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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 17:45 |
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Conference: Bucharest University Faculty of Physics 2014 Meeting
Section: Physics and Technology of Renewable and Alternative Energy Sources
Title:
Analysis and synthesis of an exotic form of nanocarbon: spirographene
Authors:
A.ZUBAREV(1), Ana-Maria IORDACHE(2), I.STAMATIN(1,2)
Affiliation:
1) University of Bucharest, Faculty of Physics, Atomistilor 405, P.O 38, Bucharest-Magurele, Romania, 077125
2) University of Bucharest, Faculty of Physics, 3 Nanosae Research Center, Atomistilor 405, P.O 38, Bucharest-Magurele, Romania, 077125
E-mail
alxzubarev@gmail.com
Keywords:
Carbon,Spiroconjugated, New material, Synthesis
Abstract:
An important place in modern material science takes discovering and researching of new forms of nanocarbon. To the long-known diamond and graphite is added fullerenes, graphene and carbon nanotubes. Existence of other types of nanocarbon is discussed in scientific community. In our research, we analyzed and synthesized a new type of 2D carbon crystal – spirographene (spiro-conjugated carbon nanostructure). Spirographene, as graphene, is a 2-dimensional carbon sheet, but some of aromatics are placed perpendicular to sheet plane because of spiro-conjugation. Like it was predicted by Hoffman in 1994 for 3-dimensional analogue of spirographene (glitter) it has more metallic properties than graphene nonzero band-gap and strong anisotropy electrical properties. In the theoretical part of our research we determinate energetic structure of spirographene, electronic properties of spirographene quantum dots (band-gap, density of states and first excitation level) and simulate IR and Raman spectra for spirographene. In the second part of research, we obtained experimentally probes by electrical arc discharge in organic solutions. Depending on compounds of solution, we obtain different results from graphene and nanocarbons to spirographene. The best result gives decahydronaphthalene solution of phenol. All probes were analyzed using Raman spectroscopy, FTIR, XRD, HRTEM and DLS. During the research was observed high quality of carbon nanoparticles, uniform distribution by dimension and auto-aggregation. Obtained results can be used for sensors, nano-electronics, photovoltaics, medicine.
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