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

π Electron Effects on Chemical Shift: Overview01:27

π Electron Effects on Chemical Shift: Overview

1.3K
An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...
1.3K
Spin–Spin Coupling: One-Bond Coupling01:17

Spin–Spin Coupling: One-Bond Coupling

1.2K
Coupling interactions are strongest between NMR-active nuclei bonded to each other, where spin information can be transmitted directly through the pair of bonding electrons. While nuclei polarize their electrons to the opposite spins, the bonding electron pair has opposite spins. Configurations with antiparallel nuclear spins are expected to be lower in energy. When coupling makes antiparallel states more favorable, J is considered to have a positive value. The one-bond coupling constant, 1J,...
1.2K
¹H NMR: Long-Range Coupling01:27

¹H NMR: Long-Range Coupling

2.1K
The coupling interactions of nuclei across four or more bonds are usually weak, with J values less than 1 Hz. While these are usually not observed in spectra, the presence of multiple bonds along the coupling pathway can result in observable long-range coupling.
In alkenes, spin information is communicated via σ–π overlap, as seen in allylic (four-bond) and homoallylic (five-bond) couplings. These coupling interactions are stronger when the σ bond is parallel to the alkene...
2.1K
Valence Bond Theory02:42

Valence Bond Theory

9.9K
Coordination compounds and complexes exhibit different colors, geometries, and magnetic behavior, depending on the metal atom/ion and ligands from which they are composed. In an attempt to explain the bonding and structure of coordination complexes, Linus Pauling proposed the valence bond theory, or VBT, using the concepts of hybridization and the overlapping of the atomic orbitals. According to VBT, the central metal atom or ion (Lewis acid) hybridizes to provide empty orbitals of suitable...
9.9K
The de Broglie Wavelength02:32

The de Broglie Wavelength

31.1K
In the macroscopic world, objects that are large enough to be seen by the naked eye follow the rules of classical physics. A billiard ball moving on a table will behave like a particle; it will continue traveling in a straight line unless it collides with another ball, or it is acted on by some other force, such as friction. The ball has a well-defined position and velocity or well-defined momentum, p = mv, which is defined by mass m and velocity v at any given moment. This is the typical...
31.1K

You might also read

Related Articles

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

Sort by
Same author

Switching of supramolecular nanostructures at the solid-liquid interface: interplay of bias polarity and solution concentration.

Nanoscale advances·2025
Same author

An organic array of quantum corrals modulated by the gold herringbone electronic superlattice.

Nanoscale·2025
Same author

Comparing Adsorption of an Electron-Rich Triphenylene Derivative: Metallic vs Graphitic Surfaces.

The journal of physical chemistry. C, Nanomaterials and interfaces·2024
Same author

Kinetic control over the chiral-selectivity in the formation of organometallic polymers on a Ag(110) surface.

Communications chemistry·2024
Same author

Length-dependent symmetry in narrow chevron-like graphene nanoribbons.

Nanoscale advances·2022
Same author

Induced Fit and Mobility of Cycloalkanes within Nanometer-Sized Confinements at 5 K.

The journal of physical chemistry letters·2022

Related Experiment Video

Updated: Nov 2, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

15.7K

Atomically precise graphene nanoribbons: interplay of structural and electronic properties.

R S Koen Houtsma1, Joris de la Rie, Meike Stöhr

  • 1Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747AG, Groningen, The Netherlands. r.s.k.houtsma@rug.nl m.a.stohr@rug.nl.

Chemical Society Reviews
|June 8, 2021
PubMed
Summary

Atomically precise graphene nanoribbons are synthesized on surfaces, enabling tunable electronic properties for nanoelectronic devices. Controlling precursor design allows fine-tuning ribbon structure and band gaps for transistor applications.

More Related Videos

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.8K
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.8K

Related Experiment Videos

Last Updated: Nov 2, 2025

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities
11:42

Fabrication of Gate-tunable Graphene Devices for Scanning Tunneling Microscopy Studies with Coulomb Impurities

Published on: July 24, 2015

15.7K
Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

7.8K
Fabricating van der Waals Heterostructures with Precise Rotational Alignment
09:25

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

9.8K

Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Nanotechnology

Background:

  • Graphene lacks a band gap, limiting its use in transistors.
  • Graphene nanoribbons (GNRs) offer a solution by introducing a band gap.
  • On-surface synthesis enables atomic precision in GNR fabrication.

Purpose of the Study:

  • To review the on-surface synthesis of GNRs.
  • To explore the structure-property relationships of GNRs.
  • To summarize precursor design strategies for tunable GNRs.

Main Methods:

  • Two-step on-surface synthesis.
  • Atomic precision fabrication techniques.
  • Characterization of structural and electronic properties.

Main Results:

  • Precise control over GNR width and edge structure achieved.
  • Electronic properties are directly linked to GNR structure.
  • Tunable band gaps achieved through precursor design.

Conclusions:

  • On-surface synthesis allows for the creation of GNRs with tailored electronic properties.
  • Precursor design is critical for controlling GNR structure and functionality.
  • GNRs show promise for future nanoelectronic devices and transistor applications.