Synthesis, characterization and antibacterial activity of polyaniline/Pt–Pd nanocomposite

Pt colloid and Pt–Pd colloid, pristine polyaniline, polyaniline/Pt nanocomposite and polyaniline/Pt–Pd nanocomposite were synthesized by simple chemical method. They were characterized by UV–Vis, FT-IR, XRD, TGA, SEM, HR-SEM and HR-TEM with EDAX techniques. The results proved that there is a strong...

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Bibliographic Details
Published in:European journal of medicinal chemistry 2014-01, Vol.72, p.18-25
Main Authors: Boomi, Pandi, Prabu, Halliah Gurumallesh, Mathiyarasu, Jayaraman
Format: Article
Language:English
Subjects:
Aniline Compounds - chemistry
Anti-Bacterial Agents - chemical synthesis
Anti-Bacterial Agents - chemistry
Anti-Bacterial Agents - pharmacology
Antibacterial activity
Characterization
Dose-Response Relationship, Drug
Microbial Sensitivity Tests
Nanocomposites - chemistry
Organometallic Compounds - chemical synthesis
Organometallic Compounds - chemistry
Organometallic Compounds - pharmacology
Palladium - chemistry
Particle Size
Platinum - chemistry
Polyaniline
Pt–Pd nanocomposite
Spectrophotometry, Ultraviolet
Spectroscopy, Fourier Transform Infrared
Streptococcus - drug effects
Structure-Activity Relationship
Surface Properties
Synthesis
Temperature
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Summary:Pt colloid and Pt–Pd colloid, pristine polyaniline, polyaniline/Pt nanocomposite and polyaniline/Pt–Pd nanocomposite were synthesized by simple chemical method. They were characterized by UV–Vis, FT-IR, XRD, TGA, SEM, HR-SEM and HR-TEM with EDAX techniques. The results proved that there is a strong interaction between metal nanoparticles (Pt–Pd) and polyaniline chains. This interaction creates changes in the backbone chain of polyaniline/Pt–Pd nanocomposite when compared to pristine polyaniline. The synthesized materials were evaluated for antibacterial activity, minimal inhibitory concentration and minimal bactericidal concentration. The results indicated that the nanocomposites exhibited improved antibacterial activity when compared to pristine polyaniline and individual metal colloids. This is the first report on the chemical synthesis of polyaniline/Pt–Pd nanocomposite, which exhibits antibacterial activity at micro molar concentration levels. [Display omitted] •New method of synthesizing polyaniline/Pt–Pd nanocomposite.•Nano size of the composite characterized by HR-SEM and HR-TEM.•Improved antibacterial activity of polyaniline/Pt–Pd nanocomposite than polyaniline/Pt nanocomposite and pristine polyaniline.
ISSN:0223-5234
1768-3254
DOI:10.1016/j.ejmech.2013.09.049