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Issue 26, 2021
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A color-tunable single-component luminescent molecule with multiple emission centers

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Abstract

For achieving smart materials with color-tunable emissions, the development of single-component systems exhibiting high durability and stability is desired but remains challenging, in comparison to multicomponent systems. Here, a single-component luminescent molecule (3-SPhF) with colorful emissions is successfully reported through different expressions of triplet excitons in radiative transitions. The time-resolved spectra confirm the existence of delayed fluorescence (τ = 282.5 μs), monomeric phosphorescence (τ = 497.7 ms) and aggregated-state phosphorescence (τ = 230.0 ms) in the crystal powder of 3-SPhF, which affords time-dependent afterglow and excitation-dependent emissions in a steady state. Furthermore, the relationships between ultra-long luminescence and stacking of the dibenzofuran group in single crystals are explored, providing evidence for the regularity of multiple emission centers in single-component compounds with dibenzofuran substituents.

Graphical abstract: A color-tunable single-component luminescent molecule with multiple emission centers

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Supplementary files

Article information


Submitted
15 Apr 2021
Accepted
03 Jun 2021
First published
04 Jun 2021

This article is Open Access
All publication charges for this article have been paid for by the Royal Society of Chemistry

Chem. Sci., 2021,12, 9201-9206
Article type
Edge Article

A color-tunable single-component luminescent molecule with multiple emission centers

J. Chen, X. Chen, Y. Liu, Y. Li, J. Zhao, Z. Yang, Y. Zhang and Z. Chi, Chem. Sci., 2021, 12, 9201 DOI: 10.1039/D1SC02094C

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