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

Colors and Magnetism03:02

Colors and Magnetism

14.6K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.6K
Complexation Equilibria: The Chelate Effect01:19

Complexation Equilibria: The Chelate Effect

1.6K
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...
1.6K
EDTA: Chemistry and Properties01:22

EDTA: Chemistry and Properties

3.9K
Polydentate ligands are most widely used in complexometric titrations because they form more stable complexes with the metal ions than mono- or bidentate ligands due to the chelate effect. Examples of polydentate ligands are ethylenediaminetetraacetic acid (EDTA), crown ethers, and cryptands. The most important feature of optimal polydentate ligands is the ability to form 1:1 complexes in a single-step process. Amino carboxylic acid derivatives are frequently used as complexing agents. EDTA is...
3.9K

You might also read

Related Articles

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

Sort by
Same author

Medium matters: modeling the luminescence spectra and emission decay of LaPO<sub>4</sub>:Eu<sup>3+</sup> nanoparticles.

Nanoscale·2025
Same author

Dye-sensitized upconversion nanoparticles with enhanced aqueous luminescence for neuronal imaging.

Nanoscale·2025
Same author

One-Step Assembly of α-Aryl-Substituted DOTAs as Superior and Universal Platforms for Multifunctional Theranostics.

Angewandte Chemie (International ed. in English)·2025
Same author

Heteropolynuclear Lanthanide(III) Complexes for Cooperative Sensitization Upconversion in Water.

Journal of the American Chemical Society·2025
Same author

Facilitating PET Imaging: Eco-Friendly Purification Using Solid-Phase Material for Labeling Metal-Based Radiopharmaceuticals.

JACS Au·2025
Same author

Visualization of Hypoxic Tumors: Stimulated by NIR-IIb Emissive Erbium(III)-Phthalocyaninate Nanoagent.

Analytical chemistry·2025
Same journal

Therapeutic potential of crude protein extracts from two Egyptian freshwater snails Lanistes carinatus and Bellamya unicolor.

Scientific reports·2026
Same journal

Microbial contamination of donor corneas and post-keratoplasty endophthalmitis: a comparison between Japanese and U.S. eye banks using cold storage.

Scientific reports·2026
Same journal

Prevalence and contributing factors of virological non-suppression among adult patients on first-line antiretroviral therapy in tertiary hospitals in Ethiopia.

Scientific reports·2026
Same journal

An in vitro comparison of color stability between alkasite and different restorative materials in various staining solutions.

Scientific reports·2026
Same journal

Toward accessible mRNA LNP formulation: systematic evaluation of mixing strategies and key parameters.

Scientific reports·2026
Same journal

A network analysis of personality traits, mentalizing, and psychological health in Chinese college students.

Scientific reports·2026
See all related articles

Related Experiment Video

Updated: Apr 1, 2026

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

7.6K

Photo-reactive charge trapping memory based on lanthanide complex.

Jiaqing Zhuang1, Wai-Sum Lo2, Li Zhou1

  • 1Department of Physics and Materials Science, City University of Hong Kong, Kowloon Tong, Hong Kong SAR.

Scientific Reports
|October 10, 2015
PubMed
Summary
This summary is machine-generated.

This study introduces a novel organic field-effect transistor (OFET) memory utilizing photo-induced charges. A unique lanthanide complex enables light-assisted programming and erasing, enhancing memory performance.

More Related Videos

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

15.5K
Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells
08:31

Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells

Published on: September 16, 2014

12.6K

Related Experiment Videos

Last Updated: Apr 1, 2026

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies
09:38

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

7.6K
Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging
13:21

Preparation, Purification, and Characterization of Lanthanide Complexes for Use as Contrast Agents for Magnetic Resonance Imaging

Published on: July 21, 2011

15.5K
Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells
08:31

Luminescence Resonance Energy Transfer to Study Conformational Changes in Membrane Proteins Expressed in Mammalian Cells

Published on: September 16, 2014

12.6K

Area of Science:

  • Organic electronics
  • Materials science
  • Photonics

Background:

  • Photo-induced excitons are primarily used in photovoltaics and photodetectors.
  • Organic field-effect transistor (OFET) memory utilizing photo-induced charges remains underexplored.

Purpose of the Study:

  • To demonstrate a novel OFET memory device employing photo-induced charges.
  • To investigate the use of a luminescent organic lanthanide complex for charge trapping and light-assisted memory operations.

Main Methods:

  • Fabrication of an OFET memory device incorporating a novel organic lanthanide complex, Europium(III) thenoyltrifluoroacetonate complexed with 2-phenyl-4,6-bis(pyrazol-1-yl)-1,3,5-triazine (Eu(tta)3ppta).
  • Utilizing ultraviolet (UV) light excitation to generate photo-induced excitons and facilitate charge trapping/detrapping.
  • Employing light-assisted programming and erasing procedures with voltage bias to enhance the memory window.

Main Results:

  • The Eu(tta)3ppta complex successfully trapped and detrapped photo-induced charges, acting as a hole trapping element.
  • Significant enlargement of the memory window was achieved through UV light-assisted programming and erasing.
  • Stored charges were retained for over 10^4 seconds after voltage bias removal.

Conclusions:

  • The developed OFET memory demonstrates effective charge trapping and light-tunable characteristics.
  • The study highlights the potential of luminescent organic complexes in photo-reactive memory devices.
  • This work may inspire new research directions for light-controlled charge trapping memory technologies.