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 a...

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Main Author: Parviainen, Teemu
Other Authors: Matemaattis-luonnontieteellinen tiedekunta, Faculty of Sciences, Fysiikan laitos, Department of Physics, University of Jyväskylä, Jyväskylän yliopisto
Format: Master's thesis
Language:eng
Published: 2013
Subjects:
Online Access: https://jyx.jyu.fi/handle/123456789/41649
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author Parviainen, Teemu
author2 Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_facet Parviainen, Teemu Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto Parviainen, Teemu Matemaattis-luonnontieteellinen tiedekunta Faculty of Sciences Fysiikan laitos Department of Physics University of Jyväskylä Jyväskylän yliopisto
author_sort Parviainen, Teemu
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description 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 %.
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spellingShingle Parviainen, Teemu Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements dna conductivity nanoelectronics dna-electronics molecular electronics nanoparticles G-guadruplex Fysiikka Physics 4021 DNA nanoelektroniikka molekyylielektroniikka
title Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements
title_full Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements
title_fullStr Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements
title_full_unstemmed Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements
title_short Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements
title_sort metal nanoparticle g4 dna conjugates and their dc conductivity measurements
title_txtP Metal-nanoparticle-G4-DNA conjugates and their DC conductivity measurements
topic dna conductivity nanoelectronics dna-electronics molecular electronics nanoparticles G-guadruplex Fysiikka Physics 4021 DNA nanoelektroniikka molekyylielektroniikka
topic_facet 4021 DNA Fysiikka G-guadruplex Physics conductivity dna dna-electronics molecular electronics molekyylielektroniikka nanoelectronics nanoelektroniikka nanoparticles
url https://jyx.jyu.fi/handle/123456789/41649 http://www.urn.fi/URN:NBN:fi:jyu-201305301859
work_keys_str_mv AT parviainenteemu metalnanoparticleg4dnaconjugatesandtheirdcconductivitymeasurements