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

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.

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

Colloids and Surfaces B Biointerfaces ◽

10.1016/j.colsurfb.2011.11.012 ◽

2012 ◽

Vol 91 ◽

pp. 215-218 ◽

Cited By ~ 18

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

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

Colloids and Surfaces B Biointerfaces ◽

10.1016/j.colsurfb.2012.05.008 ◽

2012 ◽

Vol 100 ◽

pp. 126-132 ◽

Cited By ~ 23

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

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Probing the Structure of Water at the Interface with Graphene Oxide Using Sum Frequency Generation Vibrational Spectroscopy

The Journal of Physical Chemistry C ◽

10.1021/acs.jpcc.1c08328 ◽

2022 ◽

Author(s):

Yongming Hong ◽

Jiali He ◽

Cuiyun Zhang ◽

Xinping Wang

Keyword(s):

Graphene Oxide ◽

Vibrational Spectroscopy ◽

Sum Frequency Generation ◽

Sum Frequency ◽

Structure Of Water ◽

Frequency Generation

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

10.26434/chemrxiv.5743638.v1 ◽

2018 ◽

Cited By ~ 1

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.

Download Full-text