Fabrication of multi-structure nanocarbons from carbon xerogel: a unique scaffold towards bioimaging Sourov Chandra and Prof. P. Pramanik Department of Chemistry, Indian Institute of Technology Kharagpur, India ABSTRACT
IMPORTANCE
A novel route has been developed to fabricate different carbon nanostructures having individual morphology of carbon nanoparticles: nanofullerene, nanocube, nanoleaf and porous nanorods, through the combustion of carbon xerogel with nitric acid. These fabricated nanostructures exhibited bright green fluorescence under the exposure of UV light.
Successful synthesis of carbon nano structures from carbon xerogel have been done for the first time to best of our knowledge. Here we can achieve several individual nanostructures having different morphologies, such as nanocube, nanofullerene, nanoleaf, porous nanorod, and mesoporous nanocarbons only with varying the concentration of nitric acid. All of those nanostructures can emit bright green fluorescent light under the expenditure of UV-light and hence can be useful material for bioimaging and drug delivery. Finally we have demonstrated the mechanism about the generation of nanoparticles in course of the refluxation reaction.
RESULTS & DISCUSSIONS
(a, b)TEM Image and the SAED pattern of MCNP–3. (c), (d) TEM, (e) HR-TEM and (f) SAED pattern of MCNP-3 after prolonging the reaction for 7 days
The FE-SEM images of (a) MCNP-4, (b) MCNP-3, (c) MCNP-2 and (d) MCNP-1.The inset images are their corresponding high resolution images.
Digital camera images of different as synthesized supernatant solutions
PROBABLE MECHANISM
Confocal microscopic image of MCNP-3 treated S. aureus in (a) bright field and (b) UV excitation with 400 nm excitation wavelength; (c) and (d) show the corresponding fluorescence microscopic images at 350 nm excitation wavelength.
REFERENCE Sourov Chandra, et al., Chem. Commun., 2011, 47, 8587-8589.