Reaction network governing diphosphine-protected gold nanocluster formation from nascent cationic platforms

Physical Chemistry Chemical Physics : PCCP
John M Pettibone, Jeffrey W Hudgens

Abstract

We identify the reaction network governing gold monolayer protected cluster (MPC) formation during the reduction of Au(PPh(3))Cl and L(5) (L(5) = 1,5-bis(diphenylphosphino)pentane) in solutions. UV-vis spectroscopy and electrospray ionization mass spectrometry (ESI-MS) monitored the formation of ligated Au(x): 6 ≤ x ≤ 12 clusters, which comprise the reaction intermediates and final products. Initially, predominantly [Au(2)L(5)(2)](2+) complexes form through dissolution of Au(PPh(3))Cl. These complexes control the reduction and nucleation reactions that form nascent phosphine-ligated Au(8) and Au(10) ionic clusters. [Au(10)L(5)(4)](2+) is an observed growth platform for ligated Au(11) and Au(12) clusters. The data for syntheses of Au : L(5) systems evidence that the nascent reaction products (t < 3 days) are less dependent on the chosen reducing agent (borane tert-butylamine complex or NaBH(4)); instead, after reduction ceases, subsequent solution phase processing provides greater control for tuning cluster nuclearity.

References

Feb 18, 2003·Inorganic Chemistry·Peter SchwerdtfegerHubert Schmidbaur
Jun 28, 2006·The Journal of Physical Chemistry. B·Yasushi YanagimotoTatsuya Tsukuda
Oct 27, 2006·The Journal of Physical Chemistry. B·Massimo F BertinoLai-Sheng Wang
Nov 22, 2007·Journal of Colloid and Interface Science·Eric E Finney, Richard G Finke
Mar 15, 2008·Langmuir : the ACS Journal of Surfaces and Colloids·Jerôme MajimelMona Tréguer-Delapierre
Sep 3, 2008·Chemical Society Reviews·Günter Schmid
Jan 10, 2012·Small·John M Pettibone, Jeffrey W Hudgens

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Citations

Jul 1, 2017·Chemical Communications : Chem Comm·Marshall R LigareGrant E Johnson
Jun 24, 2017·Physical Chemistry Chemical Physics : PCCP·Marshall R LigareJulia Laskin
May 26, 2016·The Analyst·Grant E Johnson, Julia Laskin
Oct 4, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Howard Z MaRichard A J O'Hair
Oct 16, 2014·Applied Physics Letters·Elena V PetrovaSergey A Ermilov
Mar 6, 2021·The Journal of Physical Chemistry Letters·Marshall R LigareGrant E Johnson
Oct 30, 2020·Journal of the American Society for Mass Spectrometry·Michael A HewittGrant E Johnson

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