Abstract

The conformation of keratin chemically bound to the surface of silica gel particles has been investigated by means of photoacoustic Fourier transform infrared (PA/FT-IR) spectroscopy. On the basis of the peak positions of the amide I and amide II bands, it is concluded that the keratin thin layer assumes the native α-helix form. It is also noted that the PA/FT-IR method is the only feasible method for observing the IR spectra of the very thin layer of keratin coating on the silica gel particles. The diffuse reflectance technique failed to provide any information on keratin, because of the strong spectral artifact due to the specular reflection at the surface of the silica gel.

Recent applications of FT-IR spectroscopy to polymer systems

J. L. Koenig and M. K. Antoon
Appl. Opt. 17(9) 1374-1385 (1978)

Characterisation and functionalisation of cold-processed titania sol-gel layers on silica and silicate surfaces

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Characterization of thermo-optic coefficient and material loss of high refractive index silica sol-gel films in the visible and near-IR

Brian A. Rose, Ashley J. Maker, and Andrea M. Armani
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Gel wax-based tissue-mimicking phantoms for multispectral photoacoustic imaging

Efthymios Maneas, Wenfeng Xia, Olumide Ogunlade, Martina Fonseca, Daniil I. Nikitichev, Anna L. David, Simeon J. West, Sebastien Ourselin, Jeremy C. Hebden, Tom Vercauteren, and Adrien E. Desjardins
Biomed. Opt. Express 9(3) 1151-1163 (2018)

Phase modulation and morphological evolution associated with surface-bound particle ablation

Manyalibo J. Matthews, Nan Shen, John Honig, Jeff D. Bude, and Alexander M. Rubenchik
J. Opt. Soc. Am. B 30(12) 3233-3242 (2013)