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Related Concept Videos

Ionic Radii03:10

Ionic Radii

33.6K
Ionic radius is the measure used to describe the size of an ion. A cation always has fewer electrons and the same number of protons as the parent atom; it is smaller than the atom from which it is derived. For example, the covalent radius of an aluminum atom (1s22s22p63s23p1) is 118 pm, whereas the ionic radius of an Al3+ (1s22s22p6) is 68 pm. As electrons are removed from the outer valence shell, the remaining core electrons occupying smaller shells experience a greater effective nuclear...
33.6K
Ionic Bonds00:42

Ionic Bonds

131.1K
Overview
When atoms gain or lose electrons to achieve a more stable electron configuration they form ions. Ionic bonds are electrostatic attractions between ions with opposite charges. Ionic compounds are rigid and brittle when solid and may dissociate into their constituent ions in water. Covalent compounds, by contrast, remain intact unless a chemical reaction breaks them.
Opposing Charges Hold Ions Together in Ionic Compounds
Ionic bonds are reversible electrostatic interactions between ions...
131.1K
Molecular and Ionic Solids02:54

Molecular and Ionic Solids

20.2K
Crystalline solids are divided into four types: molecular, ionic, metallic, and covalent network based on the type of constituent units and their interparticle interactions.
Molecular Solids
Molecular crystalline solids, such as ice, sucrose (table sugar), and iodine, are solids that are composed of neutral molecules as their constituent units. These molecules are held together by weak intermolecular forces such as London dispersion forces, dipole-dipole interactions, or hydrogen bonds, which...
20.2K
Solubility of Ionic Compounds02:55

Solubility of Ionic Compounds

68.3K
Solubility is the measure of the maximum amount of solute that can be dissolved in a given quantity of solvent at a given temperature and pressure. Solubility is usually measured in molarity (M) or moles per liter (mol/L). A compound is termed soluble if it dissolves in water.
68.3K
Ionic Crystal Structures02:42

Ionic Crystal Structures

17.1K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.1K
Ionic Compounds: Formulas and Nomenclature03:34

Ionic Compounds: Formulas and Nomenclature

87.8K
An element composed of atoms that readily lose electrons (a metal) can react with an element composed of atoms that readily gain electrons (a nonmetal) to produce ions through complete electron transfer. The compound formed by this transfer is stabilized by the electrostatic attractions (ionic bonds) between the oppositely charged ions.
87.8K

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Pretreatment of Lignocellulosic Biomass with Low-cost Ionic Liquids
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Dark Ionic Liquid for Flexible Optoelectronics.

Yonglin He1, Xiao-Qi Xu1, Shanzhi Lv1

  • 1Department of Chemistry , Renmin University of China , Beijing 100872 , China.

Langmuir : the ACS Journal of Surfaces and Colloids
|August 9, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed a novel photoresponsive ionic liquid for flexible optoelectronics. This new material functions as a light detector, adaptable for specialized sensing in bending states, overcoming design challenges in flexible liquid optoelectronics.

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Area of Science:

  • Materials Science
  • Optoelectronics
  • Ionic Liquids

Background:

  • Flexible optoelectronics are crucial for applications like rescue equipment and endoscopy.
  • Ionic liquids offer unique properties such as flexibility and self-healing, but molecular design for photoresponsive applications remains a challenge.

Purpose of the Study:

  • To design and synthesize a novel photoresponsive ionic liquid.
  • To explore its potential as an intrinsic flexible liquid optoelectronic material.
  • To demonstrate its application as a flexible light detector.

Main Methods:

  • Covalent linkage of an imidazole-based ionic liquid with a polypyrrole oligomer via alkyl chains.
  • Characterization of optical absorption across visible to near-infrared spectrum.
  • Evaluation of thermal responsiveness and energy transfer mechanisms.
  • Assessment of fluidic nature and stability at room temperature.
  • Fabrication and testing of the ionic liquid as a flexible light detector.

Main Results:

  • The synthesized ionic liquid exhibits broad light absorption (visible to near-infrared).
  • The imidazole moiety provides electrical conductivity and thermal responsiveness, while polypyrrole acts as a light-harvesting antenna.
  • The alkyl linker facilitates controlled energy transfer.
  • The material maintains fluidic nature at room temperature with negligible aggregation.
  • Successful demonstration as a flexible light detector adaptable to bending states.

Conclusions:

  • A novel imidazole-based photoresponsive ionic liquid has been successfully synthesized and characterized.
  • This material overcomes previous design limitations, enabling its use as intrinsic flexible liquid optoelectronics.
  • The developed ionic liquid shows promise for advanced flexible light detection applications.