Using Electronic Sum-Frequency Generation to Analyze the Interfacial Structure of Singlet Fission-Capable Perylenediimide Thin Films

2020 ◽  
Vol 124 (21) ◽  
pp. 11401-11413 ◽  
Author(s):  
Daniel E. Cotton ◽  
Aaron P. Moon ◽  
Sean T. Roberts
Keyword(s):  
Thin Films ◽  
Sum Frequency Generation ◽  
Interfacial Structure ◽  
Singlet Fission ◽  
Sum Frequency ◽  
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.

Understanding the Role of Nonresonant Sum-Frequency Generation from Polystyrene Thin Films

2010 ◽  
Vol 1 (16) ◽  
pp. 2435-2439 ◽  
Author(s):  
Alexander D. Curtis ◽  
Sarah B. Reynolds ◽  
Angela R. Calchera ◽  
James E. Patterson
Keyword(s):  
Thin Films ◽  
Sum Frequency Generation ◽  
Sum Frequency ◽  
Frequency Generation

Interfacial Structure of a DOPA-Inspired Adhesive Polymer Studied by Sum Frequency Generation Vibrational Spectroscopy

Langmuir ◽  
2013 ◽  
Vol 29 (22) ◽  
pp. 6659-6664 ◽  
Author(s):  
Chuan Leng ◽  
Yuwei Liu ◽  
Courtney Jenkins ◽  
Heather Meredith ◽  
Jonathan J. Wilker ◽  
...  
Keyword(s):  
Vibrational Spectroscopy ◽  
Sum Frequency Generation ◽  
Interfacial Structure ◽  
Sum Frequency ◽  
Frequency Generation
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