Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 12, Issue 7, Pages 2123-2129Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/b202461f
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A new C-60-uracil adduct capable of hydrogen bonding, via complimentary base pairing. of adenine. adenosine, and adenosine 5'-triphosphate (ATP) was synthesized and characterized by UV-visible and H-1 NMR spectroscopy, cyclic voltammetry and differential pulse voltammetry. as well as ESI-mass spectrometry. Molecular modeling by, ab initio B3LYP/3-21G(*) calculations revealed the Watson-Crick type base pairing. Stable expanded liquid Langmuir films of the C-60)-uracil-adenine. C-60-uracil-adenosine and C-60-uracil-ATP complexes were prepared and characterized by isotherms of surface pressure versus area per molecule as well as the Brewster angle microscopy imaging. The area per molecule at infinite adduct dilution in the film was dependent on composition of the subphase solution and increased in the order: water < adenine < adenosine < ATP solution. Comparison of experimental and calculated areas per molecule and dipole moment components normal to the subphase-air interface indicated prevailing horizontal orientation of the complexes in the films. The Langmuir films were transferred. by using the Langmuir-Blodgett technique, onto quartz slides and characterized by the UV-visible spectroscopy.
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