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

Atomic Nuclei: Nuclear Spin State Overview01:03

Atomic Nuclei: Nuclear Spin State Overview

1.5K
NMR-active nuclei have energy levels called 'spin states' that are associated with the orientations of their nuclear magnetic moments. In the absence of a magnetic field, the nuclear magnetic moments are randomly oriented, and the spin states are degenerate. When an external magnetic field is applied, the spin states have only 2 + 1 orientations available to them. A proton with = ½ has two available orientations. Similarly, for a quadrupolar nucleus with a nuclear spin value of one, the...
1.5K
NMR Spectroscopy: Spin–Spin Coupling01:08

NMR Spectroscopy: Spin–Spin Coupling

2.7K
The spin state of an NMR-active nucleus can have a slight effect on its immediate electronic environment. This effect propagates through the intervening bonds and affects the electronic environments of NMR-active nuclei up to three bonds away; occasionally, even farther. This phenomenon is called spin–spin coupling or J-coupling. Coupling interactions are mutual and result in small changes in the absorption frequencies of both nuclei involved. While nuclei of the same element are involved...
2.7K
¹H NMR: Interpreting Distorted and Overlapping Signals01:02

¹H NMR: Interpreting Distorted and Overlapping Signals

1.3K
Spin systems where the difference in chemical shifts of the coupled nuclei is greater than ten times J are called first-order spin systems. These nuclei are weakly coupled, and their chemical shifts and coupling constant can generally be estimated from the well-separated signals in the spectrum.
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
1.3K
Quantum Numbers02:43

Quantum Numbers

47.6K
It is said that the energy of an electron in an atom is quantized; that is, it can be equal only to certain specific values and can jump from one energy level to another but not transition smoothly or stay between these levels.
47.6K
Spin–Spin Coupling Constant: Overview01:08

Spin–Spin Coupling Constant: Overview

1.2K
In bromoethane, the three methyl protons are coupled to the two methylene protons that are three bonds away. In accordance with the n+1 rule, the signal from the methyl protons is split into three peaks with 1:2:1 relative intensities. The methylene protons appear as a quartet, with the relative intensities of 1:3:3:1.
Qualitatively, any spin plus-half nucleus polarizes the spins of its electrons to the minus-half state. Consequently, the paired electron in the hydrogen–carbon bond must...
1.2K
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)

1.4K
Two NMR-active nuclei bonded to a central atom can be involved in geminal or two-bond coupling. Geminal coupling is commonly seen between diastereotopic protons in chiral molecules and unsymmetrical alkenes, among others.
The central atom need not be NMR-active because its electrons are affected by the electron polarization of the spin-active atoms. However, spin information is transmitted less effectively than in one-bond coupling, and 2J values are usually weaker than 1J values. The energy of...
1.4K

You might also read

Related Articles

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

Sort by
Same author

Optically addressable molecular spin qubits.

MRS bulletin·2026
Same author

Crystal Symmetry-Driven Spin-Optical Dynamics in Cr<sup>3+</sup> Molecular Spins.

Inorganic chemistry·2026
Same author

Challenges and opportunities for quantum information hardware.

Science (New York, N.Y.)·2025
Same author

Predicted Ferromagnetism in Discovered Co-Bi Binary Phases.

Journal of the American Chemical Society·2025
Same author

A high-resolution molecular spin-photon interface at telecommunication wavelengths.

Science (New York, N.Y.)·2025
Same author

A General and Modular Approach to Solid-State Integration of Zero-Dimensional Quantum Systems.

Nano letters·2025
Same journal

A native sulfur deposit in Gale crater, Mars.

Science (New York, N.Y.)·2026
Same journal

Coordinated demise of harmful algal blooms.

Science (New York, N.Y.)·2026
Same journal

Genetic effects put into context.

Science (New York, N.Y.)·2026
Same journal

Bacteria share proteins to survive antibiotics.

Science (New York, N.Y.)·2026
Same journal

Impacts shaped Earth's first continents.

Science (New York, N.Y.)·2026
Same journal

Erratum for the Report "Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity" by C. Jia <i>et al</i>.

Science (New York, N.Y.)·2026
See all related articles

Related Experiment Video

Updated: Nov 30, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.5K

Optically addressable molecular spins for quantum information processing.

S L Bayliss1, D W Laorenza2, P J Mintun1

  • 1Pritzker School of Molecular Engineering, University of Chicago, Chicago, IL 60637, USA.

Science (New York, N.Y.)
|November 13, 2020
PubMed
Summary
This summary is machine-generated.

Researchers developed optically addressable chromium(IV) molecules for quantum technologies. These spin-bearing molecules can be controlled with light and microwaves, paving the way for designer quantum systems.

More Related Videos

Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

10.0K
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

15.2K

Related Experiment Videos

Last Updated: Nov 30, 2025

Generation and Coherent Control of Pulsed Quantum Frequency Combs
06:42

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

9.5K
Direct Imaging of Laser-driven Ultrafast Molecular Rotation
10:52

Direct Imaging of Laser-driven Ultrafast Molecular Rotation

Published on: February 4, 2017

10.0K
Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
14:58

Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping

Published on: June 3, 2015

15.2K

Area of Science:

  • Quantum technology
  • Molecular engineering
  • Materials science

Background:

  • Spin-bearing molecules are key for quantum technologies due to their tunability and scalability.
  • Optically addressing ground-state spins is crucial for quantum information science but has been challenging for molecules.

Purpose of the Study:

  • To demonstrate optical addressability of ground-state spins in molecular systems.
  • To synthesize and characterize organometallic chromium(IV) molecules for quantum applications.

Main Methods:

  • Synthesis of novel organometallic chromium(IV) compounds.
  • Optical initialization and readout of molecular ground-state spins.
  • Microwave-based coherent manipulation of spin states.
  • Atomistic modification of molecular structure to tune properties.

Main Results:

  • Demonstrated optical addressability of ground-state spins in synthesized chromium(IV) molecules.
  • Showcased light-based spin initialization and readout.
  • Achieved coherent spin manipulation using microwaves.
  • Varied spin and optical properties through structural modifications.

Conclusions:

  • Optically addressable molecular spins are achievable, opening new avenues for quantum information science.
  • Chromium(IV) molecules offer a promising platform for bottom-up design of quantum systems.
  • Tunable spin and optical properties suggest potential for bespoke quantum devices.