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Related Concept Videos

Complexation Equilibria: Factors Influencing Stability of Complexes01:09

Complexation Equilibria: Factors Influencing Stability of Complexes

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In complexation reactions, metal cations are the electron pair acceptors, and the ligands are the electron pair donors. The stability of the metal complexes depends primarily on the complexing ability of the central metal ion and the nature of the ligands. Generally, the complexing ability of the metal ion depends on the size and charge of the ion. As the metal ion size increases, the stability of the metal complexes decreases, provided that the valency of the metal ion and the ligands remain...
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Recently, the development of olefin metathesis polymerization advanced the field of polymer synthesis. Simply put, the reorganization of substituents on their double bonds between two olefins in the presence of a catalyst is known as the olefin metathesis reaction. The use of metathesis reaction for polymer synthesis is called olefin metathesis polymerization.
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In complexation reactions, metal atoms or cations interact with ligands to form donor-acceptor adducts called metal complexes. Ligands that bind through one donor site are monodentate, ligands with two donor sites are bidentate, and those with more than two donor sites are polydentate ligands. For example, ethylene diamine is a bidentate ligand that binds through two nitrogen donor atoms, forming a five-membered ring. EDTA is a polydentate ligand that binds through four oxygen and two nitrogen...
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A type of Lewis acid-base chemistry involves the formation of a complex ion (or a coordination complex) comprising a central atom, typically a transition metal cation, surrounded by ions or molecules called ligands. These ligands can be neutral molecules like H2O or NH3, or ions such as CN− or OH−. Often, the ligands act as Lewis bases, donating a pair of electrons to the central atom. These types of Lewis acid-base reactions are examples of a broad subdiscipline called coordination...
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Related Experiment Video

Updated: Mar 11, 2026

Amide Coupling Reaction for the Synthesis of Bispyridine-based Ligands and Their Complexation to Platinum as Dinuclear Anticancer Agents
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Efficient Cyclometalated Platinum(II) Complex with Superior Operational Stability.

Zhi-Qiang Zhu1, Kody Klimes1, Sean Holloway1

  • 1Material Science and Engineering, Arizona State University, Tempe, AZ, 85287, USA.

Advanced Materials (Deerfield Beach, Fla.)
|November 29, 2016
PubMed
Summary

A new platinum(II) complex (PtN3N) functions as a highly efficient and stable phosphorescent emitter. This breakthrough overcomes commercialization barriers for platinum complexes in various applications.

Keywords:
emitteroperational stabilityorganic light emitting diodesphosphorescencesplatinum(II) complex

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Area of Science:

  • Materials Science
  • Organic Chemistry
  • Photophysics

Background:

  • Platinum(II) complexes are promising phosphorescent emitters.
  • Commercialization of these complexes is hindered by stability and efficiency limitations.

Purpose of the Study:

  • To develop a tetradentate cyclometalated platinum(II) complex (PtN3N) as an efficient and stable phosphorescent emitter.
  • To demonstrate the potential of PtN3N for commercial applications.

Main Methods:

  • Synthesis and characterization of a tetradentate cyclometalated Pt(II) complex (PtN3N).
  • Fabrication and testing of a device utilizing the PtN3N complex as a phosphorescent emitter.

Main Results:

  • The PtN3N device achieved an estimated LT97 of 2057 hours at 1000 cd m-2.
  • Maintained a high external quantum efficiency of 15.3% at high brightness.
  • Demonstrated performance exceeding previous limitations for Pt complex commercialization.

Conclusions:

  • The developed PtN3N complex is an efficient and stable phosphorescent emitter.
  • This research overcomes a key technical barrier for the commercialization of platinum complexes.
  • PtN3N complexes show significant potential for diverse applications.