Amorphous Aggregation Enhanced Room Temperature Phosphorescence Emission From Naphthalimide Derivative DOI Open Access
Yi Li,

Shiman Tang,

Kaiti Wang

et al.

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: March 8, 2025

Abstract In recent years, organic room temperature phosphorescence (RTP) materials have been well developed. Especially, when the compounds are doped into a rigid polymeric matrix, their RTP performances can be greatly enhanced. However, dispersibility and stability of difficult to controlled. Herein, an amorphous homo‐polymer ( P1 ) containing naphthalimide units is synthesized further dispersed polyvinyl alcohol (PVA) matrix via solution mixing procedure. The resultant composites P1@PVA exhibit yellow afterglow under temperature. , chromophores constrained in aggregation state. Unlike crystalline state, intermolecular interactions between aggregated enhanced, while π–π interaction weakened. presence PVA, non‐radiative decay synergistically suppressed by external hydrogen bonds internal interactions. As results, much Comparing with PVA compounds, lifetime prolonged as 1.5 folds.

Language: Английский

Amorphous Aggregation Enhanced Room Temperature Phosphorescence Emission From Naphthalimide Derivative DOI Open Access
Yi Li,

Shiman Tang,

Kaiti Wang

et al.

Macromolecular Chemistry and Physics, Journal Year: 2025, Volume and Issue: unknown

Published: March 8, 2025

Abstract In recent years, organic room temperature phosphorescence (RTP) materials have been well developed. Especially, when the compounds are doped into a rigid polymeric matrix, their RTP performances can be greatly enhanced. However, dispersibility and stability of difficult to controlled. Herein, an amorphous homo‐polymer ( P1 ) containing naphthalimide units is synthesized further dispersed polyvinyl alcohol (PVA) matrix via solution mixing procedure. The resultant composites P1@PVA exhibit yellow afterglow under temperature. , chromophores constrained in aggregation state. Unlike crystalline state, intermolecular interactions between aggregated enhanced, while π–π interaction weakened. presence PVA, non‐radiative decay synergistically suppressed by external hydrogen bonds internal interactions. As results, much Comparing with PVA compounds, lifetime prolonged as 1.5 folds.

Language: Английский

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