TY - JOUR
T1 - Fabrication of an amino-terminated organic surface by chemical conversion of a nitro-terminated self-assembled monolayer
AU - Al-Rawashdeh, N. A.F.
AU - Azzam, W.
AU - Wöll, Ch
N1 - Funding Information:
N.A.F.A. gratefully acknowledges the short-term research fellowship supported by the DAAD (Deutscher Akademischer Austausch Dienst) and Jordan University of Science and Technology.Jordan. W.A. gratefully acknowledges the partial financial support by Tafila Technical University.Jordan.
PY - 2008
Y1 - 2008
N2 - Self-assembeld monolayers (SAMs) formed by the adsorption of 4′-nitro-1,1′-biphenyl-4-thiol (NBT) on gold substrates were studied using infrared reflection-absorption spectroscopy (IR-RAS). The IRRAS results revealed that the straightforward approach for the fabrication of SAMs, namely, immersions of the gold film in organothiol solutions, leads to the formation of highly oriented SAMs. To prepare highly oriented amino-terminated SAMs, the nitro-terminated SAMs were immersed into ZnCl2/HCl solution to chemically convert the nitro group to an amino group. IR spectra recorded for this conversion revealed that the conversion is completed after a fairly short period of time (45 min.), immersion for longer time results in the etching of the SAMs by the acidic solution.
AB - Self-assembeld monolayers (SAMs) formed by the adsorption of 4′-nitro-1,1′-biphenyl-4-thiol (NBT) on gold substrates were studied using infrared reflection-absorption spectroscopy (IR-RAS). The IRRAS results revealed that the straightforward approach for the fabrication of SAMs, namely, immersions of the gold film in organothiol solutions, leads to the formation of highly oriented SAMs. To prepare highly oriented amino-terminated SAMs, the nitro-terminated SAMs were immersed into ZnCl2/HCl solution to chemically convert the nitro group to an amino group. IR spectra recorded for this conversion revealed that the conversion is completed after a fairly short period of time (45 min.), immersion for longer time results in the etching of the SAMs by the acidic solution.
KW - Biphenylthiol
KW - Gold film
KW - Infrared spectroscopy
KW - Self-assembled monolayers (SAMs)
KW - Terminated SAMs
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U2 - 10.1524/zpch.2008.6017
DO - 10.1524/zpch.2008.6017
M3 - Article
AN - SCOPUS:47649125357
SN - 0942-9352
VL - 222
SP - 965
EP - 978
JO - Zeitschrift fur Physikalische Chemie
JF - Zeitschrift fur Physikalische Chemie
IS - 5-6
ER -