The Chemistry of Poly(thiophene)

소개글

1. Introduction
Due to their numerous potential applications, organic conducting polymers have been intensively studied in the last thirty years. Particularly, poly(thiophene) lead to materials showing an important environmental and thermal stability, with good conductivity.
The maturation of the field of conducting polymers was confirmed by the awarding of the 2000 Nobel Prize in Chemistry to Alan Heeger, Alan MacDiarmid, and Hideki Shirakawa “For the discovery and development of conductive polymers.” The most notable property of these materials, electrical conductivity, results from the delocalization of electrons along the polymer backbone. However, Conductivity is not only the interesting properties of these materials respond to environmental stimulation, with dramatic color shifts in response to changes in solvents, temperature, applied potential, and binding to other molecules.

목차

1. Introduction

2. Synthesis of Poly(thiophene)
A. Chemical Synthesis
B. Electrochemical Synthesis

3. Structure and Properties of Poly(thiophene)

4. Application of Poly(thiophene)

5. Conclusions

6. References

본문내용

2. Synthesis of Poly(thiophene)s
Polymer synthesises fall broadly into the two categories.
• Condensation Polymerization (also sometimes called Step-Growth Polymerization)
• Addition Polymerization (also sometimes called Chain-Growth Polymerization)

Synthesises also fall broadly into two other classes.
• Chemical
• Electrochemical

Nearly all Electrochemical synthesises are Addition Polymerizations, and many Chemical synthesises are Condensation Polymerization.
Condensation Polymerizations generally involve loss or elimination of a chemical species resulting from the reaction of end groups on monomer chains. The most famous example is poly(esters).
Addition polymerizations involve the well known chain initiation, chain propagation and chain termination steps generating a highly reactive, radical ion.

A. Chemical Synthesis
Chemical synthesis offers two advantages compared with electrochemical synthesis of PTs

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