A novel SiO<sub>2</sub>-deposited CaF<sub>2</sub> (SiO<sub>2</sub>/CaF<sub>2</sub>) substrate for measuring vibrational sum-frequency generation (SFG) spectra of silane-based chemisorbed monolayers in aqueous media has been developed. The substrate is suitable for silanization and transparent over a broad range of the infrared (IR) probe. The present work demonstrates the practical application of the SiO<sub>2</sub>/CaF<sub>2</sub> substrate and, to our knowledge, the first SFG spectrum at the solid/water interface of a silanized monolayer observed over the IR fingerprint region (1780-1400 cm<sup>−1</sup>) using a back-side probing geometry. This new substrate can be very useful for SFG studies of various chemisorbed organic molecules, particularly biological compounds, in aqueous environments.
Vol. 7, Iss. 8 Virtual Journal for Biomedical Optics
ADCHARA PADERMSHOKE, SHOUTA KONISHI, MASATO ARA, HIROKAZU TADA, and TAKA-AKI ISHIBASHI, "Novel SiO2-Deposited CaF2 Substrate for Vibrational Sum-Frequency Generation (SFG) Measurements of Chemisorbed Monolayers in an Aqueous Environment," Appl. Spectrosc. 66, 711-718 (2012)
References are not available for this paper.
OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.