Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements
Due to superior self-assembly properties, DNA is a very promising candidate for the basis of future bottom-up solutions for molecular electronics and therefore the conductivity of DNA is a very crucial question. In this work DC conductivity measurements on conjugates consisting of G-quadruplex DNA and metal nanoparticles were carried out. The fabrication and results obtained from the electrical measurements of three types of conjugates (20nm G4-AgNP chains, 20nm G4-AuNP flowers and 60nm G4-AuNPs) are reported. Additionally, 20nm AuNP chains coated with G4 were fabricated but not measured electrically. Results reported here indicate that in ambient conditions G4-DNA exhibits insulating behaviour with the resistance of the order of 1 TOhm. However, it was demonstrated that increasing the relative humidity affects to the intrinsic resistance of G4-DNA. The resistance of the conjugates was decreased down to 200 MOhm in the relative humidity of 80 %.
Asiasanat
Metadata
Näytä kaikki kuvailutiedotKokoelmat
- Pro gradu -tutkielmat [29041]
Samankaltainen aineisto
Näytetään aineistoja, joilla on samankaltainen nimeke tai asiasanat.
-
Conductivity measurements of DNA TX tile and origami structures
Paasonen, Seppo (2011)Tässä tutkielmassa on tutkittu kahden erilaisen itsejärjestyvän DNA-rakenteen sähkönjohtavuutta nanomittakaavassa. Ensimmäinen rakenteista on suorakaiteenmuotoinen kaksiulotteinen DNA-levy kooltaan noin 70×100 nm2 toisen ... -
Disorder and dephasing effects on electron transport through conjugated molecular wires in molecular junctions
Nozaki, D.; Gomes da Rocha, Claudia; Pastawski, H.M.; Cuniberti, G. (American Physical Society, 2012)Understanding electron transport processes in molecular wires connected between contacts is a central focus in the field of molecular electronics. Especially, the dephasing effect causing tunneling-to-hopping transition ... -
Developments in many-body theory of quantum transport and spectroscopy with non-equilibrium Green's functions and time-dependent density functional theory
Uimonen, Anna-Maija (University of Jyväskylä, 2015)The problem of quantum dynamics in open systems has gained attention in recent decades and not the least due to the advances made in quantum transport in molecular systems. The main motivation behind quantum transport ... -
Control of Molecular Orbital Ordering Using a van der Waals Monolayer Ferroelectric
Amini, Mohammad; Silveira, Orlando J.; Vaňo, Viliam; Lado, Jose L.; Foster, Adam S.; Liljeroth, Peter; Kezilebieke, Shawulienu (Wiley-VCH Verlag, 2023)Two-dimensional (2D) ferroelectric materials provide a promising platform for the electrical control of quantum states. In particular, due to their 2D nature, they are suitable for influencing the quantum states of deposited ... -
Electroluminescence Rectification and High Harmonic Generation in Molecular Junctions
Tuovinen, Riku; Pavlyukh, Yaroslav (American Chemical Society, 2024)The field of molecular electronics has emerged from efforts to understand electron propagation through single molecules and to use them in electronic circuits. Serving as a testbed for advanced theoretical methods, it ...
Ellei toisin mainittu, julkisesti saatavilla olevia JYX-metatietoja (poislukien tiivistelmät) saa vapaasti uudelleenkäyttää CC0-lisenssillä.