Research any topic before you write.

Find related topics. | Discover entities. | See connections. | Build a topical map.

Crown ether: History, Applications & Measurement

In organic chemistry, crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups (R−O−R'). The most common crown ethers are cyclic oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e., −CH2CH2O−. Important members of this series are the tetramer (n = 4), the pentamer (n = 5), and the hexamer (n =…

Language: English [EN]
Use the mouse wheel or two fingers (on touchscreens) to zoom in and out of the map.
100%
More settings
100% 100% 100% 100% 100%

Crown ether topic overview

The analysis highlights History, Applications and Measurement as prominent areas in the source structure around Crown ether. 1 topic appears in more than one source area, which can help identify connections that are less obvious in a linear reading.

Related topics
69
Source areas
4
Connected nodes
74
Extracted relationships
27
Concept neighborhoods
25
Bridge connections
74

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 28 topics
Affinity for cations · 19 topics
History · 14 topics
Pharmaceutical applications · 9 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

History

Affinity for cations

Pharmaceutical applications

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Crown ether connects Entity context

The extracted context around Crown ether shows recurring relationship patterns in the source. For example, Crown ether → Charles Pedersen, Chemistry, Citing, DuPont, He, His, In, Nobel Prize, Pedersen, The, This Another extracted example is Crown ether → Candida, Crown, Despite, Evaluation, In, Klebsiella, Pseudomonas, Staphilococcus. Use these groups to spot repeated connection types before inspecting the individual relationships.

Crown ether

Top relations

related to history · 11
Crown ether → Charles Pedersen, Chemistry, Citing, DuPont, He, His, In, Nobel Prize, Pedersen, The, This
has application · 8
Crown ether → Candida, Crown, Despite, Evaluation, In, Klebsiella, Pseudomonas, Staphilococcus
related to Affinity for cations · 4
Crown ether → Affinities, Between, Due, Hereby
see also · 1
Crown ether → Aza-crown

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

crown ethers cations potassium ether cation affinity oxygen 18-crown-6 atoms high groups phase binding cyclic also ring oligomers complexes pedersen

Crown ether relationships Subject–Predicate–Object triples

TTTA extracted 27 structured relationships around Crown ether. Examples in this analysis include valinomycin also display a marked preference for the potassium cation over other cations.Crown ethers have been shown to coordinate to Lewis acids through electrostatic → instance of → Ionophores and anthracenes → instance of → that are attached to polyaromatic species. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
valinomycin also display a marked preference for the potassium cation over other cations.Crown ethers have been shown to coordinate to Lewis acids through electrostaticinstance ofIonophores0.80text
σ-holeinstance ofIonophores0.80text
anthracenesinstance ofthat are attached to polyaromatic species0.80text
Crown etherhas applicationCrown0.60section
Crown etherhas applicationEvaluation0.60section
Crown etherhas applicationIn0.60section
Crown etherhas applicationKlebsiella0.60section
Crown etherhas applicationStaphilococcus0.60section
Crown etherhas applicationPseudomonas0.60section
Crown etherhas applicationCandida0.60section
Crown etherhas applicationDespite0.60section
Crown etherrelated to Affinity for cationsDue0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around Crown ether bring nearby vocabulary together. In this analysis, examples include Ethers, Ether and Cations. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Crown ether
    • Ethers
    • Ether
    • Cations
    • Properties
    • Binding
    • Pedersen
    • Affinity
    • Cation
    • Coordinate
    • Sodium
    • Alkali
    • Also
  • crown ether
    • Ethers
    • Ether
    • Cations
    • See
    • Charge
    • Pedersen
    • Affinity
    • Cation
    • Properties
    • Binding
    • Coordinate
    • Display
  • ether
    • Cations
    • See
    • Charge
    • Pedersen
    • Affinity
    • Cation
    • Coordinate
    • Display
    • Lithium
    • Refers
    • Ring
    • Sodium
  • crown
    • Ethers
    • Ether
    • Cations
    • Properties
    • Binding
    • Pedersen
    • Affinity
    • Cation
    • Ethylene
    • Oligomers
    • Oxide
    • Refers
  • thia crown ethers
    • Ethers
    • Ether
    • Cations
    • Properties
    • Ethylene
    • Oligomers
    • Oxide
    • Binding
    • Pedersen
    • Affinity
    • Phase
    • Cation
  • affinity for cations
    • High
    • 18-crown-6
    • Potassium
    • Also
    • Crown
    • Affinities
    • Ether
    • Affinity
    • Cations
    • Cation
    • Ethers
    • Ionophores
  • cation
    • Potassium
    • Affinity
    • Ether
    • Coordinate
    • Display
    • Ionophores
    • Lithium
    • Refers
    • Ring
    • Sodium
    • Alkali
    • Also
  • 18-crown-6
    • Protonated
    • High
    • Affinity
    • Bind
    • Complexes
    • Form
    • Phase
    • Potassium
    • Lithium
    • Sodium
    • Also
    • Atoms

Connections between topic areas Semantic bridges

For Crown ether, one of the stronger structural bridges in this analysis connects Crown ether with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Crown ether — Overview · splits 46 ⟂ 29
Crown ether — Affinity for cations · splits 55 ⟂ 20
Crown ether — History · splits 60 ⟂ 15
Crown ether — Pharmaceutical applications · splits 65 ⟂ 10

Map overview Semantic statistics

Crown ether

Nodes75
Edges74
Triples27
Avg. degree1.97
Density0.026667
Components1

Source & methodology

TTTA analyzes the structure around Crown ether to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as History, Applications & Measurement, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Crown ether · EN edition · Analysis: TopicsToTalkAbout

For writers, content strategists, SEOs, marketers and creators — from quick topic research to advanced semantic analysis.