Abstract: Surface-enhanced resonance hyper-Raman scattering (SERHRS) spectra of bacteriorhodopson (BRh) located in purple membranes of Halobacterium halobium adsorbed on aggregated hydrosol Ag particles are obtained for the first time. The SERHR spectra excited by pulse 1064 nm radiation are compared with SERR spectra excited by radiation with doubled frequency (532 nm). The bands corresponding to the BRh570 and M412 forms of Brh are observed in both spectra. The relative intensities of these bands are discussed.!
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