Comparisons of the Structure of Water at Neat Oil/Water and Air/Water Interfaces As Determined by Vibrational Sum Frequency Generation

Langmuir ◽  
1997 ◽  
Vol 13 (18) ◽  
pp. 4804-4806 ◽  
Author(s):  
D. E. Gragson ◽  
G. L. Richmond
Keyword(s):  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Oil Water ◽  
Frequency Generation

Bulk Contributions Modulate the Sum-Frequency Generation Spectra of Interfacial Water on Model Sea-Spray Aerosols

2018 ◽  
Author(s):  
Sandeep K. Reddy ◽  
Raphael Thiraux ◽  
Bethany A. Wellen Rudd ◽  
Lu Lin ◽  
Tehseen Adel ◽  
...  
Keyword(s):  
Single Layer ◽  
Sum Frequency Generation ◽  
Second Order ◽  
Interfacial Structure ◽  
Sea Spray ◽  
Third Order ◽  
Systematic Analysis ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Frequency Generation

Vibrational sum-frequency generation (vSFG) spectroscopy is used to determine the molecular structure of water at the interface of palmitic acid monolayers. Both measured and calculated spectra display speci c features due to third-order contributions to the vSFG response which are associated with nite interfacial electric potentials. We demonstrate that theoretical modeling enables to separate the third-order contributions, thus allowing for a systematic analysis of the strictly surface-sensitive, second-order component of the vSFG response. This study provides fundamental, molecular-level insights into the interfacial structure of water in a neutral surfactant system with relevance to single layer bio-membranes and environmentally relevant sea-spray aerosols. These results emphasize the key role that computer simulations can play in interpreting vSFG spectra and revealing microscopic details of water at complex interfaces, which can be difficult to extract from experiments due to the mixing of second-order, surface-sensitive and third-order, bulk-dependent contributions to the vSFG response.

Sum frequency generation study on the structure of water in the vicinity of an amphoteric polymer brush

2012 ◽  
Vol 91 ◽  
pp. 215-218 ◽  
Author(s):  
Takuya Kondo ◽  
Makoto Gemmei-Ide ◽  
Hiromi Kitano ◽  
Kohji Ohno ◽  
Hidenori Noguchi ◽  
...  
Keyword(s):  
Polymer Brush ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Frequency Generation

Sum-frequency generation analyses of the structure of water at amphoteric SAM–liquid water interfaces

2014 ◽  
Vol 121 ◽  
pp. 264-269 ◽  
Author(s):  
Kouji Nomura ◽  
Tadashi Nakaji-Hirabayashi ◽  
Makoto Gemmei-Ide ◽  
Hiromi Kitano ◽  
Hidenori Noguchi ◽  
...  
Keyword(s):  
Liquid Water ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Frequency Generation

Structure of water in the vicinity of a zwitterionic polymer brush as examined by sum frequency generation method

2012 ◽  
Vol 100 ◽  
pp. 126-132 ◽  
Author(s):  
Takuya Kondo ◽  
Kouji Nomura ◽  
Masanobu Murou ◽  
Makoto Gemmei-Ide ◽  
Hiromi Kitano ◽  
...  
Keyword(s):  
Polymer Brush ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Zwitterionic Polymer ◽  
Frequency Generation

Bulk Contributions Modulate the Sum-Frequency Generation Spectra of Interfacial Water on Model Sea-Spray Aerosols

2018 ◽  
Author(s):  
Sandeep K. Reddy ◽  
Raphael Thiraux ◽  
Bethany A. Wellen Rudd ◽  
Lu Lin ◽  
Tehseen Adel ◽  
...  
Keyword(s):  
Single Layer ◽  
Sum Frequency Generation ◽  
Second Order ◽  
Interfacial Structure ◽  
Sea Spray ◽  
Third Order ◽  
Systematic Analysis ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Frequency Generation

Vibrational sum-frequency generation (vSFG) spectroscopy is used to determine the molecular structure of water at the interface of palmitic acid monolayers. Both measured and calculated spectra display speci c features due to third-order contributions to the vSFG response which are associated with nite interfacial electric potentials. We demonstrate that theoretical modeling enables to separate the third-order contributions, thus allowing for a systematic analysis of the strictly surface-sensitive, second-order component of the vSFG response. This study provides fundamental, molecular-level insights into the interfacial structure of water in a neutral surfactant system with relevance to single layer bio-membranes and environmentally relevant sea-spray aerosols. These results emphasize the key role that computer simulations can play in interpreting vSFG spectra and revealing microscopic details of water at complex interfaces, which can be difficult to extract from experiments due to the mixing of second-order, surface-sensitive and third-order, bulk-dependent contributions to the vSFG response.

Structure of water at zwitterionic copolymer film–liquid water interfaces as examined by the sum frequency generation method

2014 ◽  
Vol 113 ◽  
pp. 361-367 ◽  
Author(s):  
Takuya Kondo ◽  
Kouji Nomura ◽  
Makoto Gemmei-Ide ◽  
Hiromi Kitano ◽  
Hidenori Noguchi ◽  
...  
Keyword(s):  
Liquid Water ◽  
Sum Frequency Generation ◽  
Copolymer Film ◽  
Sum Frequency ◽  
Structure Of Water ◽  
Frequency Generation
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