DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/7414

Title: Morphology and structure of highly crystalline polyaniline films
Authors: SUTAR, DS
TEWARI, R
DEY, GK
GUPTA, SK
YAKHMI, JV
Keywords: atomic-force microscopy
semiconducting polymer
electronic-structure
self-organization
molecular-weight
thin-films
poly(3-hexylthiophene)
conductivity
emeraldine
monolayer
Issue Date: 2009
Publisher: ELSEVIER SCIENCE SA
Citation: SYNTHETIC METALS, 159(11), 1067-1071
Abstract: The morphology of polyaniline films grown by self-organization on a silicon substrate. modified previously with a self-assembled monolayer, has been investigated by conductive AFM, which showed conducting crystalline domains corresponding to the well-faceted crystallites scattered over the films. The film morphology Studied by conductive AFM revealed the higher conductivity crystalline domains of the film. We also use transmission electron microscopy in bright-field and dark-field imaging modes, as well as selected area electron diffraction (SAED) to study the single crystal and polycrystalline regions of the films. SAED of single crystals showed diffraction pattern with well-defined spots. Rectangular symmetry is observed for the first time for PANI single crystals. The film regions with polycrystalline domains showed diffraction pattern with sharp rings. The indexing was carried out based on the orthorhombic structure and the unit cell parameters obtained are a=4.2 angstrom, b=5.9 angstrom and c=9.8 angstrom. The nanocrystallite size distribution obtained from C-AFM is in the range of 10-60nm and corroborates well with the TEM data. (C) 2009
URI: http://dx.doi.org/10.1016/j.synthmet.2009.01.030
http://dspace.library.iitb.ac.in/xmlui/handle/10054/7414
http://hdl.handle.net/10054/7414
ISSN: 0379-6779
Appears in Collections:Article

Files in This Item:

There are no files associated with this item.

View Statistics

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback