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Conducting Polymers: Definition, Examples, Properties and Applications

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What are Conducting Polymers? As the name suggests organic polymers that conduct electricity are known as conducting polymers. They are also known as intrinsically conducting polymers (ICPs) and they have alternating single and double bonds along the polymer backbone (conjugated bonds) or that are composed of aromatic rings such as Phenylene, naphthalene, anthracene, pyrrole, and thiophene which are connected through carbon-carbon single bonds. Examples: Polyacetylene, Polypyrrole, Polyaniline, etc What is the reason behind conducting nature of these polymers? Conducting polymers comes in two forms that are doped conducting polymers and non-doped conducting polymers. The conductivity of non-doped conjugated polymers is due to the existence of a conductivity band similar to a metal. In a conjugated polymer, three of the four valence electrons form strong sigma bonds through sp² hybridization where electrons are strongly localized. The remaining unpaired electron of each carbon atom re
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Crime Scene: Definition, Types and Characteristics

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What is a Crime Scene ? A place where the crime is committed or where the maximum physical evidence related to crime is found is known as a crime scene. A crime scene is a starting point of the investigation which provides information about the suspect and the victim. This helps to reconstruct the crime and fast resolution of the case. It is noted that the crime scene is not limited to a single place but may extend to a wider area depending upon the nature of the crime committed. For example, In a murder case where murder is done at one place and the body is disposed on another place. In this case, we have two crime scenes that give information about the crime. Types of Crime Scene Based on evidence found on the crime scene: 1. Primary Crime Scene The crime scene where the actual crime occurred or where more usable pieces of evidence were found is known as the primary crime scene. For example, A murder scene, theft, assault, etc. 2. Secondary Crime Scene The crime scene which is some
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Green Solvents: Definition, Examples and Types of Green Solvents

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What are Green Solvents? Green solvents, also known as environmentally friendly bio solvents which are derived from the processing of crops. There are many types of green solvents like ionic liquids, supercritical fluids, water, and supercritical water. These green solvents are way much eco-friendly, less toxic, less hazardous than traditional volatile organic compounds (VOCs). For example, Ethyl lactate Ethyl lactate is a green solvent derived from processing corn. Ethyl lactate is the ester of lactic acid which is used as solvents in the paints and coating industry. Types of Green Solvents 1. Supercritical Fluids A compound that exists above its critical pressure (Pc) and above its critical temperature (Tc) is known as supercritical fluid or SCF. Their chemical and physical properties are between those of a gas and a liquid. Phase diagram showing the supercritical fluid region Supercritical liquids are the perfect replacement for organic solvents for industrial and lab processes d
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