conducting polymers

Polymer basics ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Organic polymers - few examples Polyvinyl Chloride (PVC) (-C 2 H 3 Cl-) n Vinyl chloride n(C 2 H 3 Cl) Polyethylene (-C 2 H 4 -) n Ethylene n(C 2 H 4 ) Polymer obtained Monomer unit

Classification based on temperature ,[object Object],[object Object],[object Object],H OH + H OH O CH 2 + H 2 O

Discovery of conducting polymers ,[object Object],[object Object],[object Object],[object Object],[object Object]

Conductivity ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Classification of conducting polymers

Electron-conducting polymers Polyacetylene ,[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

[object Object],[object Object]

Conduction mechanism ,[object Object],[object Object],[object Object],[object Object]

Travel of a soliton by bipolaron mechanism

Contrast between isomers of polyacetylene 170`C 10^-7 trans -77`C 10^-13 cis structure Obtainable temperature Conductivity (siemens/cm) isomer

Reasons of trans’ stability ,[object Object],[object Object],[object Object]

Stability(contd.) ,[object Object],[object Object],[object Object]

Doping in polyacetylene ,[object Object],[object Object],[object Object],[object Object],[object Object],- e + ClO 4 (-) + ClO 4 (-) + e + Na(+) (-) Na(+)

Method of doping ,[object Object],[object Object],[object Object]

Effect of dopant ,[object Object],[object Object],[object Object]

Plot of conductivity vs doping ,[object Object],200 100 0.0 0.1 0.2 Doping level (dopant/CH unit) Conductivity (S/cm)

Polypyrrole ,[object Object],[object Object],[object Object],[object Object]

Disadvantages of polypyrrole ,[object Object],[object Object],[object Object],[object Object]

Coatings ,[object Object],[object Object],[object Object]

Sensors(to gases and solns.) ,[object Object],[object Object]

Polymeric Ferroelectric RAM(PFRAM) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Biocompatible Polymers ,[object Object],[object Object]

Batteries ,[object Object],[object Object],[object Object]

Displays ,[object Object],[object Object]

Conductive Adhesive ,[object Object],[object Object]

Problem areas ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

New Developments ,[object Object],[object Object]

conducting polymers

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conducting polymers