Stepwise Stiffening Chromophore Strategy Realizes a Series of Ultralong Blue Room‐Temperature Phosphorescent Materials

Abstract: Ultralong room‐temperature phosphorescent (URTP) materials have attracted wide attention in anti‐counterfeiting, optoelectronic display, and bio‐imaging due to their special optical properties. However, room‐temperature blue phosphorescent materials are very scarce during applications because of the need to simultaneously populate and stabilize high‐energy excited states. In this work, a stepwise stiffening chromophore strategy is proposed to suppress non‐radiative jump by continuously reducing the internal spin of the chromophore, and successfully developing a series of blue phosphorescent materials. Phosphorescence lifetimes of more than 3 s are achieved, with the longest lifetime reaching 5.44 s and lasting more than 70 s in the naked eye. As far as is know, this is the best result that has been reported. By adjusting the chromophore conjugation, multicolor phosphorescences from cyan to green have been realized. In addition, these chromophores exhibit the same excellent optical properties in urea and polyvinyl alcohmance (PVA). Finally, these materials are successfully applied to luminescent displays.

Standort
Deutsche Nationalbibliothek Frankfurt am Main
Umfang
Online-Ressource
Sprache
Englisch

Erschienen in
Stepwise Stiffening Chromophore Strategy Realizes a Series of Ultralong Blue Room‐Temperature Phosphorescent Materials ; day:24 ; month:06 ; year:2024 ; extent:10
Advanced science ; (24.06.2024) (gesamt 10)

Urheber
Guan, Zhihao
Tang, Zhaorun
Zeng, Jianwen
Zheng, Yuewei
Ding, Lin
Chen, Dongzhi
Li, Houbin
Liu, Xinghai

DOI
10.1002/advs.202402632
URN
urn:nbn:de:101:1-2406241412359.751646038207
Rechteinformation
Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
Letzte Aktualisierung
14.08.2025, 10:48 MESZ

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Beteiligte

  • Guan, Zhihao
  • Tang, Zhaorun
  • Zeng, Jianwen
  • Zheng, Yuewei
  • Ding, Lin
  • Chen, Dongzhi
  • Li, Houbin
  • Liu, Xinghai

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