articleAdvanced Functional MaterialsOct 30, 2022Closed access

Achieving Color‐Tunable and Time‐Dependent Organic Long Persistent Luminescence via Phosphorescence Energy Transfer for Advanced Anti‐Counterfeiting

DWDeliang WangJGJunyi GongYXYu XiongHWHongzhuo WuZZZheng Zhao

Shenzhen University · Chinese University of Hong Kong, Shenzhen · +1 more institution

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Abstract

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 lifetime of 2.04 s and a high phosphorescence quantum yield of 44.1%. Theoretical calculations reveal that this excellent RTP property can be attributed to the strong electrostatic attraction…

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252
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Authors

7

Topics & keywords

Topics
Keywords
  • Phosphorescence
  • Materials science
  • Luminescence
  • Doping
  • Vinyl alcohol
  • Persistent luminescence
  • Photochemistry
  • Energy transfer
UN Sustainable Development Goals
  • Affordable and clean energy
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