2022
DOI: 10.1002/adfm.202208895
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Achieving Color‐Tunable and Time‐Dependent Organic Long Persistent Luminescence via Phosphorescence Energy Transfer for Advanced Anti‐Counterfeiting

Abstract: Organic ultralong room‐temperature phosphorescence (RTP) materials have promising applications in anti‐counterfeiting. To improve the encryption level, the exploration of organic materials with tunable solid‐state long persistent luminescence is in urgent need. Herein, a series of organic ultralong RTP polymeric systems are prepared by doping versatile indolocarbazole isomers into the poly(vinyl alcohol) (PVA) matrix. Notably, the doping film 11,12‐ICz@PVA exhibits excellent RTP property with an ultralong life… Show more

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Cited by 123 publications
(57 citation statements)
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“…8a and b), respectively, indicating that the delayed emissions should originate from phosphorescence. 11 The delayed lifetimes and phosphorescence quantum yields of PMMA/IQ-H and PMMA/ IQ-Me are determined to be 72 and 96 ms (Fig. S12a and b †), and 2.0 and 2.9%, respectively.…”
Section: Crystal Structuresmentioning
confidence: 96%
“…8a and b), respectively, indicating that the delayed emissions should originate from phosphorescence. 11 The delayed lifetimes and phosphorescence quantum yields of PMMA/IQ-H and PMMA/ IQ-Me are determined to be 72 and 96 ms (Fig. S12a and b †), and 2.0 and 2.9%, respectively.…”
Section: Crystal Structuresmentioning
confidence: 96%
“…Organic room‐temperature phosphorescence (RTP) materials have attracted immense attention due to their peculiar photophysical process and potential applications in advanced printable and writable security inks, [ 1‐4 ] high‐resolution bioimaging, [ 5‐7 ] microenvironment oxygen visual sensing and quantitative detection. [ 8‐11 ] Several attempts have been made to develop high‐performance RTP materials, including the introduction of heavy atoms or halogen/hydrogen bonding, [ 12‐17 ] doping in a rigid matrix, [ 18‐26 ] construction of metal‐organic frameworks, [ 27‐28 ] and ionic‐π interactions.…”
Section: Background and Originality Contentmentioning
confidence: 99%
“…For example, indolocarbazole isomers doped in a poly(vinyl alcohol) matrix exhibited strong cyan RTP emission ( Φ p = 5%–44%) with a long lifetime (0.38–2.04 s). 89 In combination with the fluorescent dye, the afterglow emission color was tuned from cyan to green to red, and the potential for anti-counterfeiting applications was demonstrated. Another paper reported intramolecular RT FRET T-S in a copolymer containing an afterglow host and a narrowband A core, leading to narrowband afterglow emission from the A core via RT FRET T-S .…”
Section: Recent Progress In Rt Fret Involving the Triplet State From ...mentioning
confidence: 99%