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Related Concept Videos

Polymers02:34

Polymers

37.6K
The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Polymer Classification: Architecture01:14

Polymer Classification: Architecture

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Polymers are classified as linear or branched on the basis of their chain architecture. The polymer chains in linear polymers have a long chain-like structure with minimal to no branching at all. Even if a polymer features large substituent groups on the monomer, which appear as branches to the skeleton, it is not considered a branched polymer. A branched polymer contains secondary polymer chains that arise from the main polymer chain. The branching occurs when the polymer growth shifts from...
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Types of Step-Growth Polymers: Polyesters01:20

Types of Step-Growth Polymers: Polyesters

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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
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Ziegler–Natta Chain-Growth Polymerization: Overview01:17

Ziegler–Natta Chain-Growth Polymerization: Overview

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Ziegler–Natta polymerization is another form of addition or chain‐growth polymerization used for synthesizing linear polymers over branched polymers. The catalyst used for polymerization is the Ziegler–Natta catalyst, named after Karl Ziegler and Giulio Natta, who developed it in 1953. This catalyst is an organometallic complex of titanium tetrachloride and triethyl aluminum, with the active form of the catalyst being an alkyl titanium compound. Using the Ziegler–Natta...
3.5K
Types of Semiconductors01:20

Types of Semiconductors

957
Intrinsic semiconductors are highly pure materials with no impurities. At absolute zero, these semiconductors behave as perfect insulators because all the valence electrons are bound, and the conduction band is empty, disallowing electrical conduction. The Fermi level is a concept used to describe the probability of occupancy of energy levels by electrons at thermal equilibrium. In intrinsic semiconductors, the Fermi level is positioned at the midpoint of the energy gap at absolute zero. When...
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Characteristics and Nomenclature of Homopolymers01:00

Characteristics and Nomenclature of Homopolymers

3.3K
Polymers that are made up of identical monomer units are called homopolymers. Only one repeating unit is involved in the construction of the homopolymer structure. For example, as depicted in Figure 1, polypropylene is a homopolymer constituted of propylene monomers. Here, the only repeating unit in the polymer chain is propylene.
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A Simple and Scalable Fabrication Method for Organic Electronic Devices on Textiles
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Polymer Electronics, Quo Vadis?

Ryan C Chiechi1, Jan C Hummelen1

  • 1Stratingh Institute for Chemistry and Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.

ACS Macro Letters
|May 24, 2022
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Summary
This summary is machine-generated.

Conjugated polymers are key to organic photovoltaic (OPV) devices. Future OPV research focuses on improving efficiency and cost by exploring charge, dielectric properties, and new synthetic methods beyond traditional band-gaps.

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Area of Science:

  • Polymer Electronics
  • Organic Photovoltaics
  • Materials Science

Background:

  • Conjugated polymers have been researched for over 30 years.
  • Organic photovoltaic (OPV) devices are emerging as a potential alternative to inorganic devices.
  • Polymers are increasingly used at interfaces in thin-film OPV devices, following the success of poly(ethylenedioxythiophene)/poly(styrenesulfonate) (PEDOT/PSS).

Purpose of the Study:

  • To explore the future of conjugated polymers in organic electronics.
  • To investigate strategies for developing OPV devices that can compete with inorganic counterparts in efficiency and cost.
  • To shift focus from band-gaps to charge and dielectric properties for improved OPV performance.

Main Methods:

  • Review of existing research in conjugated polymers and OPV.
  • Analysis of the role of polymers at interfaces in thin-film electronic devices.
  • Exploration of new synthetic methodologies for advanced polymer materials.

Main Results:

  • The development of efficient and cost-effective OPV devices is crucial for the future of polymer electronics.
  • Polymers play a significant role not only as light-harvesting materials but also at interfaces within OPV devices.
  • Current research trends emphasize charge and dielectric properties, alongside novel synthetic approaches, to advance OPV technology.

Conclusions:

  • The advancement of organic photovoltaic devices relies heavily on innovations in conjugated polymer science.
  • Future research should prioritize optimizing charge transport, dielectric characteristics, and synthetic routes for enhanced OPV performance.
  • The integration of polymers at interfaces represents a key strategy for improving thin-film electronic device functionality.