Vibration Spectroscopy of Interface by Sum-Frequency Generation(SFG).

Probing of lipase activity at air/water interface by sum-frequency generation spectroscopy.

The infrared-visible sum-frequency generation (SFG) vibrational spectroscopy was used to probe enzymatic activity of Thermomyces lanuginosus lipase (TLL) at air/water interface. A monolayer of amphiphilic O-palmitoyl-2,3-dicyanohydroquinone (PDCHQ), containing target ester group and two CN groups serving as vibrational markers, was utilized as an enzyme substrate. SFG data revealed the detailed...

Investigation of Interfaces by Sum-Frequency Generation Vibrational Spectroscopy

Theoretical Sum Frequency Generation Spectroscopy of Peptides

Vibrational sum frequency generation (SFG) has become a very promising technique for the study of proteins at interfaces, and it has been applied to important systems such as anti-microbial peptides, ion channel proteins, and human islet amyloid polypeptide. Moreover, so-called "chiral" SFG techniques, which rely on polarization combinations that generate strong signals primarily for chiral mol...

Liquid Interfaces Probed by Second-Harmonic and Sum-Frequency Spectroscopy.

D. Chemical Reactions at Interfaces 1348 E. Electrochemistry 1350 F. Some Environmentally Interesting SH Studies 1351 G. Structural Phase Transitions 1351 H. Chiral Interfaces 1353 III. Dynamics at Liquid Interfaces 1354 A. Adsorption Kinetics to Air/Water Interfaces 1354 B. Electron Transfer at a Liquid/Liquid Interface 1355 C. Photoisomerization at Aqueous Interfaces 1355 D. Orientational Rel...

Nanoporous silica-water interfaces studied by sum-frequency vibrational spectroscopy.

Using sum-frequency vibrational spectroscopy, we found that water structure at nanoporous silica/water interfaces depended on the nanoporous film structure. For a periodic, self-assembled nanoporous film with monosized 2 nm pores occupying 20% of the top surface area, the surface vibrational spectrum was dominated by water in contact with silica, bare or covered by silane, at the top surface. I...