciences of the United States of America·Alexander K EpsteinJoanna Aizenberg
Oct 21, 2014·Chemical Reviews·Ilaria TirottaGiuseppe Resnati
Oct 29, 2014·Journal of the American Chemical Society·Chenxi QianGeoffrey A Ozin
Mar 10, 2015·Journal of the American Chemical Society·Kung-Ching LiaoGeorge M Whitesides
Jun 2, 2015·Chemical Communications : Chem Comm·Joseph C BearCharles W Dunnill
Aug 13, 2015·The Journal of Physical Chemistry Letters·Kenneth O ArudaEmily A Weiss
Nov 19, 2015·ACS Nano·William J PevelerIvan P Parkin
Jan 21, 2015·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Mariangela BoccalonLucia Pasquato

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Citations

Aug 9, 2016·Chemical Reviews·Rachel D HarrisEmily A Weiss
Sep 2, 2016·Journal of the American Chemical Society·Hongjin LvRichard Eisenberg
Mar 16, 2017·Journal of the American Chemical Society·Zhengyi ZhangEmily A Weiss
Dec 17, 2016·Chemical Communications : Chem Comm·V DichiaranteP Metrangolo
Jan 28, 2021·The Journal of Chemical Physics·Rebeckah BurkeTodd D Krauss

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