Abstract
Recently, solid forms of deoxyrybonucleic acid (DNA) and its lipoplex with hexadecyltrimethylammonium chloride (CTMA) have been studied with great interest, because of potential applications outside life sciences. In the present work we report on spontaneous formation of characteristic self-assembled linear patterns formed with DNA-CTMA on solid support. For this purpose a single-step technique based on Langmuir-Blodgett scheme has been successfully implemented. DNA-CTMA lipoplex is found to be capable of forming insoluble films at the air/water interface. The lipoplex subjected to compression on the free water surface and then transferred onto mica substrate, usually disintegrates into isolated islands. However, if a certain combination of experimental parameters is applied, the DNA-CTMA monolayer splits into elongated parallel structures.
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