Regulating Room-Temperature Phosphorescence of Organic Luminophores Through Stepwise Stabilization by Coordination and In-Situ Precipitation Reaction.

Chemistry

State Key Laboratory of New Pharmaceutical Preparations and Excipients, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis, Ministry of Education, College of Chemistry & Materials Science, Hebei University, Baoding, 071002, P. R China.

Published: November 2024

AI Article Synopsis

  • * This approach resulted in high emission efficiency with a phosphorescence quantum yield of 45%, enhancing the stability of the excited states of the materials.
  • * The findings suggest potential applications of these RTP materials in information encryption, indicating broader uses for this technology across various fields.

Article Abstract

Developing efficiency and long-lived room-temperature phosphorescence (RTP) materials through straightforward methods is highly desired. In this work, a stepwise stabilization strategy was proposed by the coordination and in-situ precipitation reactions among organic precursors, inorganic cation and anions, producing room-temperature phosphorescence materials with high emission efficiency (phosphorescence quantum yield of 45 %). Structural and photophysical characterizations revealed the coordination reaction reduced the energy gaps between singlet and triplet states and stabilized the excited states of the guest molecules. The in-situ precipitation reaction produced a solid matrix, which provided isolated environments for protecting the excitons from quenching. The applications of RTP materials in information encryption were demonstrated. The presented results provided a new clue for producing RTP materials, and extended their applications in wide fields.

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http://dx.doi.org/10.1002/chem.202403829DOI Listing

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