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Related Concept Videos

Complexation Equilibria: Overview01:23

Complexation Equilibria: Overview

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Complexation reactions take place when dative or coordinate covalent bonds form between metal ions and ligands. The compounds formed in these reactions are called coordination compounds. The number of bonds formed between the metal ion and the ligands is called its coordination number. Generally, most metal ions in an aqueous solution are solvated by water molecules and thus exist as aqua complexes.
The equilibrium constant of the complexation reaction is represented as the formation constant...
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Coordination Compounds and Nomenclature02:54

Coordination Compounds and Nomenclature

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In most main group element compounds, the valence electrons of the isolated atoms combine to form chemical bonds that satisfy the octet rule. For instance, the four valence electrons of carbon overlap with electrons from four hydrogen atoms to form CH4. The one valence electron leaves sodium and adds to the seven valence electrons of chlorine to form the ionic formula unit NaCl (Figure 1a). Transition metals do not normally bond in this fashion. They primarily form coordinate covalent bonds, a...
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Polymers02:34

Polymers

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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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Cationic Chain-Growth Polymerization: Mechanism00:57

Cationic Chain-Growth Polymerization: Mechanism

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The cationic polymerization mechanism consists of three steps: initiation, propagation, and termination. In the initiation step of the polymerization process, the π bond of a monomer gets protonated by the Lewis acid catalyst, which is formed from boron trifluoride and water. The protonation of the π bond generates a carbocation stabilized by the electron‐donating group. In the propagation step, the π bond of the second monomer acts as a nucleophile and attacks the...
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Polymers: Molecular Weight Distribution01:10

Polymers: Molecular Weight Distribution

3.5K
For any given polymer, the weight average molecular weight (Mw) is higher than, if not equal to, the number average molecular weight (Mn). The only situation in which the weight average molecular weight and the number average molecular weight are equal is when a polymer consists only of chains with equal molecular weight. However, this never happens in a synthetic polymer, since it is difficult to control the polymerization process up to a molecular level with accuracy to a hundred percent.
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Anionic Chain-Growth Polymerization: Overview01:20

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The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
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Synthesis and Characterization of Supramolecular Colloids
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Aqueous coordination polymer complexes: From colloidal assemblies to bulk materials.

Jiahua Wang1, Tiemei Lu2, Yuehua Li3

  • 1Department of Radiology, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai 200233, China; Radboud University, Institute for Molecules and Materials, Heyendaalseweg 135, 6525 AJ Nijmegen, the Netherlands.

Advances in Colloid and Interface Science
|July 29, 2023
PubMed
Summary
This summary is machine-generated.

This review explores water-soluble 1D coordination polymers and their assemblies. These advanced materials offer tunable structures for applications in aqueous systems, including smart materials and therapeutics.

Keywords:
Aqueous systemsCoordination polymerHydrogelsLiquid-liquid phase separationSelf-assemblySupramolecular chemistry

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Area of Science:

  • Materials Science
  • Polymer Chemistry
  • Nanotechnology

Background:

  • 1-dimensional (1D) coordination polymers offer unique structural and functional control via metal-ligand bonds.
  • Water-soluble variants are crucial for applications in aqueous environments like biological and medical fields.

Purpose of the Study:

  • To review recent advancements in the design and application of water-soluble 1D coordination polymers and assemblies.
  • To highlight their potential in developing functional materials and therapeutic agents.

Main Methods:

  • Overview of design strategies for controlling 1D coordination polymer structures.
  • Discussion of colloidal assemblies (nanoparticles, nanofibers, micelles, vesicles).
  • Exploration of fabricated bulk materials (liquid condensates, security ink, hydrogel actuators, smart fabrics).

Main Results:

  • Progress in tailoring 1D coordination polymer architectures for specific functions.
  • Demonstration of diverse self-assembled structures from nanoparticles to complex materials.
  • Identification of key applications in areas like smart fabrics and security inks.

Conclusions:

  • Water-soluble 1D coordination polymers represent a versatile platform for advanced functional materials.
  • Their unique properties enable innovative applications in aqueous systems, with significant future potential.
  • Further research in aqueous coordination polymers promises breakthroughs in materials science and medicine.