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Applied Spectroscopy

Applied Spectroscopy

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  • Vol. 66, Iss. 6 — Jun. 1, 2012
  • pp: 711–718

Novel SiO2-Deposited CaF2 Substrate for Vibrational Sum-Frequency Generation (SFG) Measurements of Chemisorbed Monolayers in an Aqueous Environment

ADCHARA PADERMSHOKE, SHOUTA KONISHI, MASATO ARA, HIROKAZU TADA, and TAKA-AKI ISHIBASHI

Applied Spectroscopy, Vol. 66, Issue 6, pp. 711-718 (2012)


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Abstract

A novel SiO2-deposited CaF2 (SiO2/CaF2) 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 SiO2/CaF2 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−1) 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.

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Citation
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)
http://www.opticsinfobase.org/as/abstract.cfm?URI=as-66-6-711

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