Selective Lower-Occupied Through-Bond Interactions for Efficient Organic Phosphorescence Enabling High-Resolution Long-Wavelength Afterglow

Selective Lower-Occupied Through-Bond Interactions for Efficient Organic Phosphorescence Enabling High-Resolution Long-Wavelength Afterglow

© 2025 Wiley‐VCH GmbH.

Bibliographische Detailangaben
Veröffentlicht in:Advanced materials (Deerfield Beach, Fla.). - 1998. - (2025) vom: 24. Apr., Seite e2502611
1. Verfasser: Mulimani, Rajashekhar K (VerfasserIn)
Weitere Verfasser: Ueda, Sakuya, Miyashita, Ryo, Tsuru, Rana, Hayashi, Kikuya, Shimura, Riku, Sk, Bahadur, Matsuda, Shinji, Hirata, Shuzo
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2025
Zugriff auf das übergeordnete Werk:Advanced materials (Deerfield Beach, Fla.)
Schlagworte:Journal Article afterglow emission energy gap law high‐resolution imaging nanoparticle phosphorescence
Beschreibung
Zusammenfassung:© 2025 Wiley‐VCH GmbH.
Persistent organic room-temperature phosphorescence (RTP) enables high-resolution afterglow bioimaging, independent of autofluorescence. However, the yield of organic RTP in the long-wavelength region is generally low, which limits the high-resolution information that can be obtained from the long-wavelength region. Moreover, this makes it impossible to obtain multicolor and high-resolution afterglow images. This report describes a molecule containing no atoms from the fourth or higher period that exhibits efficient red RTP in high yield. A molecule with red phosphorescent chromophores substituted with multiple phenylthio groups reached an RTP yield of 46.3% and an RTP lifetime of 0.43 s in an appropriate crystalline host medium. The selective lower-occupied through-bond or through-space interactions among molecules significantly enhance the phosphorescence in the long-wavelength region. The highly efficient and bright red persistent RTP induces a red afterglow from individual nanoparticles. Tuning the selective lower-occupied through-bond or through-space interactions allows for the design of high-performance RTP dyes and offers a novel approach to explore high-resolution full-color afterglow imaging
Beschreibung:Date Revised 24.04.2025
published: Print-Electronic
Citation Status Publisher
ISSN:1521-4095
DOI:10.1002/adma.202502611