000198661 001__ 198661
000198661 005__ 20181203023504.0
000198661 0247_ $$2doi$$a10.1039/c3sc52595c
000198661 022__ $$a2041-6520
000198661 02470 $$2ISI$$a000332189900046
000198661 037__ $$aARTICLE
000198661 245__ $$aScanning tunneling microscopy and small angle neutron scattering study of mixed monolayer protected gold nanoparticles in organic solvents
000198661 260__ $$aCambridge$$bRoyal Soc Chemistry$$c2014
000198661 269__ $$a2014
000198661 300__ $$a9
000198661 336__ $$aJournal Articles
000198661 520__ $$aWhen a binary mixture of ligand molecules is used to coat gold nanoparticles, stripe-like domains can occur. These nanodomains confer nanoparticles unique structure-dependent properties. The domain structure has been characterized primarily using scanning tunneling microscopy (STM) in air and in vacuum. Here we show the first STM images of striped nanoparticles in a solvent, 1-phenyloctane. We achieve stable imaging conditions on dodecanethiol hexanethiol (C12 : C6) 2 : 1 protected gold nanoparticles. These features are persistent across many images and retain their direction and overall morphology when recorded at different scan angles. We also perform small angle neutron scattering (SANS) on two hybrid C6 : C12 nanoparticle samples dissolved in chloroform. The hybrid nanoparticles have the same composition and size distribution as samples imaged with STM, but one of the two ligands (either C6 or C12) is deuterated. Low resolution models reconstructed ab initio by simultaneous fitting of the SANS data reveal striped patterns of C6 and C12 on the gold surface. We use image analysis to quantitatively compare STM and SANS data, achieving remarkable agreement. This is the first paper to compare evidence of the existence of stripe-like domains for particles in solution using two independent techniques, and we believe that a combination of STM and SANS could become a major approach to characterize mixed ligand nanomaterials in solution.
000198661 700__ $$0244836$$aMoglianetti, Mauro$$g206528$$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland
000198661 700__ $$0244835$$aOng, Quy Khac$$g206064$$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland
000198661 700__ $$aReguera, Javier$$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland
000198661 700__ $$aHarkness, Kellen M.$$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland
000198661 700__ $$0244841$$aMameli, Marta$$g207211$$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland
000198661 700__ $$aRadulescu, Aurel$$uForschungszentrum Julich GmbH, D-52428 Julich, Germany
000198661 700__ $$aKohlbrecher, Joachim$$uPaul Scherrer Inst, SINQ, CH-5232 Villigen, Switzerland
000198661 700__ $$aJud, Corinne$$uUniv Fribourg, Adolphe Merkle Inst, CH-1723 Marly 1, Switzerland
000198661 700__ $$aSvergun, Dmitri I.
000198661 700__ $$0244724$$aStellacci, Francesco$$g196998$$uEcole Polytech Fed Lausanne, Inst Mat, CH-1015 Lausanne, Switzerland
000198661 773__ $$j5$$k3$$q1232-1240$$tChemical Science
000198661 909C0 $$0252323$$pSUNMIL$$xU12173
000198661 909CO $$ooai:infoscience.tind.io:198661$$pSTI$$particle
000198661 917Z8 $$x196998
000198661 937__ $$aEPFL-ARTICLE-198661
000198661 973__ $$aEPFL$$rREVIEWED$$sPUBLISHED
000198661 980__ $$aARTICLE