Four-photon microwave laser spectroscopy of molecules in the hydration layers of biopolymers and nanoparticles

Journal Article · Fri Jul 31 00:00:00 EDT 2009 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2009V039N07ABEH014022· OSTI ID:21471123

Bunkin, Aleksei F; Pershin, Sergei M ^[1]

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1. A.M. Prokhorov General Physics Institute, Russian Academy of Sciences, Moscow (Russian Federation)

Four-photon laser scattering spectra of bidistilled water and aqueous solutions of biopolymers (proteins and DNA), carbon nanotubes and hydrogen peroxide have been measured in the range {+-}10 cm{sup -1}. The spectra show rotational resonances of H{sub 2}O{sub 2}, ortho-H{sub 2}O and para-H{sub 2}O molecules. The resonance contribution of the H{sub 2}O rotational spectrum to the four-photon scattering signal in the solutions of the biopolymers and hydrophobic nanoparticles is an order of magnitude larger in comparison with water, which points to free rotation of the water molecules near the surface of such particles. This effect is due to the formation of water depletion layers near hydrophobic nanoparticles, as predicted in earlier theoretical studies. (special issue devoted to the 80th birthday of S.A. Akhmanov)

• OSTI ID: 21471123
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Vol. 39, Issue 7; Other Information: DOI: 10.1070/QE2009v039n07ABEH014022; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
AQUEOUS SOLUTIONS
DEPLETION LAYER
DNA
HYDROGEN PEROXIDE
LASER SPECTROSCOPY
MICROWAVE RADIATION
MOLECULES
NANOTUBES
PARTICLES
PHOTONS
PROTEINS
RESONANCE
ROTATION
SCATTERING
SPECTRA
WATER
BOSONS
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
HOMOGENEOUS MIXTURES
HYDROGEN COMPOUNDS
LAYERS
MASSLESS PARTICLES
MIXTURES
MOTION
NANOSTRUCTURES
NUCLEIC ACIDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PEROXIDES
RADIATIONS
SOLUTIONS
SPECTROSCOPY