Issue 93, 2016, Issue in Progress
From the journal:

RSC Advances

Gold nanocluster formation using morpholino oligomer as template and assembly agent within hybrid bio-nanomaterials†‡

Saumen Chakraborty,‡*a   Reginaldo C. Rocha,*a   Anil Desireddy,a   Kateryna Artyushkova,b   Timothy C. Sanchez,c   Albert T. Perry,b   Plamen Atanassovb  and  Jennifer S. Martinez*ad  

* Corresponding authors

a Center for Integrated Nanotechnologies, Materials Physics and Applications Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
E-mail: saumenc@olemiss.edu, rcrocha@lanl.gov

b Center for Micro-Engineered Materials, Department of Chemical & Biological Engineering, University of New Mexico, Advanced Materials Laboratory, Albuquerque, NM 87106, USA

c Bioenergy and Biome Sciences, Bioscience Division, Los Alamos National Laboratory, Los Alamos, NM 87545, USA

d Institute for Materials Science, Los Alamos National Laboratory, Los Alamos, NM 87545, USA
E-mail: jenm@lanl.gov

Abstract

We report the use of a phosphorodiamidate morpholino oligomer as a DNA analogue to template the assembly of a gold nanocluster possessing 6 Au atoms and a diameter of ∼0.9 nm. Spectroscopic characterization indicates that Au preferentially binds to the phosphorodiamidate backbone as opposed to the nucleobases. A high fraction of Au(I) relative to Au(0) is observed by X-ray photoelectron spectroscopy and electrochemistry. This new nanocluster was co-assembled with carbon nanotubes and a fuel-cell enzyme, bilirubin oxidase. The hybrid bio-nanoassembly can reduce O2 to H2O without changing the overpotential of the enzyme.

Graphical abstract: Gold nanocluster formation using morpholino oligomer as template and assembly agent within hybrid bio-nanomaterials

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Article information

DOI
https://doi.org/10.1039/C6RA16891D
Article type
Paper
Submitted
01 Jul 2016
Accepted
08 Sep 2016
First published
09 Sep 2016

RSC Adv., 2016,6, 90624-90630

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Gold nanocluster formation using morpholino oligomer as template and assembly agent within hybrid bio-nanomaterials

S. Chakraborty, R. C. Rocha, A. Desireddy, K. Artyushkova, T. C. Sanchez, A. T. Perry, P. Atanassov and J. S. Martinez, RSC Adv., 2016, 6, 90624 DOI: 10.1039/C6RA16891D

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