ORALS

SESSION: ElectrochemistryMonPM2-R2	Amatore International Symposium on Electrochemistry for Sustainable Development
Mon Nov, 5 2018 / Room: Copacabana B (150/1st)
Session Chairs: Huangxian Ju; Session Monitor: TBA

17:10: [ElectrochemistryMonPM212] Invited
Some Electrochemical Behavior of Self-assembled DNA-metal Nanoparticle Lattice Films
Lauro Tatsuo Kubota¹ ; Sergio Kogikoski Junior¹ ; ¹Instituto de Quimica - University of Campinas, Campinas, Brazil;
Paper Id: 267 [Abstract]

Many electrochemical processes involving self-assembled nanoparticles are subjects of intense research [1]. Most studies use drop casting of nanoparticles on an insulating barrier, however this method has an enormous drawback, since it does not offer control over the deposition process [2]. Here, we used a strategy based on the self-assembly of programmable atom equivalents consisting of AuNps with complementary DNA strands [3] to prepare the self-assembled lattice film on the electrode surface. The investigations of the properties of the films by EIS and CV will be shown. The results reveal how the 3D structure influences the electrical conduction, as well as how the impedance shows that conduction is dependent on the organization and thickness of the superlattice film. The results demonstrating the formation of a hybrid electroactive device with a well-organized structure composed of different nanoscopic entities working together are combined. In this way, we intend to show that our results pave the way for the future development of electrochemically active nanomachines based on DNA nanostructures.

References:
[1] G.P. Kissling, D.O. Miles, D.J. Fermin, Phys. Chem. Chem. Phys., 13 (2011) 21175-21185.
[2] S.L. Young, J.E. Kellon, J.E. Hutchison, J. Am. Chem. Soc., 138 (2016) 13975-13984.
[3] A.J. Senesi, D.J. Eichelsdoerfer, R.J. Macfarlane, M.R. Jones, E. Auyeung, B. Lee, C.A. Mirkin, Angew. Chem. Int. Ed., 52 (2013) 6624-6628.