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Two Are Better Than One: A Design Principle for Ultralong‐Persistent Luminescence of Pure Organics
Author(s) -
Alam Parvej,
Leung Nelson L. C.,
Liu Junkai,
Cheung Tsz Shing,
Zhang Xuepeng,
He Zikai,
Kwok Ryan T. K.,
Lam Jacky W. Y.,
Sung Herman H. Y.,
Williams Ian D.,
Chan Christopher C. S.,
Wong Kam Sing,
Peng Qian,
Tang Ben Zhong
Publication year - 2020
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202001026
Subject(s) - afterglow , luminescence , persistent luminescence , materials science , phosphor , nanotechnology , multidisciplinary approach , work (physics) , range (aeronautics) , engineering physics , optoelectronics , physics , thermodynamics , social science , gamma ray burst , thermoluminescence , astronomy , sociology , composite material
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.