Studies on morphology of polyaniline films formed at liquid–liquid and solid–liquid interfaces at 25 and 5 °C, respectively, and effect of doping

• Published in: Colloid and polymer science Vol. 292; no. 5; pp. 1079 - 1089
• Main Authors: Waghmode, Babasaheb J., Patil, Sagar H., Jahagirdar, Mandar M., Patil, Virendra S., Waichal, Rupali P., Malkhede, Dipalee D., Sathaye, Shivaram D., Patil, Kashinath R.
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-05-2014; Springer; Springer Nature B.V
• Subjects: Applied sciences; Characterization and Evaluation of Materials; Chemistry; Chemistry and Materials Science; Complex Fluids and Microfluidics; Exact sciences and technology; Food Science; Nanotechnology and Microengineering; Organic polymers; Original Contribution; Physical Chemistry; Physicochemistry of polymers; Polymer Sciences; Polymers with particular properties; Preparation, kinetics, thermodynamics, mechanism and catalysts; Soft and Granular Matter; Thin films; Nanosheets; Liquid–liquid interface; Self-assembly; Interfacial polymerization; Solid–liquid interface; Polyaniline; Nanorods; Liquid solid interface; Solid-liquid interface; Liquid-liquid interface; Nanostructure; Experimental study; Thin film; Conducting polymers; Heterogeneous polymerization; Electrochemical properties; Morphology; Preparation; Liquid liquid interface; Doped polymer; Polyaniline Thin films; Oxidative polymerization; Interface reaction; Formation mechanism; Nanostructured materials; Aniline polymer
• ISSN: 0303-402X; 1435-1536
• DOI: 10.1007/s00396-013-3150-3

It is well accepted that the morphology of the nanomaterials has great effect on the properties and hence their applications. Therefore, morphology of materials has become a focus of research in the scientific world. The present study shows that interfacial polymerization and subsequent self-assembly provides a control over the morphology, nanorod/nanosheet, of polyaniline (PANI) films synthesized by liquid–liquid interface reaction technique and solid–liquid interface reaction technique. The synthesized PANI films and its particulate structure are characterized by using various spectroscopic techniques such as UV–visible, ATR-IR, Raman and XPS. The study confirmed the formation, the structure, the size and shape of particles and morphology of PANI by using analytical techniques namely, SAED, SEM and TEM. An important observation is that doping with HCl significantly improves the nanorod formation at the interface. The doped PANI electrode exhibits a higher area with rectangular shape in CV cycle and better cycle stability when compared with the performance of undoped PANI films. We believe that the results of these studies can give valuable leads to manoeuvre formation of PANI films with desired morphology for various applications.
Figure
Time and temperature-dependent morphology of PANI layer leading to the formation of one/two-dimensional structures namely, PANI rods/sheets, is achieved by monitoring of self-assembly of nano particulate film formed at liquid–liquid/solid–liquid interfaces