Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1651002 | Materials Letters | 2008 | 4 Pages |
Abstract
We present the formation of nano-structures especially nano-rod and nano-particles of polyaniline (PANI) using Langmuir–Blodgett (LB) technique of molecular deposition. Decrease in the pH of the sub-phase of LB trough increases level of doping (protonation) of polyaniline emeraldine base to emeraldine salt and causes doping induced nano-structure formation. High resolution transmission electron microscopy reveals that anisotropic rod like nano-structures of PANI of diameter less than 50 nm are formed at pH 1 while pH 3 induces the formation of dispersed nano-particle of diameter 15 nm. On the contrary, connected lump (aggregation) type nano-structures of PANI are formed at a higher value of pH 6.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Sabapathy Manigandan, Saptarshi Majumder, Saibal Ganguly, Kajari Kargupta,