Book contents
- Frontmatter
- Contents
- Preface
- Acknowledgements
- List of symbols and units
- List of abbreviations and acronyms
- 1 Introduction to electrochromism
- 2 A brief history of electrochromism
- 3 Electrochemical background
- 4 Optical effects and quantification of colour
- 5 Kinetics of electrochromic operation
- 6 Metal oxides
- 7 Electrochromism within metal coordination complexes
- 8 Electrochromism by intervalence charge-transfer coloration: metal hexacyanometallates
- 9 Miscellaneous inorganic electrochromes
- 10 Conjugated conducting polymers
- 11 The viologens
- 12 Miscellaneous organic electrochromes
- 13 Applications of electrochromic devices
- 14 Fundamentals of device construction
- 15 Photoelectrochromism
- 16 Device durability
- Index
- Plate Section
- References
10 - Conjugated conducting polymers
Published online by Cambridge University Press: 10 August 2009
- Frontmatter
- Contents
- Preface
- Acknowledgements
- List of symbols and units
- List of abbreviations and acronyms
- 1 Introduction to electrochromism
- 2 A brief history of electrochromism
- 3 Electrochemical background
- 4 Optical effects and quantification of colour
- 5 Kinetics of electrochromic operation
- 6 Metal oxides
- 7 Electrochromism within metal coordination complexes
- 8 Electrochromism by intervalence charge-transfer coloration: metal hexacyanometallates
- 9 Miscellaneous inorganic electrochromes
- 10 Conjugated conducting polymers
- 11 The viologens
- 12 Miscellaneous organic electrochromes
- 13 Applications of electrochromic devices
- 14 Fundamentals of device construction
- 15 Photoelectrochromism
- 16 Device durability
- Index
- Plate Section
- References
Summary
Introduction to conjugated conducting polymers
Historical background and applications
The history of conjugated conducting polymers or ‘synthetic metals’ can be traced back to 1862, when Letheby, a professor of chemistry in the College of London Hospital, reported the electrochemical synthesis of a ‘thick layer of dirty bluish-green pigment’ (presumably a form of ‘aniline black’ or poly(aniline)) by oxidation of aniline in sulfuric acid at a platinum electrode. However, widespread interest in these fascinating materials did not take place until after 1977, following the discovery of the metallic properties of poly(acetylene), which led to the award of the 2000 Nobel Prize in Chemistry to Shirakawa, Heeger and MacDiarmid. Since 1977, electroactive conducting polymers have been intensively investigated for their conducting, semiconducting and electrochemical properties. Numerous electronic applications have been proposed and some realised, including electrochromic devices (ECDs), electroluminescent organic light-emitting diodes (OLEDs), photovoltaic elements for solar-energy conversion, sensors and thin-film field-effect transistors.
Types of electroactive conducting polymers
Poly(acetylene), (CH)x, is the simplest form of conjugated conducting polymer, with a conjugated π system extending over the polymer chain. Its electrical conductivity exhibits a twelve order of magnitude increase when doped with iodine. However, due to its intractability and air sensitivity, poly(acetylene) has seen few applications and most research on conjugated conductive polymers has been carried out with materials derived from aromatic and heterocyclic aromatic structures.
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- Electrochromism and Electrochromic Devices , pp. 312 - 340Publisher: Cambridge University PressPrint publication year: 2007
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