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

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview01:02

Ultraviolet and Visible (UV–Vis) Spectroscopy: Overview

4.3K
Ultraviolet–visible (UV–visible or UV–Vis) spectroscopy is an analytical technique that investigates the interaction between matter and UV–Vis light within the electromagnetic spectrum. This method is widely used for its versatility, simplicity, and relatively quick data acquisition, making it valuable for both qualitative and quantitative analysis. When UV–Vis radiation passes through a material,  molecules absorb light depending on the energy required for...
4.3K
UV–Vis Spectroscopy: Molecular Electronic Transitions01:16

UV–Vis Spectroscopy: Molecular Electronic Transitions

2.6K
In Ultraviolet–Visible (UV–Vis) spectroscopy, the absorption of electromagnetic radiation is used to probe the electronic structure of molecules. This technique provides insights into molecular electronic transitions, particularly the movement of electrons between different molecular orbitals. Radiation is absorbed if the energy of the electromagnetic radiation passing through the molecule is precisely equal to the energy difference between the excited and ground states. During this...
2.6K
UV–Vis Spectrometers01:14

UV–Vis Spectrometers

3.2K
The absorbance of UV and visible (UV–visible) radiations is measured using a UV–visible spectrophotometer. Deuterium lamps, which emit UV radiation, and tungsten lamps, which produce radiation in the visible region, are used as light sources in UV–visible spectrophotometers. A monochromator or prism is used for diffraction grating, i.e., to split the incoming radiation into different wavelengths. A system of slits is used to focus the desired wavelength on the sample cell.
3.2K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

30.1K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
30.1K
UV–Vis Spectroscopy of Conjugated Systems01:32

UV–Vis Spectroscopy of Conjugated Systems

8.1K
Organic compounds with conjugated double bonds show strong absorption features in the UV–visible region of the electromagnetic spectrum attributed to π → π* electronic excitations. Generally, a UV–vis absorption spectrum is recorded as a plot of absorbance vs wavelength. The wavelength of maximum absorbance, which manifests as a peak in the absorption spectrum, is denoted as λmax.
One of the factors influencing λmax is the extent of conjugation in...
8.1K
UV–Vis Spectroscopy: Woodward–Fieser Rules01:29

UV–Vis Spectroscopy: Woodward–Fieser Rules

27.9K
UV–Visible absorption spectra of conjugated dienes arise from the lowest energy π → π* transitions. The light-absorbing part of the molecule is called the chromophore, and the substituents directly attached to the chromophore are called auxochromes. A strong correlation exists between the absorption maxima, λmax, and the structure of a conjugated π system. The Woodward–Fieser rules predict the value of λmax for a given structure by adding the...
27.9K

You might also read

Related Articles

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

Sort by
Same author

Hybridizing π-conjugated organic systems with tetrahedral units: a design paradigm for advanced UV nonlinear optical materials.

Chemical science·2026
Same author

Determination of cross-sections for the <sup>130</sup>Xe(n,p)<sup>130</sup>I reaction in the neutron energy range of 13-15 MeV using isotope targets.

Applied radiation and isotopes : including data, instrumentation and methods for use in agriculture, industry and medicine·2026
Same author

Direct Observation of Noncollinear Ferrielectricity in a Two-Dimensional Hybrid Germanium Perovskite.

Journal of the American Chemical Society·2026
Same author

Unusual Anti-Thermoplastics and Low Thermal Expansion in 2D Metal Halide Crystals.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Ultranarrow-Spaced Polar Green Aromatic Dion-Jacobson Hybrid Perovskite Enables Highly Sensitive and Stable Self-Powered X-Ray Detection.

Advanced materials (Deerfield Beach, Fla.)·2026
Same author

Reconfigurable and nonvolatile photo-pyroelectricity in a ceramic-like biaxial molecular ferroelectric via polarization engineering.

Science advances·2026

Related Experiment Video

Updated: Dec 28, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

9.1K

Two Covalent Ultraviolet Nonlinear Optical Crystals.

Shuai Liu1,2, Gaomin Song3, Qingran Ding2

  • 1College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350000, P. R. China.

Chemistry, an Asian Journal
|February 15, 2020
PubMed
Summary

Two new covalent nonlinear optical (NLO) crystals, B2O3 I and II, exhibit excellent UV properties. These materials offer a promising new direction for ultraviolet NLO applications.

Keywords:
boratecovalent crystalsfirst-principles calculationsnonlinear opticalsecond harmonic generation

More Related Videos

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

19.4K
Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
07:42

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

3.5K

Related Experiment Videos

Last Updated: Dec 28, 2025

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

9.1K
Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
11:08

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

19.4K
Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator
07:42

Rapid Repetition Rate Fluctuation Measurement of Soliton Crystals in a Microresonator

Published on: December 15, 2021

3.5K

Area of Science:

  • Materials Science
  • Solid State Physics
  • Optics

Background:

  • Nonlinear optical (NLO) crystals are crucial for laser wavelength conversion.
  • Existing ultraviolet (UV) NLO crystals primarily contain cations, with covalent options being rare.
  • Covalent crystals offer potential for novel NLO properties.

Purpose of the Study:

  • To report the discovery and characterization of two novel covalent NLO crystals, B2O3 I and B2O3 II.
  • To evaluate their suitability for UV NLO applications.
  • To investigate the origin of their NLO properties.

Main Methods:

  • First-principles calculations were employed to determine key material properties.
  • Analysis included absorption edges, NLO coefficients, and birefringence.
  • Comparison with existing UV NLO crystals like alpha-SiO2 and LiBO3 was performed.

Main Results:

  • B2O3 I and II possess extremely short UV absorption edges (134 nm and 141 nm).
  • They exhibit large NLO coefficients (d22 = 1.38 pm/V, d24 = 0.702 pm/V) and sufficient birefringence (0.037, 0.031).
  • Their NLO performance is superior to alpha-SiO2 and comparable to commercial LiBO3.

Conclusions:

  • B2O3 I and B2O3 II are excellent candidates for UV NLO applications.
  • Their covalent nature and superior optical properties present a new avenue for NLO crystal research.
  • These findings open new possibilities for developing advanced laser technologies.