Azo-polymers modified with nucleobases and their interactions with DNA molecules |
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| Authors: | Elena-Luiza Epure Ioana Andreea Moleavin Elena Taran Anh V Nguyen Norica Nichita Nicolae Hurduc |
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| Affiliation: | (1) Department of Natural and Synthetic Polymers, “Gheorghe Asachi” Technical University of Iasi, Bd. Mangeron 71, 700050 Iasi, Romania;(2) School of Chemical Engineering, University of Queensland, Brisbane, QLD, 4072, Australia;(3) Present address: Australian Institute for Bioengineering & Nanotechnology, Australian National Fabrication Facility, The University of Queensland, Brisbane, QLD, 4072, Australia;(4) Department of Viral Glycoproteins, Institute of Biochemistry, Splaiul Independentei 296, Sector 6, Bucharest, Romania; |
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| Abstract: | The photo-fluidization process which is specific for azo-materials opens a new perspective for their use in the field of molecules
nano manipulation at the surface of the azo polymer films. This is possible considering that in the case of the UV irradiation
from a polarized laser source the azo material has an unidirectional flow. Here, we investigated the structuring phenomena
occurring on the surface of the azo-polysiloxanes films modified with nucleobases, upon UV irradiation. Measurements of topography
and adhesive forces between polymeric substrates and a hydrophilic probe have been done by atomic force microscopy (AFM).
The response of the material upon irradiation has been investigated also by using UV−VIS spectroscopy. This method allowed
us to draw the photo-isomerization and relaxation curves. Also, preliminary tests were conducted to determine the capacity
of the film surface to immobilize DNA molecules. |
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