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Fabrication, characterization and chemical modification of anthracene based nanostructures

Published online by Cambridge University Press:  31 January 2011

Alka Gupta ,
Shubhra Goel ,
Ranjana Mehrotra  and
H.C. Kandpal
Alka Gupta
Affiliation:
Department of Chemistry, Dyal Singh College, Delhi University, New Delhi 110003, India
Shubhra Goel
Affiliation:
Department of Chemistry, Dyal Singh College, Delhi University, New Delhi 110003, India
Ranjana Mehrotra*
Affiliation:
Optical Radiation Standards, National Physical Laboratory, New Delhi 110012, India
H.C. Kandpal
Affiliation:
Optical Radiation Standards, National Physical Laboratory, New Delhi 110012, India
*
a)Address all correspondence to this author. e-mail: ranjana@mail.nplindia.ernet.in
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Abstract

Anthracene based nano/microstructures of different sizes and shapes like tubes/fibers are synthesized using a simple open air chemical vapor deposition technique. Thermal solid phase reaction between anthracene 9-carboxylic acid and calcium oxide reported recently [H. Liu et al., J. Am. Chem. Soc.125, 10794 (2003)] is used to obtain organic molecular nanostructures. The products of temperature (320 °C) induced reaction get deposited on the substrates placed inside the reaction chamber as well as on the inner walls in different nano/micrometer forms, tubes/rods/fibers and having different sizes. Structural characterization of the reaction products is performed using optical microscopy, field emission electron microscopy (FE-SEM) and transmission electron microscopy (TEM). Chemical composition studies are conducted using infrared (IR), nuclear magnetic resonance (NMR), and gas chromatography (GC)-Mass spectroscopy, as well as elemental analysis. IR studies of the nanostructures obtained on the substrate using IR spectroscopy reveal the presence of C=O groups, the confirmatory evidence of which is obtained using energy dispersive x-ray spectroscopic (EDS) analysis. Interaction study of the C=O groups with ammonia vapor is conducted and resulting changes are monitored using Fourier transform infrared (FTIR). A strong covalent modification of anthracene based structures by exposure to ammonia molecules is indicated.

Keywords

Chemical vapor deposition (CVD) (deposition)MorphologyInfrared (IR) spectroscopy
Type
Articles
Information
Journal of Materials Research , Volume 22 , Issue 10 , October 2007 , pp. 2719 - 2726
Copyright
Copyright © Materials Research Society 2007

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