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

Ionic Crystal Structures02:42

Ionic Crystal Structures

16.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
16.7K
VSEPR Theory and the Basic Shapes02:52

VSEPR Theory and the Basic Shapes

82.1K
Overview of VSEPR Theory
82.1K
VSEPR Theory and the Effect of Lone Pairs04:01

VSEPR Theory and the Effect of Lone Pairs

51.8K
Effect of Lone Pairs of Electrons on Molecule Geometry
51.8K
Crystal Field Theory - Tetrahedral and Square Planar Complexes02:46

Crystal Field Theory - Tetrahedral and Square Planar Complexes

47.8K
Tetrahedral Complexes
Crystal field theory (CFT) is applicable to molecules in geometries other than octahedral. In octahedral complexes, the lobes of the dx2−y2 and dz2 orbitals point directly at the ligands. For tetrahedral complexes, the d orbitals remain in place, but with only four ligands located between the axes. None of the orbitals points directly at the tetrahedral ligands. However, the dx2−y2 and dz2 orbitals (along the Cartesian axes) overlap with the ligands less than the dxy,...
47.8K
Molecular Shapes01:18

Molecular Shapes

61.0K
Molecules have characteristic shapes that are crucial for their function. The arrangement of various electron groups around the central atom dictates their molecular geometry. Electron pairs in the valence shell of a central atom will adopt an arrangement that minimizes repulsions between the electron pairs by maximizing the distance between them. The valence electrons form either bonding pairs, located primarily between bonded atoms, or lone pairs.
Two regions of electron density in a diatomic...
61.0K
Coordination Number and Geometry02:57

Coordination Number and Geometry

18.7K
For transition metal complexes, the coordination number determines the geometry around the central metal ion. Table 1 compares coordination numbers to molecular geometry. The most common structures of the complexes in coordination compounds are octahedral, tetrahedral, and square planar.
18.7K

You might also read

Related Articles

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

Sort by
Same author

Ultrasensitive Protein Detection Using Luminescent Eu-Ion-Doped Vanadate Nanoparticles.

ACS sensors·2026
Same author

Repurposing chlorpromazine for anti-leukaemic therapy with the drug-in-cyclodextrin-in-liposome nanocarrier platform.

Carbohydrate polymers·2025
Same author

Continuous Anisotropic Growth of Plasmonic Cs<sub></sub>WO<sub>3-δ</sub> Nanocrystals into Rods and Platelets.

ACS nano·2025
Same author

Correction to: SERS characterization of aggregated and isolated bacteria deposited on silver-based substrates.

Analytical and bioanalytical chemistry·2025
Same author

Shearmetry of Fluids with Tunable Rheology by Polarized Luminescence of Rare Earth-Doped Nanorods.

ACS nano·2024
Same author

Near-Infrared Dual-Band LSPR Coupling in Oriented Assembly of Doped Metal Oxide Nanocrystal Platelets.

Nano letters·2024

Related Experiment Video

Updated: Jan 4, 2026

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
08:18

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Published on: March 4, 2021

2.1K

NaYF4 Microstructure, beyond Their Well-Shaped Morphology.

Godefroy Leménager1, Sandrine Tusseau-Nenez2, Maud Thiriet3

  • 1Laboratoire de Physique de la Matière Condensée, École Polytechnique, CNRS, Université Paris Saclay, 91128 Palaiseau, France. godefroy.lemenager@polytechnique.edu.

Nanomaterials (Basel, Switzerland)
|November 7, 2019
PubMed
Summary

Lanthanide-doped nanoparticles like beta-NaYF4 nanorods show variable microstructure. Controlling crystallinity is key for optimizing their optical properties for various applications.

Keywords:
X-ray diffractioncrystalline structurepolarized luminescence

More Related Videos

Atmospheric Pressure Fabrication of Large-Sized Single-Layer Rectangular SnSe Flakes
11:21

Atmospheric Pressure Fabrication of Large-Sized Single-Layer Rectangular SnSe Flakes

Published on: March 21, 2018

8.5K
Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

49.0K

Related Experiment Videos

Last Updated: Jan 4, 2026

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
08:18

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Published on: March 4, 2021

2.1K
Atmospheric Pressure Fabrication of Large-Sized Single-Layer Rectangular SnSe Flakes
11:21

Atmospheric Pressure Fabrication of Large-Sized Single-Layer Rectangular SnSe Flakes

Published on: March 21, 2018

8.5K
Synthesis and Characterization of Functionalized Metal-organic Frameworks
11:27

Synthesis and Characterization of Functionalized Metal-organic Frameworks

Published on: September 5, 2014

49.0K

Area of Science:

  • Materials Science
  • Nanotechnology
  • Solid State Chemistry

Background:

  • Lanthanide-doped nanoparticles are explored for optical applications.
  • Luminescence sensitivity to local symmetry is a challenge for poorly crystalline materials.

Purpose of the Study:

  • To detail the chemical composition and microstructure of beta-NaYF4 nanorods.
  • To investigate the impact of synthesis variations on nanorod properties.

Main Methods:

  • X-ray Diffraction (XRD) analysis
  • Transmission Electron Microscopy (TEM) observations
  • Scanning Electron Microscopy (SEM) imaging
  • Polarized emission analysis

Main Results:

  • Significant variations in microstructure observed within synthesis batches and with minor condition changes.
  • Nanorods exhibit faceted shapes but deviate from monocrystallinity, showing local symmetry and orientation variations.
  • Polarized emission analysis confirms structural sensitivities.

Conclusions:

  • Crystallinity and local structural deviations in beta-NaYF4 nanorods significantly impact optical properties.
  • Detailed structural characterization is crucial for optimizing lanthanide-doped nanoparticles for targeted applications.