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

Photoluminescence: Applications01:14

Photoluminescence: Applications

362
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...
362
Photoluminescence: Fluorescence and Phosphorescence01:23

Photoluminescence: Fluorescence and Phosphorescence

1.1K
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...
1.1K
Variables Affecting Phosphorescence and Fluorescence01:26

Variables Affecting Phosphorescence and Fluorescence

471
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...
471
Deactivation Processes: Jablonski Diagram01:25

Deactivation Processes: Jablonski Diagram

551
Luminescence, the emission of light by a substance that has absorbed energy, is a process that involves the interaction of molecules with light. The energy-level diagram, or Jablonski diagram, is a graphical representation of these interactions, illustrating the various states and transitions a molecule can undergo. In a typical Jablonski diagram, the lowest horizontal line represents the ground-state energy of the molecule, which is usually a singlet state. This state represents the energies...
551
Fluorescence and Phosphorescence: Instrumentation01:25

Fluorescence and Phosphorescence: Instrumentation

515
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.
515

You might also read

Related Articles

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

Sort by
Same author

Dual-Module Near-Infrared Fluorophores Discovery System via Knowledge Transfer.

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

White-Light-Excitable Deep-Red/NIR Organic Afterglow Nanoparticles for High-Contrast In Vivo Imaging.

Angewandte Chemie (International ed. in English)·2026
Same author

Off-On-Off Probes for Precise Theranostics.

Journal of the American Chemical Society·2026
Same author

An electron-density point-cloud framework for robust protein-ligand interaction prediction.

Nature communications·2026
Same author

Methyl-induced ring-locking strategy for concentration-independent MR-TADF emitters toward high-performance OLEDs with BT.2020 blue gamut.

Chemical science·2026
Same author

Unveiling the emission mechanism in analog-doped carbazole-based organic afterglow materials.

Nature communications·2026

Related Experiment Video

Updated: May 24, 2025

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials
07:12

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials

Published on: September 13, 2024

1.9K

Mechanoluminescence from Amorphous Organic Luminogens.

Zongliang Xie1, Huangjun Deng2, Xiangyu Ge3

  • 1Institute for Functional Intelligent Materials, National University of Singapore, Singapore 117544, Singapore.

Journal of the American Chemical Society
|March 2, 2025
PubMed
Summary

Researchers developed new organic amorphous mechanoluminescent (ML) materials. These flexible materials enable multicolor light emission from mechanical stress without needing crystals, improving practical applications.

More Related Videos

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

9.5K
In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria
05:52

In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria

Published on: June 28, 2018

11.6K

Related Experiment Videos

Last Updated: May 24, 2025

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials
07:12

Author Spotlight: Advancing Bioimaging and Therapy with Functional Nanomaterials

Published on: September 13, 2024

1.9K
Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core
08:51

Scale-up Chemical Synthesis of Thermally-activated Delayed Fluorescence Emitters Based on the Dibenzothiophene-S,S-Dioxide Core

Published on: October 24, 2017

9.5K
In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria
05:52

In Situ Measurement and Correlation of Cell Density and Light Emission of Bioluminescent Bacteria

Published on: June 28, 2018

11.6K

Area of Science:

  • Materials Science
  • Organic Electronics
  • Photonics

Background:

  • Mechanoluminescent (ML) materials convert mechanical energy into light, with applications in sensing and interfaces.
  • Current ML materials often require specific crystalline structures, limiting their processability and flexibility.
  • Organic amorphous ML materials offer potential for improved processability and novel functionalities.

Purpose of the Study:

  • To develop purely organic amorphous ML materials with enhanced flexibility and processability.
  • To investigate the mechanism of ML in amorphous organic materials.
  • To overcome the limitations of crystalline ML materials for practical applications.

Main Methods:

  • Synthesized a series of purely organic amorphous ML materials with flexible skeletons and twisted donor-acceptor-acceptor' structures.
  • Investigated the ML properties in amorphous states, including multicolor emission.
  • Characterized material properties such as glass transition temperatures and stress-induced molecular ordering.

Main Results:

  • Achieved multicolor ML in purely organic amorphous materials.
  • Demonstrated low glass transition temperatures, enabling facile in situ regeneration and processing.
  • Showed that stress-induced short-range molecular ordering generates local piezoelectricity, enabling ML without crystallinity.

Conclusions:

  • Introduced a new class of flexible, processable, purely organic amorphous ML materials.
  • Established a mechanism for ML in amorphous states via stress-induced local piezoelectricity.
  • Expanded the practical utility of organic ML systems for applications like flexible films and advanced sensing.