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. 2020 Jun;32(22):e2001026.
doi: 10.1002/adma.202001026. Epub 2020 Apr 22.

Two Are Better Than One: A Design Principle for Ultralong-Persistent Luminescence of Pure Organics

Parvej Alam  1 , Nelson L C Leung  1 , Junkai Liu  1 , Tsz Shing Cheung  1 , Xuepeng Zhang  1 , Zikai He  2 , Ryan T K Kwok  1 , Jacky W Y Lam  1 , Herman H Y Sung  1 , Ian D Williams  1 , Christopher C S Chan  3 , Kam Sing Wong  3 , Qian Peng  4 , Ben Zhong Tang  1   5   6
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Two Are Better Than One: A Design Principle for Ultralong-Persistent Luminescence of Pure Organics

Parvej Alam et al. Adv Mater. 2020 Jun.

Abstract

Because of their innate ability to store and then release energy, long-persistent luminescence (LPL) materials have garnered strong research interest in a wide range of multidisciplinary fields, such as biomedical sciences, theranostics, and photonic devices. Although many inorganic LPL systems with afterglow durations of up to hours and days have been reported, organic systems have had difficulties reaching similar timescales. In this work, a design principle based on the successes of inorganic systems to produce an organic LPL (OLPL) system through the use of a strong organic electron trap is proposed. The resulting system generates detectable afterglow for up to 7 h, significantly longer than any other reported OLPL system. The design strategy demonstrates an easy methodology to develop organic long-persistent phosphors, opening the door to new OLPL materials.

Keywords: charge recombination, charge separation; charge transfer, organic long-persistent luminescence, phosphonium salts.

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References

    1. W. M. Yen, M. J. Weber, Inorganic Phosphors: Compositions, Preparationand Optical Properties, CRC Press, Boca Raton, FL, USA 2004.
    1. J. Xu, S. Tanabe, J. Lumin. 2019, 205, 581.
    1. Z. Li, Y. Zhang, X. Wu, L. Huang, D. Li, W. Fan, G. Han, J. Am. Chem. Soc. 2015, 137, 5304.
    1. T. Maldiney, A. Bessière, J. Seguin, E. Teston, S. K. Sharma, B. Viana, A. J. J. Bos, P. Dorenbos, M. Bessodes, D. Gourier, D. Scherman, C. Richard, Nat. Mater. 2014, 13, 418.
    1. H. Sun, L. Pan, X. Piao, Z. Sun, J. Colloid Interface Sci. 2014, 416, 81.

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