Related Experiment Video
Updated: Aug 11, 2026

Time-resolved Photophysical Characterization of Triplet-harvesting Organic Compounds at an Oxygen-free Environment Using an iCCD Camera
Published on: December 27, 2018
Intermolecular interaction and a concentration-quenching mechanism of phosphorescent Ir(III) complexes in a solid
Yuichiro Kawamura1, Jason Brooks, Julie J Brown
1CREST program, Japan Science and Technology Agency (JST), 1-32-12 Higashi, Shibuya, Tokyo 150-0011, Japan.
Abstract:
Solid-state self-quenching processes of highly efficient Ir(III) phosphorescent emitters are investigated by the measurement of thin film photoluminescence quantum efficiency and transient lifetime as a function of doping concentration in a host matrix. The radiative decay rate constant is found to be independent from the average distance between dopant molecules (R), and the concentration-quenching rate constant is shown to be dependent on R(-6). The quenching dependence on R strongly suggests that luminescent concentration quenching in a phosphorescent Ir(III) complex:host film is controlled by dipole-dipole deactivating interactions as described by the Förster energy transfer model.
More Related Videos
Related Concept Videos
Photoluminescence: Applications
Variables Affecting Phosphorescence and Fluorescence
Photoluminescence: Fluorescence and Phosphorescence
A pair of electrons in a...
Fluorescence and Phosphorescence: Instrumentation
Total Internal Reflection Fluorescence Microscopy
Deactivation Processes: Jablonski Diagram

