In situ observation of the potential-dependent structure of an electrolyte/electrode interface by heterodyne-detected vibrational sum frequency generation

2020 ◽  
Vol 22 (4) ◽  
pp. 2580-2589 ◽  
Author(s):  
Atsushi Sayama ◽  
Satoshi Nihonyanagi ◽  
Yasuhiro Ohshima ◽  
Tahei Tahara
Keyword(s):  
Molecular Level ◽  
Sum Frequency Generation ◽  
Interfacial Structure ◽  
In Situ Observation ◽  
Sum Frequency ◽  
Electrochemical Interface ◽  
Electrode Interface ◽  
Frequency Generation

HD-VSFG spectroscopy reveals the potential-dependent interfacial structure of an electrochemical interface at the molecular level.

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.

Study of FeOx/Au inverse model catalysts by in situ sum frequency generation vibrational spectroscopy

2009 ◽  
Vol 96 (2) ◽  
pp. 345-356 ◽  
Author(s):  
Orsolya Hakkel ◽  
Zoltán Pászti ◽  
Tamás Keszthelyi ◽  
Krisztina Frey ◽  
László Guczi
Keyword(s):  
Vibrational Spectroscopy ◽  
Sum Frequency Generation ◽  
Inverse Model ◽  
Model Catalysts ◽  
Sum Frequency ◽  
Frequency Generation

Revealing Molecular-Level Interaction between a Polymeric Drug and Model Membrane Via Sum Frequency Generation and Microfluidics

Langmuir ◽  
2020 ◽  
Vol 36 (6) ◽  
pp. 1615-1622 ◽  
Author(s):  
Chu Wang ◽  
Yongsheng Luo ◽  
Xu Li ◽  
Furong Zhang ◽  
Feng Wang ◽  
...  
Keyword(s):  
Molecular Level ◽  
Sum Frequency Generation ◽  
Model Membrane ◽  
Sum Frequency ◽  
Polymeric Drug ◽  
Frequency Generation
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