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PHOTOACOUSTIC SPECTRA OF SOME BIOLOGICAL MOLECULES BETWEEN 300 AND 130 nm
Author(s) -
Inagaki Takashi,
Ito Atsushi,
Hieda Kotaro,
Ito Takashi
Publication year - 1986
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1986.tb04668.x
Subject(s) - absorption (acoustics) , molecule , spectral line , chemistry , analytical chemistry (journal) , absorption spectroscopy , photoacoustic imaging in biomedicine , aqueous solution , thymine , materials science , photochemistry , optics , organic chemistry , physics , astronomy , composite material , dna , biochemistry
Photoacoustic spectra of the biological molecules thymine, adenine, tyrosine, ergosterol and polyadenylic acid were obtained in the 300‐130 nm region of photon wavelength using synchrotron radiation as a light source. Photoacoustic measurements were performed with thin solid films of these molecules made by vacuum evaporation, except for polyadenylic acid whose thin films were made from the aqueous solution. It was found that the spectra exhibit absorption structures which are in good agreements with those found from conventional transmission measurements. Some of the spectra, however, exhibit a marked deviation from the transmission data in the region below 145 nm, which may be indicative of photon absorption with subsequent photoelectron emission.