TY - JOUR
T1 - Insight into organometallic intermediate and its evolution to covalent bonding in surface-confined ullmann polymerization
AU - Di Giovannantonio, Marco
AU - El Garah, Mohamed
AU - Lipton-Duffin, Josh
AU - Meunier, Vincent
AU - Cardenas, Luis
AU - Fagot Revurat, Yannick
AU - Cossaro, Albano
AU - Verdini, Alberto
AU - Perepichka, Dmitrii F.
AU - Rosei, Federico
AU - Contini, Giorgio
PY - 2013/9/24
Y1 - 2013/9/24
N2 - We provide insight into surface-catalyzed dehalogenative polymerization, analyzing the organometallic intermediate and its evolution into planar polymeric structures. A combined study using scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), low energy electron diffraction (LEED), near-edge X-ray absorption fine structure (NEXAFS) spectroscopy and first-principles calculations unveils the structural conformation of substrate-bound phenylene intermediates generated from 1,4-dibromobenzene precursors on Cu(110), showing the stabilizing role of the halogen. The appearance of covalently bonded conjugated structures is followed in real time by fast-XPS measurements (with an acquisition time of 2 s per spectrum and heating rate of 2 K/s), showing that the detaching of phenylene units from the copper substrate and subsequent polymerization occur upon annealing above 460 ± 10 K.
AB - We provide insight into surface-catalyzed dehalogenative polymerization, analyzing the organometallic intermediate and its evolution into planar polymeric structures. A combined study using scanning tunneling microscopy (STM), X-ray photoelectron spectroscopy (XPS), low energy electron diffraction (LEED), near-edge X-ray absorption fine structure (NEXAFS) spectroscopy and first-principles calculations unveils the structural conformation of substrate-bound phenylene intermediates generated from 1,4-dibromobenzene precursors on Cu(110), showing the stabilizing role of the halogen. The appearance of covalently bonded conjugated structures is followed in real time by fast-XPS measurements (with an acquisition time of 2 s per spectrum and heating rate of 2 K/s), showing that the detaching of phenylene units from the copper substrate and subsequent polymerization occur upon annealing above 460 ± 10 K.
UR - http://www.scopus.com/inward/record.url?scp=84884963810&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84884963810&partnerID=8YFLogxK
U2 - 10.1021/nn4035684
DO - 10.1021/nn4035684
M3 - Article
AN - SCOPUS:84884963810
SN - 1936-0851
VL - 7
SP - 8190
EP - 8198
JO - ACS nano
JF - ACS nano
IS - 9
ER -