95 Orientational ordering of short DNA fragments in the polymer matrix |
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Authors: | Zareh A Grigoryan Armen T Karapetian |
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Institution: | 1. Department of Electronics , Goris State University , Avangard 2, Goris , 3201 , Armenia;2. Department of Physics and Electrical Engineering , Yerevan State University of Architecture and Construction , Yerevan , 0009 , Armenia Phone: Phone 37410-554341 Fax: Phone 37410-554341 |
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Abstract: | As a vital part of modern nanotechnology, nanofabrication aims to develop nanoscale components and nanomaterials in large quantities at relatively low cost. The promising strategy is the bottom-up self-assembly techniques of chemical assembly and molecular recognition to bring together individual atoms, molecules, or supramolecular building blocks to form useful constructs. The DNA-DNA self-assembly seems to be the key point regulating the polymer composites formation. We address the mixture of a flexible polymer with short double-strand DNA fragments, where the persistence length is in comparable with the contour length of the molecule. We investigate the conditions affecting the orientational order formation of short double-strand DNA fragments, immersed in the flexible polymer. It is shown that short double-strand DNA fragments exhibit the formation of a liquid crystalline ordered phase, in dependence on the value of the Flory–Huggins parameter, aspect ratio , and the attraction energy (Mamasakhlisov et al., 2009; Todd et al., 2008) of the double strand DNA molecules and volume fraction of polymer. |
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