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

Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

Fluorometers and spectrofluorometers are two types of instruments used for measuring molecular fluorescence. These instruments differ in how they select excitation and emission wavelengths and the type of light sources they utilize. Fluorometers use absorption interference filters to choose excitation and emission wavelengths. The excitation source in a fluorometer is typically a low-pressure mercury vapor lamp that emits intense lines distributed throughout the ultraviolet and visible regions.
Variables Affecting Phosphorescence and Fluorescence01:26

Variables Affecting Phosphorescence and Fluorescence

Fluorescence and phosphorescence are essential phenomena in fields like analytical chemistry, biological imaging, and materials science, where they detect molecular properties and visualize cellular structures. Understanding the variables that influence these luminescent behaviors is crucial for maximizing accuracy and efficiency in their applications. These variables can broadly be grouped into chemical structure, solvent properties, and external conditions, each playing a distinct role in...
Protein Dynamics in Living Cells01:19

Protein Dynamics in Living Cells

Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Molecular Spectroscopy: Absorption and Emission01:14

Molecular Spectroscopy: Absorption and Emission

Molecules possess discrete energy levels called quantum states. Unlike atoms, which have simpler energy levels, molecules possess additional rotational and vibrational energy levels. Each energy level is separated by an energy gap, with the gaps between adjacent electronic, vibrational, and rotational levels varying significantly. The three types of energy levels in a diatomic molecule are shown in Figure 1.
Photoluminescence: Fluorescence and Phosphorescence01:23

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...
Photoluminescence: Applications01:14

Photoluminescence: Applications

Photoluminescence offers a wide range of applications due to its inherent sensitivity and selectivity. This technique allows for both direct and indirect analyses of the analyte. Direct quantitative analysis is possible when the analyte exhibits a favorable quantum yield for fluorescence or phosphorescence. However, an indirect analysis may be feasible if the analyte is not fluorescent or phosphorescent, or if the quantum yield is unfavorable. Indirect methods include reacting the analyte with...

You might also read

Related Articles

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

Sort by
Same author

Nanowire-based AFM-IR microscopy: Unveiling chemical structure at sub-10-nm resolution with silver nanowire-functionalized AFM probes.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Localized heat induces ERK activation and signal propagation in solid tumors.

Scientific reports·2026
Same author

Correction to "Biocompatible Label-Free Detection of Carbon Black Particles by Femtosecond Pulsed Laser Spectroscopy".

Nano letters·2026
Same author

Mapping Optical Chirality with Single Fluorescent Molecules.

Nano letters·2026
Same author

Raman Spectroscopy and FRAP Analysis on Density Heterogeneity and Diffusion Behavior of Complex Coacervation by Arginine-Rich Dipeptides and Poly‑A RNA.

ACS omega·2025
Same author

Nanoscale chemical characterization of functionalized graphene by heterodyne AFM-IR and chemical force microscopy.

Nanoscale·2025

Related Experiment Video

Updated: Jun 26, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

Polymers and single molecule fluorescence spectroscopy, what can we learn?

Dominik Wöll1, Els Braeken, Ania Deres

  • 1Department of Chemistry, Katholieke Universiteit Leuven, Celestijnenlaan 200 F, 3001 Heverlee, Belgium.

Chemical Society Reviews
|January 27, 2009
PubMed
Summary

Single molecule fluorescence spectroscopy (SMFS) offers detailed insights into polymer science at room temperature. This review highlights SMFS applications for understanding polymer structure, dynamics, and photophysics.

More Related Videos

Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules
10:23

Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules

Published on: April 25, 2025

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

Related Experiment Videos

Last Updated: Jun 26, 2026

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level
06:55

Synthesis of Cyclic Polymers and Characterization of Their Diffusive Motion in the Melt State at the Single Molecule Level

Published on: September 26, 2016

Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules
10:23

Time-Resolved Fluorescence Anisotropy from Single Molecules for Characterizing Local Flexibility in Biomolecules

Published on: April 25, 2025

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

Area of Science:

  • Polymer Science
  • Spectroscopy

Background:

  • Single molecule fluorescence spectroscopy (SMFS) is a powerful technique for investigating materials at the molecular level.
  • Understanding polymer behavior requires detailed knowledge of structure, dynamics, and photophysics.

Purpose of the Study:

  • To review key advancements in polymer science using SMFS at ambient temperatures.
  • To discuss the suitability of various single molecule methods for extracting comprehensive polymer information.

Main Methods:

  • Utilizing single molecule fluorescence spectroscopy (SMFS).
  • Employing polymer films for molecular immobilization.
  • Observing dynamics near the glass transition temperature (Tg).

Main Results:

  • Demonstrated SMFS for analyzing polymer structure and dynamics.
  • Visualized polymer chain conformation and reptation.
  • Reported in situ polymerization reactions using SMFS.
  • Detailed photophysics of embedded dye molecules.

Conclusions:

  • SMFS provides unparalleled detail on polymer properties.
  • The technique is versatile for studying diverse phenomena from chain dynamics to polymerization.
  • Future research can leverage SMFS for advanced polymer characterization.