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Ultralong-Lived Up-Conversional Room-Temperature Afterglow Materials with a Polyvinyl Alcohol Substrate

1
State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Fudan University, Shanghai 200438, China
2
State Key Laboratory of Molecular Engineering of Polymers, Department of Chemistry, Fudan University, Shanghai 200433, China
*
Author to whom correspondence should be addressed.
Academic Editors: Huacheng Zhang, Kim Truc Nguyen, Jie Han and Isurika R. Fernando
Polymers 2022, 14(12), 2414; https://doi.org/10.3390/polym14122414
Received: 16 May 2022 / Revised: 31 May 2022 / Accepted: 8 June 2022 / Published: 14 June 2022
(This article belongs to the Special Issue Functional Polymeric Systems for Advanced Industrial Applications)
Room-temperature afterglow (RTA) materials have a wide range of applications in imaging, lighting, and therapy, due to their long lifetime and persistent luminescence after the light source is removed. Additionally, near-infrared light with low energy and a high penetration rate ensures its irreplaceable importance in imaging and therapy. Thus, it is vital to design RTA materials excited by NIR. In the present study, we select up-conversion nanoparticles (UCNPs) as the donor and add them into hybrids, obtained by dispersing coronene tetra-carboxylate salt (CS) into a polyvinyl alcohol (PVA)-substrate through a series of mixing methods. Through radiation energy transfer between the donor UCNPs and the acceptor CS, a kind of RTA film with a photoluminescence lifetime of more than 2 s under NIR excitation was successfully achieved, and these films could maintain persistent naked-eye-distinguishable luminescence after withdrawing the excitation light source. Furthermore, the films obtained from UCNP doping into CS/PVA hybrids were found to exhibit better RTA performance than those from smearing. This idea of up-conversion afterglow broadens the tuning and application scope for polymer-based luminescent materials. View Full-Text
Keywords: room-temperature afterglow; photoluminescent lifetime; doping; smearing; up-conversional room-temperature afterglow; photoluminescent lifetime; doping; smearing; up-conversional
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MDPI and ACS Style

Zhou, L.; Wu, B.; Shi, B.; Zhu, X.; Shen, S.; Zhu, L. Ultralong-Lived Up-Conversional Room-Temperature Afterglow Materials with a Polyvinyl Alcohol Substrate. Polymers 2022, 14, 2414. https://doi.org/10.3390/polym14122414

AMA Style

Zhou L, Wu B, Shi B, Zhu X, Shen S, Zhu L. Ultralong-Lived Up-Conversional Room-Temperature Afterglow Materials with a Polyvinyl Alcohol Substrate. Polymers. 2022; 14(12):2414. https://doi.org/10.3390/polym14122414

Chicago/Turabian Style

Zhou, Lulu, Bin Wu, Ben Shi, Xinyan Zhu, Shen Shen, and Liangliang Zhu. 2022. "Ultralong-Lived Up-Conversional Room-Temperature Afterglow Materials with a Polyvinyl Alcohol Substrate" Polymers 14, no. 12: 2414. https://doi.org/10.3390/polym14122414

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