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Nonconventional luminophores with unprecedented efficiencies and color-tunable afterglows

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Abstract

Nonconventional luminophores without significant conjugations generally possess excitation-dependent photoluminescence (PL) owing to the coexistence of diverse clustered chromophores, which strongly implies the possibility of achieving color-tunable PL and/or persistent room temperature phosphorescence (p-RTP) from their crystals assisted by effective intermolecular interactions. Compared with traditional luminogens, however, nonconventional luminophores generally suffer from poor PL efficiencies. Here, inspired by the highly stable double-helix structure and multiple hydrogen bonds in DNA, we report a series of planar or twisted nonconventional luminophores based on hydantoin (HA), demonstrating unprecedentedly high PL/p-RTP efficiencies and p-RTP lifetimes of up to 87.5%/21.8% and 1.74 s, respectively, accompanying color-tunable p-RTP from sky-blue to yellowish-green. These findings will advance the exploitation of efficient nonconventional luminophores and provide deeper mechanistic insights into the origin of color-tunable p-RTP.

Graphical abstract: Nonconventional luminophores with unprecedented efficiencies and color-tunable afterglows

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Supplementary files

Article information


Submitted
25 Apr 2020
Accepted
19 May 2020
First published
19 May 2020

Mater. Horiz., 2020, Advance Article
Article type
Communication

Nonconventional luminophores with unprecedented efficiencies and color-tunable afterglows

Y. Wang, S. Tang, Y. Wen, S. Zheng, B. Yang and W. Z. Yuan, Mater. Horiz., 2020, Advance Article , DOI: 10.1039/D0MH00688B

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