Reversible photoisomerization of an azobenzene-functionalized self-assembled monolayer probed by sum-frequency generation vibrational spectroscopy

2009 ◽  
Vol 11 (29) ◽  
pp. 6242 ◽  
Author(s):  
Steffen Wagner ◽  
Felix Leyssner ◽  
Christian Kördel ◽  
Sebastian Zarwell ◽  
Roland Schmidt ◽  
...  
Keyword(s):  
Vibrational Spectroscopy ◽  
Sum Frequency Generation ◽  
Self Assembled Monolayer ◽  
Sum Frequency ◽  
Self Assembled ◽  
Frequency Generation

Chemisorption of Self Assembled Alkyl Thiol on Au(111)

1994 ◽  
Vol 366 ◽  
Author(s):  
M. S. Yeganeh ◽  
S. M. Dougal ◽  
R. S. Polizzotti ◽  
P. Rabinowitz
Keyword(s):  
Azimuthal Angle ◽  
Sum Frequency Generation ◽  
Interfacial Structure ◽  
Single Type ◽  
Gold Substrate ◽  
Self Assembled Monolayer ◽  
Sum Frequency ◽  
Self Assembled ◽  
Frequency Generation

ABSTRACTWe have used infrared-visible sum-frequency generation (SFG) to spectroscopically probe the interfacial structure of a self assembled monolayer (SAM) of alkyl thiol on a Au(111) surface. The SFG spectra of the CH3 group measured as a function of azimuthal angle indicates that sulfur atoms cannot be situated at sites of a single type, e.g., hollow or bridge, but must be in a mixed arrangement. SFG is also used to study the reconstruction of the gold substrate by alkyl thiol.

scholarly journals Sum frequency generation spectroscopy probing of formation of self-assembled monolayers from thiols with terminal phenylalanine ring and intrachain amide groups

Chemija ◽  
2018 ◽  
Vol 29 (4) ◽  
Author(s):  
Marija Špandyreva ◽  
Ilja Ignatjev ◽  
Ieva Matulaitienė ◽  
Zenonas Kuodis ◽  
Gediminas Niaura
Keyword(s):  
Low Frequency ◽  
Sum Frequency Generation ◽  
Self Assembled Monolayer ◽  
Sum Frequency ◽  
Sum Frequency Generation Spectroscopy ◽  
Assembled Monolayers ◽  
Stretching Vibration ◽  
Polycrystalline Gold ◽  
Self Assembled ◽  
Frequency Generation

Formation of a self-assembled monolayer onto the polycrystalline gold substrate from thiols containing a terminal phenylalanine (Phe) ring and intrachain amide groups (HS-(CH2)7-CONH-(CH2)2-C6H5) was characterized by vibrational sum frequency generation (SFG) spectroscopy. The temporal evolution of the characteristic Phe ring stretching vibration ν(=C–H) near 3069 cm–1 and the Amide A mode were monitored by nonlinear vibrational spectroscopy. The SFG data revealed the complete ordering of the terminal Phe rings after about 60 min of adsorption. Formation of a strong hydrogen bonding between the adjacent chains of adsorbed molecules was evident by appearance of the Amide A mode at the relative low frequency (3280–3308 cm–1). The well-ordered and strongly hydrogen bonded SAM with the terminal Phe ring functionality is a promising platform for the analysis of interactions and the function of aromatic rings in biomolecular processes.

Sum Frequency Generation Vibrational Spectroscopy of 1,3-Butadiene Hydrogenation on 4 nm Pt@SiO2, Pd@SiO2, and Rh@SiO2 Core–Shell Catalysts

Nano Letters ◽  
2014 ◽  
Vol 15 (1) ◽  
pp. 39-44 ◽  
Author(s):  
James M. Krier ◽  
William D. Michalak ◽  
Xiaojun Cai ◽  
Lindsay Carl ◽  
Kyriakos Komvopoulos ◽  
...  
Keyword(s):  
Vibrational Spectroscopy ◽  
Sum Frequency Generation ◽  
Core Shell ◽  
Sum Frequency ◽  
Frequency Generation ◽  
Butadiene Hydrogenation
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