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

Binary Fission01:20

Binary Fission

Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
Binary Fission01:26

Binary Fission

Binary fission is the primary mode of asexual reproduction in prokaryotes, such as bacteria. It results in the production of two genetically identical daughter cells. This highly efficient process ensures the rapid propagation of bacterial populations under favorable conditions and involves coordinated cellular and molecular events.DNA Replication and SeparationThe process begins with the replication of the bacterial chromosome. The circular DNA molecule unwinds at a specific origin of...
Nuclear Fission02:50

Nuclear Fission

Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large number of different...
Spin–Spin Coupling: Two-Bond Coupling (Geminal Coupling)01:20

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

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...
Single-Strand DNA Binding Proteins01:03

Single-Strand DNA Binding Proteins

For successful DNA replication, the unwinding of double-stranded DNA must be accompanied by stabilization and protection of the separated single strands of the DNA. This crucial task is performed by single-strand DNA-binding (SSB) proteins. They bind to the DNA in a sequence-independent manner, which means that the nitrogenous bases of the DNA need not be present in a specific order for binding of SSB proteins to it. The binding of SSB proteins straightens single-stranded DNA (ssDNA) and makes...
¹H NMR: Complex Splitting01:13

¹H NMR: Complex Splitting

A proton M that is coupled to a proton X results in doublet signals for M. However, NMR-active nuclei can be simultaneously coupled to more than one nonequivalent nucleus. When M is coupled to a second proton A, such as in styrene oxide, each peak in the doublet is split into another doublet.
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied first.

You might also read

Related Articles

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

Sort by
Same author

Nano-Confined Radical Anion as An NIR-II Photothermal Immunogenic Amplifier for In Situ Cancer Vaccination.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2026
Same author

VG161 oncolytic virus remodels the tumor microenvironment by expanding CD3<sup>+</sup> macrophages and enhancing antitumor immunity.

Cancer letters·2026
Same author

Bottom-up synthesis of molecular nanodiamond from nanographene.

Nature·2026
Same author

PTEN deficiency impairs MHC-I-mediated tumour immunity via NRF2-dependent autophagy in microsatellite stable colorectal cancer.

Gut·2026
Same author

Neoadjuvant mFOLFOXIRI with or without cadonilimab versus mFOLFOX6 in locally advanced colorectal cancer: A randomized phase 2 trial (OPTICAL-2).

Med (New York, N.Y.)·2026
Same author

Distinct molecular and tumor microenvironment characteristics of mucinous adenocarcinoma in colorectal cancer.

iScience·2026
Same journal

Efficient Chirality-Induced Spin Selectivity in Self-Assembled Monolayers of Ru<sub>2</sub><sup>5</sup><sup>+</sup> Paddlewheel Complexes.

Journal of the American Chemical Society·2026
Same journal

Direct Evidence for the Sulfonium-Mediated Photopolymerization of 1,2-Dithiolanes.

Journal of the American Chemical Society·2026
Same journal

Ionic Cluster Catalyst Assembly Strategy for Ethylene Polymerization and Copolymerization.

Journal of the American Chemical Society·2026
Same journal

Gate-Tailoring with Protons and Metal Cations in a Flexible Zeolite for High-Efficiency Ethylene/Ethane Separation.

Journal of the American Chemical Society·2026
Same journal

Pyridyl Radical-Induced Catalytic Reconstruction of Cyclic Sulfides.

Journal of the American Chemical Society·2026
Same journal

Probing Interfaces in Membrane Electrode Assemblies via <i>Operando</i> Infrared Spectroscopy at Model Gas-Liquid-Solid Triple-Phase Boundaries.

Journal of the American Chemical Society·2026
See all related articles

Related Experiment Video

Updated: Jun 17, 2026

Single-Molecule F&ouml;rster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1
11:27

Single-Molecule Förster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1

Published on: September 18, 2019

Singlet Fission among Two Single Molecules.

Sumanta Paul1, Oleksandr Yampolskyy1, Zehua Wu1

  • 1Department of Chemistry, Johannes Gutenberg-Universität, Mainz 55128, Germany.

Journal of the American Chemical Society
|June 15, 2026
PubMed
Summary
This summary is machine-generated.

Single molecule spectroscopy reveals complex dynamics in singlet fission (SF). This study quanties the rates of triplet state formation and decay in terrylenediimide dimers, offering new insights into this solar energy conversion process.

More Related Videos

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination
11:24

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination

Published on: May 13, 2017

Making Precise and Accurate Single-Molecule FRET Measurements using the Open-Source smfBox
07:12

Making Precise and Accurate Single-Molecule FRET Measurements using the Open-Source smfBox

Published on: July 5, 2021

Related Experiment Videos

Last Updated: Jun 17, 2026

Single-Molecule F&ouml;rster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1
11:27

Single-Molecule Förster Resonance Energy Transfer Methods for Real-Time Investigation of the Holliday Junction Resolution by GEN1

Published on: September 18, 2019

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination
11:24

High Precision FRET at Single-molecule Level for Biomolecule Structure Determination

Published on: May 13, 2017

Making Precise and Accurate Single-Molecule FRET Measurements using the Open-Source smfBox
07:12

Making Precise and Accurate Single-Molecule FRET Measurements using the Open-Source smfBox

Published on: July 5, 2021

Area of Science:

  • Photophysical processes
  • Materials science
  • Spectroscopy

Background:

  • Singlet fission (SF) generates two triplet excited states from one singlet excitation, enhancing exciton multiplication for solar energy applications.
  • SF typically outcompetes radiative decay, making single-molecule studies challenging.

Purpose of the Study:

  • To investigate the mechanistic details of singlet fission at the single-molecule level.
  • To analyze the dynamics and heterogeneities of SF in terrylenediimide (TDI) dimers.

Main Methods:

  • Single-molecule spectroscopy was employed to study TDI dimers at room and cryogenic temperatures.
  • Photon emission streams from individual dimers were analyzed to determine SF rates.

Main Results:

  • Static and dynamic heterogeneities in SF rates were observed, indicated by broad rate distributions and fluctuations.
  • Delayed fluorescence and occasional rate fluctuations during spin evolution were detected.
  • Cryogenic experiments suggested the formation of a coherent multiexciton superposition state.

Conclusions:

  • Single-molecule spectroscopy provides a new approach to study SF mechanisms obscured by ensemble averaging.
  • The findings offer detailed insights into the complex kinetics and quantum phenomena governing singlet fission.