Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Pore Transport and Ion-Pair Transport01:17

Pore Transport and Ion-Pair Transport

1.3K
Pore transport and ion-pair formation are critical mechanisms for the absorption and distribution of drugs in the body.
Pore transport, also known as convective transport, is a process where small molecules like urea, water, and sugars rapidly cross cell membranes as though there were channels or pores in the membrane. Although direct microscopic evidence is limited  but the concept of pores or channels is widely accepted based on physiological evidence. Despite the lack of direct...
1.3K
Formation of Complex Ions03:45

Formation of Complex Ions

26.3K
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...
26.3K
DNA Base Pairing02:27

DNA Base Pairing

33.8K
Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
33.8K
Common Ion Effect03:24

Common Ion Effect

47.1K
Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
47.1K
Relative Strengths of Conjugate Acid-Base Pairs02:29

Relative Strengths of Conjugate Acid-Base Pairs

52.8K
Brønsted-Lowry acid-base chemistry is the transfer of protons; thus, logic suggests a relation between the relative strengths of conjugate acid-base pairs. The strength of an acid or base is quantified in its ionization constant, Ka or Kb, which represents the extent of the acid or base ionization reaction. For the conjugate acid-base pair HA / A−, the ionization equilibrium equations and ionization constant expressions are
52.8K
Precipitation of Ions03:11

Precipitation of Ions

30.4K
Predicting Precipitation
The equation that describes the equilibrium between solid calcium carbonate and its solvated ions is:
30.4K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Non-canonical histone H3.3 and its chaperones HIRA and DAXX participate in the regulation of KSHV latency.

bioRxiv : the preprint server for biology·2026
Same author

Squaratides: a tunable platform for anion binding in peptide-inspired macrocycles.

Chemical communications (Cambridge, England)·2026
Same author

Water-soluble squaramide functionalised peptides for sulfate recognition in aqueous media.

Organic & biomolecular chemistry·2026
Same author

Pyridine and N-Pyridinium Functionalized Macrocyclic Squaramide Anion Receptors with High Affinity for Aqueous Sulfate.

Chemistry, an Asian journal·2026
Same author

A Vibration-Induced Emission-Based Ratiometric Sensor for Detection of Anions in Aqueous Solution.

Chemistry (Weinheim an der Bergstrasse, Germany)·2025
Same author

Near-Quantitative Removal of Oxalate and Terephthalate from Water by Precipitation with a Rigid Bis-Amidinium Compound.

Chemistry (Weinheim an der Bergstrasse, Germany)·2024
Same journal

A Domino-Synthesized Dicoordinate Copper(I) Bis-imidazopyridine Complex Triggering Cuproptosis/Ferroptosis for Enhanced Cancer Immunotherapy.

Angewandte Chemie (International ed. in English)·2026
Same journal

Mirror-Symmetric Organic Two-Dimensional Crystals for Alternative Photon Transport Pathways.

Angewandte Chemie (International ed. in English)·2026
Same journal

Cobalt-Catalyzed Migratory E-Selective Asymmetric Aza-Nozaki-Hiyama-Kishi Coupling.

Angewandte Chemie (International ed. in English)·2026
Same journal

Facile Synthesis of α,ω-Dihydroxy Telechelic Macromonomers From Ethylene and α-Olefins for Recyclable Alternating Block Copolymers.

Angewandte Chemie (International ed. in English)·2026
Same journal

Multi-Atom Sub-Nanometer Assemblies on Interpenetrating Multi-Chambered N/C Nanospheres.

Angewandte Chemie (International ed. in English)·2026
Same journal

A Synergistic C<sub>2+</sub> Alcohols/Olefins-Intermediated Pathway Boosts CO<sub>2</sub> Hydrogenation to Aromatics.

Angewandte Chemie (International ed. in English)·2026
See all related articles

Related Experiment Video

Updated: Feb 15, 2026

Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems
08:17

Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems

Published on: July 4, 2011

15.7K

A Fluorescent Ditopic Rotaxane Ion-Pair Host.

Mathieu Denis1, Lei Qin2, Peter Turner2

  • 1Chemistry, University of Southampton, Highfield, Southampton, SO17 1BJ, UK.

Angewandte Chemie (International Ed. in English)
|February 3, 2018
PubMed
Summary
This summary is machine-generated.

We developed a novel rotaxane sensor that selectively detects chloride ions (Cl-) using a simple urea structure. This sensor signals chloride binding with a fluorescence switch-on, offering a new tool for anion detection.

Keywords:
anionsfluorescencemechanical bondsrotaxanessensors

More Related Videos

Automated, High-Throughput Detection of Bacterial Adherence to Host Cells
07:21

Automated, High-Throughput Detection of Bacterial Adherence to Host Cells

Published on: September 17, 2021

4.1K
Monitoring Changes in Membrane Polarity, Membrane Integrity, and Intracellular Ion Concentrations in Streptococcus pneumoniae Using Fluorescent Dyes
11:17

Monitoring Changes in Membrane Polarity, Membrane Integrity, and Intracellular Ion Concentrations in Streptococcus pneumoniae Using Fluorescent Dyes

Published on: February 17, 2014

14.3K

Related Experiment Videos

Last Updated: Feb 15, 2026

Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems
08:17

Fluorescent Nanoparticles for the Measurement of Ion Concentration in Biological Systems

Published on: July 4, 2011

15.7K
Automated, High-Throughput Detection of Bacterial Adherence to Host Cells
07:21

Automated, High-Throughput Detection of Bacterial Adherence to Host Cells

Published on: September 17, 2021

4.1K
Monitoring Changes in Membrane Polarity, Membrane Integrity, and Intracellular Ion Concentrations in Streptococcus pneumoniae Using Fluorescent Dyes
11:17

Monitoring Changes in Membrane Polarity, Membrane Integrity, and Intracellular Ion Concentrations in Streptococcus pneumoniae Using Fluorescent Dyes

Published on: February 17, 2014

14.3K

Area of Science:

  • Supramolecular Chemistry
  • Chemical Sensing
  • Anion Recognition

Background:

  • Developing selective anion sensors is crucial for various chemical and biological applications.
  • Rotaxanes offer unique structural properties for molecular recognition and sensing.

Purpose of the Study:

  • To design and synthesize a rotaxane-based sensor for selective chloride ion (Cl-) detection.
  • To investigate the sensing mechanism and selectivity of the rotaxane host.

Main Methods:

  • Synthesis of a urea-containing rotaxane.
  • Spectroscopic studies (fluorescence) to monitor anion binding.
  • Selectivity studies with various competing anions.

Main Results:

  • The rotaxane selectively binds Cl- as a separated ion pair with H+.
  • Anion binding is reported via a fluorescence switch-on response.
  • The host exhibits selectivity for Cl- over more basic and less basic anions, and size selectivity due to the mechanical bond.

Conclusions:

  • A rotaxane based on a urea motif functions as an effective and selective Cl- sensor.
  • The mechanical bond in the rotaxane contributes to its size selectivity.
  • This system provides a novel fluorescence-based approach for anion detection.