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Photoluminescence: Applications

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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...

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Related Experiment Video

Updated: Mar 27, 2026

Fabrication of White Light-emitting Electrochemical Cells with Stable Emission from Exciplexes

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Published on: November 15, 2016

Electroluminescence from Spontaneously Generated Single-Vesicle Aggregates Using Solution-Processed Small Organic

Yu-Tang Tsai^1,2, Kuo-Pi Tseng³, Yan-Fang Chen^1,2

¹Institute of Molecular Science, CNRS UMR 5255 and University of Bordeaux , F-33405 Talence, France.

|January 6, 2016

Summary

Researchers developed new molecules that self-assemble into small, controllable organic light-emitting domains. These self-assembled aggregates enable tunable size and color for advanced electroluminescent devices.

Keywords:

biuret molecular electronics soft matter supramolecular chemistry

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Area of Science:

Materials Science
Organic Electronics
Nanotechnology

Background:

Self-assembled aggregates are crucial for controlling organic semiconductor morphology.
Existing electroluminescent (EL) devices lack control over emissive domain size and color via self-assembly.

Purpose of the Study:

To develop molecules that self-organize into tunable, sub-micrometer emissive domains for EL applications.
To demonstrate control over the size and color of emissive domains using molecular design.

Main Methods:

Synthesized a series of molecules with tailored emissive chromophores.
Investigated spontaneous self-assembly in solution to form spherical aggregates.
Fabricated EL devices using patterned electrodes and a sandwich architecture.

Main Results:

Achieved spontaneous formation of spherical aggregates with an average size of 300 nm.
Demonstrated emission tuning across blue, green, red, and white (CIE D65) colors.
Created a functional RGB electroluminescent device using sequential deposition of primary color aggregates.

Conclusions:

Successfully controlled the size and color of emissive domains in organic semiconductors through self-assembly.
Paved the way for novel, high-performance electroluminescent devices with tailored optical properties.