Nanochemistry and biotechnology

Investigation of VTM-based nanowires with Au nanoparticles 
Karbivskyy V.L., Kurgan N.A., Karbovska L.I.
G.V. Kurdymov Institute for Metal Physics of the NAS of Ukraine,
03680, blvd. Vernadsky, 36, Kiev, Ukraine 
E-mail: natalkakurgan@gmail.com  

One of the intractable problems in the field of nanotechnology is to produce nano-objects of the same shape and size. To solve this problem, the most promising is the use of tobacco mosaic virus (TMV) [1]. TMV can be chemically and genetically modified to varying physical properties and it adaptation to specific applications.
In this study a new method for producing nanowires by tobacco mosaic virus and gold nanoparticles which included the preparing a stock solutions of metal source and reducing agent and the gold recovery process through several cycles of mixing solutions, in the presence of the purified and modified TMV was developed. Nanowire obtained had a size of about 50 nm in diameter and 150-400 nanometers in length. The size of the gold nanoparticles in the final stage of synthesis was about 15-20 nm.
It is established that, after application of metal nanoparticles on the surface of viruses has been a general trend of ordering virus in the clusters. The aspiration system to reduce the surface energy leads to activation of the aggregation processes: coagulation and coalescence of nanowires TMV-Au, the result of which is to the ordering and accumulation of nanowires.
Interaction nanowires with the substrate characterized C-N bond. N-C=O bond characterized binding virions with each other. The adsorption of viruses is achieved by creating hydrogen bonds between them and the surface of Si.
The studies open up prospects of development domestic technologies for producing nanomaterials based on plant viruses and metal particles to produce materials for nanoelectronics and medicine (in particular, to create cheap memory chips, high-density recording, sensor elements for various applications, process control systems, transport biologically active components in medicine). 

1.	Fan X. Z., Pomerantseva E., Gnerlich M., Brown A., Gerasopoulos K., McCarthy M., Culver J., Ghodssi R. Tobacco mosaic virus: A biological building block for micro/nano/bio systems // J. Vacuum Sci. Technol.-2013.-A31.-P. 050815-1 – 050815-24.