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Photoluminescence: Applications

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...

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Related Experiment Video

Updated: Jul 31, 2025

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Fabrication of Polymer Microspheres for Optical Resonator and Laser Applications

Published on: June 2, 2017

Tunable Red Clusteroluminescence Polymers Prepared by a Simple Heating Process.

Xiang Chen¹, Chenxi Hu², Yang Wang¹

¹The Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.

ACS Applied Materials & Interfaces

|May 5, 2023

Summary

Researchers developed tunable red-emitting polymer derivatives using a simple heating process. These clusteroluminescence (CL) materials offer adjustable wavelengths and higher quantum yields, with potential agricultural applications.

Keywords:

clusteroluminescence glass transition temperature heating process light conversion film through-space conjugation tunable red emission

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Last Updated: Jul 31, 2025

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Published on: June 8, 2016

Area of Science:

Materials Science
Polymer Chemistry
Photophysics

Background:

Clusteroluminescence (CL) is a growing field, but tunable red-emitting clusteroluminogens (CLgens) are underdeveloped.
Controlling CL properties in polymers remains a challenge.

Purpose of the Study:

To develop red-emitting poly(maleic anhydride-alt-vinyl acetate) (PMV) derivatives with tunable clusteroluminescence.
To investigate the mechanism of tunable emission and enhanced quantum yield through controlled heating.

Main Methods:

A simple heating process was employed to modify PMV polymers.
Heating above the glass transition temperature (Tg) induced polymer chain movement and cluster formation.
Further heating beyond decomposition temperature facilitated new cluster formation and through-space conjugation.

Main Results:

Tunable red emission was achieved with maximum wavelengths ranging from 620 to 675 nm.
Synergistic effects of heating led to adjustable emission and higher quantum yields.
Low-cost, eco-friendly core-shell PMV particles were synthesized and showed compatibility with polyethylene.

Conclusions:

The developed heating method provides a facile route to tunable red-emitting CLgens.
PMV derivatives show promise as agricultural light conversion agents.
The study highlights the potential of controlled thermal processing for tuning polymer photophysical properties.