FN Archimer Export Format
PT J
TI Evidence of the Grafting Mechanisms of Diazonium Salts on Gold Nanostructures
BT 
AF BETELU, Stephanie
   TIJUNELYTE, Inga
   BOUBEKEUR-LECAQUE, Leila
   IGNATIADIS, Ioannis
   IBRAHIM, Joyce
   GABOREAU, Stephane
   BERHO, Catherine
   TOURY, Timothee
   GUENIN, Erwann
   LIDGI-GUIGUI, Nathalie
   FELIDJ, Nordin
   RINNERT, Emmanuel
   LAMY DE LA CHAPELLE, Marc
AS 1:1,2;2:3;3:4;4:1,2;5:5;6:1,2;7:1,2;8:4;9:3;10:3;11:4;12:6;13:3;
FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:;11:;12:PDG-REM-RDT-LDCM;13:;
C1 Bur Rech Geol & Minieres, Water Environm & Ecotechnol Div, F-45060 Orleans 02, France.
   Bur Rech Geol & Minieres, Lab Direct, F-45060 Orleans 02, France.
   Univ Paris 13, Sorbonne Paris Cite, CNRS, Lab CSPBAT,UMR7244, 74 Rue Marcel Cachin, F-93017 Bobigny, France.
   Univ Paris Diderot, Sorbonne Paris Cite, CNRS, ITODYS,UMR 7086, 15 Rue J-A de Baif, F-75205 Paris 13, France.
   Univ Technol Troyes, 12 Rue Marie Curie, F-10000 Troyes, France.
   IFREMER, Brittany Ctr, CS10070, Measurements Detect & Sensors Lab, F-29280 Plouzane, France.
C2 BRGM, FRANCE
   BRGM, FRANCE
   UNIV PARIS 13, FRANCE
   UNIV PARIS 07, FRANCE
   UNIV TECHNOL TROYES, FRANCE
   IFREMER, FRANCE
SI BREST
SE PDG-REM-RDT-LDCM
IN WOS Ifremer jusqu'en 2018
   copubli-france
   copubli-p187
   copubli-univ-france
IF 4.536
TC 39
UR https://archimer.ifremer.fr/doc/00350/46139/46200.pdf
LA English
DT Article
AB Gold nanostructures (GNS) were chemically functionalized using four different diazonium salts: benzene-diazonium-tetrafluoroborate (DS), 4-decylbenzene-diazonium-tetrafluoroborate (DS-C10H21), 4-carboxybenzene-diazonium-tetrafluoroborate (DS-COOH), and 4-(aminoethyl)-benzene-diazonium-tetrafluoroborate (DS-(CH2)(2)NH2). Effective chemical grafting on GNS was shown by surface-enhanced Raman spectroscopy (SERS); aromatic ring deformations in the range of 1570-1591 cm(-1) are of particular interest. The very strong band observed around 1075 cm(-1), related to CH in-plane bending for mono- and para-substituted benzenes (coupled with ring-N stretching mode), provided further irrefutable evidence of the grafting. SERS enhancement of these two bands ascertains the perpendicular orientation of the aromatic rings on the GNS. X-ray photoelectron spectroscopy (XPS) analyses of chemically grafted flat gold surfaces suggest azophenyl radical pathways when using DS, DS-(CH2)(2)-NH2, or DS-C10H21. It was shown that coating at the interface is the result of a Au-N covalent bond; growth of the layers is via N=N. These XPS results agree with those provided by SERS without excluding the aryl radical pathways. For DS-COOH, the results provided by SERS, XPS, and density functional theory calculations show (i) effective chemical grafting of the GNS via a covalent bond between gold and carboxylate forms and (ii) growth via multilayers in the meta position between aromatic rings through either N=N or C-C bonds.
PY 2016
PD AUG
SO Journal Of Physical Chemistry C
SN 1932-7447
PU Amer Chemical Soc
VL 120
IS 32
UT 000381778000032
BP 18158
EP 18166
DI 10.1021/acs.jpcc.6b06486
ID 46139
ER

EF