DNA‐Origamistrukturen: Graphenoxidfilme können leicht in Lösung verarbeitet, unter Einwirkung von Licht mit Strukturen versehen und chemisch modifiziert werden. Das Beschichten derart strukturierter Oberflächen mit DNA‐Origamistrukturen erforderte eine hochselektive Adsorption auf dem Graphenoxid (siehe Bild).
Articles you may be interested inElectron-beam exposure mechanisms in hydrogen silsesquioxane investigated by vibrational spectroscopy and in situ electron-beam-induced desorption Relationship between nanoscale roughness and ion-damaged layer in argon plasma exposed polystyrene films J. Appl. Phys. 107, 084310 (2010); 10.1063/1.3373587In situ synthesis and direct immobilization of ssDNA on electron beam patterned hydrogen silsesquioxane A novel way to immobilize deoxyribonucleic acid (DNA) origami on a conventional substrate using hydrogen silsesquioxane (HSQ) as a functionalized platform is demonstrated. An alternative approach to quantifying roughness of the HSQ surfaces for 2D DNA origami immobilization is also introduced. Effects of oxygen plasma treatment on the surface roughness and functionalization (for DNA origami immobilization) of exposed and developed HSQ patterns are characterized. Surface root mean square roughness of electron-beam exposed HSQ with various thicknesses is investigated and optimized down to 0.2 nm for ultrathin (sub-15 nm) HSQ patterns.
DNA‐Origamistrukturen bilden sich aus einem langen ringförmigen DNA‐Strang, den mehrere kurze DNA‐Sequenzen (Klammern) in die gewünschte Form bringen. Diese äußerst feinen biomolekularen Nanomuster werden auf chemisch modifizierte Graphenblätter gebracht. In ihrer Zuschrift auf zeigen M. Lieberman, S. O. Kim et al., dass chemisch modifiziertes Graphen ein hervorragendes Trägermaterial für biomolekulare Nanomuster ist.
DNA origami structures …… are assembled from one long circular DNA strand precisely folded by lots of designed DNA staples. These ultrafine biomolecular nanopatterns are selectively and safely adsorbed on chemically modified graphene sheets. In their Communication on page 912 ff., M. Lieberman, S. O. Kim, and co-workers show that chemically modified graphene is an excellent substrate material for sublithographic bimolecular nanopatterning.
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