Related Experiment Video
Updated: Aug 19, 2025

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Full-color Persistent Room-temperature Phosphorescence from Carbon Dot Composites Based on a Single Nonaromatic
Xiaolang Wang1, Shuaiqi Wang1, Yuanshan Huang1
1Fujian Key Laboratory of Polymer Materials, College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, 350007, China.
Researchers developed novel carbon dot composites (CDC) exhibiting tunable, long-lived room-temperature phosphorescence (RTP). These materials offer potential for advanced anti-counterfeiting, fingerprint identification, and optoelectronic applications.
Area of Science:
- Materials Science
- Nanotechnology
- Photochemistry
Background:
- Room-temperature phosphorescence (RTP) materials are crucial for advanced optical applications.
- Developing stable, tunable, and efficient RTP materials remains a significant challenge.
Purpose of the Study:
- To synthesize novel carbon dot composites (CDC) with tunable, long-lived room-temperature phosphorescence (RTP).
- To explore the photophysical properties and potential applications of these CDC materials.
Main Methods:
- A simple solid-phase one-step method was employed using a single non-conjugated and non-aromatic carbon source.
- Tuning of RTP emission wavelength was achieved by adjusting feeding ratio and reaction temperature.
Main Results:
- Full-color and long-lived RTP emission (462–623 nm) was achieved in CDC.
- A green emissive CDC (AB-CDC-3) demonstrated a luminescent lifetime of 1.1 s and 39% quantum yield.
- CDC exhibited excitation wavelength-dependent RTP and white emission, with a single-component afterglow luminescent diode achieving a color-rendering index of 88.
Conclusions:
- The developed CDC possess unique photophysical properties, including tunable and long-lived RTP.
- These materials show significant potential for multilevel anti-counterfeiting, fingerprint identification, and optoelectronic devices.
More Related Videos
Related Concept Videos
Photoluminescence: Applications
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Variables Affecting Phosphorescence and Fluorescence
Fluorescence and Phosphorescence: Instrumentation

