Novel SiO2-Deposited CaF2 Substrate for Vibrational Sum-Frequency Generation (SFG) Measurements of Chemisorbed Monolayers in an Aqueous Environment-Reference-Cited by-同舟云学术

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

Published:2012-06 Issue:6 Volume:66 Page:711-718
ISSN:0003-7028
Container-title:Applied Spectroscopy
language:en
Short-container-title:Appl Spectrosc

Author:

Padermshoke Adchara¹,Konishi Shouta¹,Ara Masato¹,Tada Hirokazu¹,Ishibashi Taka-Aki¹

Affiliation:

1. Center for Quantum Life Sciences, Hiroshima University, Higashi-Hiroshima, 739-8530, Japan (A.P., S.K., T.-A.I.); Department of Chemistry, Graduate School of Science, Hiroshima University, Higashi-Hiroshima, 739-8526, Japan (A.P., S.K., T.-A.I.); Institute for Nanoscience Design, Osaka University, Toyonaka, 560-8531, Japan (M.A.); and Graduate School of Engineering Science, Osaka University, Toyonaka, 560-8531, Japan (H.T.)

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.

Publisher

SAGE Publications

Subject

Spectroscopy,Instrumentation

Link

http://journals.sagepub.com/doi/pdf/10.1366/11-06583

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