Thermally Activated Delayed Fluorescence Dye‐Sensitized Down‐Conversion Nanoparticles for Near‐Infrared Luminescence Enhancement DOI

Tongtong Liu,

Ning Liang,

Xiaomeng Liu

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 13(1)

Published: Sept. 24, 2024

Abstract Dye‐sensitized down‐conversion nanoparticles (DCNPs) can significantly enhance photon absorption, bridging the gap of narrow and weak absorption cross‐section lanthanide (Ln) ions, thus fundamentally prompting their near‐infrared (NIR) emission. However, ideal strategy for utilization both singlet triplet energy dyes is hindered by nanostructures dependence on heavy atom effect. Herein, thermally activated delayed fluorescence (TADF) dye utilized with a small singlet‐triplet as antenna, achieving 733 fold emission enhancement. This facilitates efficient intersystem crossing (ISC) reverse (RISC) processes, enabling effective transfer from (S 1 ) (T excitons to emitted levels Er 3+ . Combining highly Erbium‐doped nanoparticles, water‐dispersed AD‐sensitized system shows excellent hydrodynamic stability photostability. innovative approach marks first report TADF dye‐sensitized Ln nanosystems, offering new direction photo conversion technology.

Language: Английский

Cyclometalated binuclear platinum(II) complexes with an embedded D-A ligand as efficient phosphors for NIR-OLEDs DOI
Wei Xiong, Yuanyuan Fang, Fanyuan Meng

et al.

Dyes and Pigments, Journal Year: 2025, Volume and Issue: unknown, P. 112731 - 112731

Published: Feb. 1, 2025

Language: Английский

Citations

0
High circularly polarized luminescence based on hydrogen-bonding columnar mesophase of an AIE-active mesogen with stronger D-A structure DOI
Hongyu Guo, Yanling Huang,

Liangbin Lin

et al.

Journal of Molecular Liquids, Journal Year: 2025, Volume and Issue: unknown, P. 127323 - 127323

Published: March 1, 2025

Language: Английский

Citations

0
Delayed Fluorescence and Amplified Chirality via Modified Substitution Position for Deep-red Circularly Polarized Organic Light Emitting-diodes DOI Creative Commons
Lixun Zhu, Dan Liu, Kaiwen Wu

et al.

Published: May 14, 2024

Developing easily accessible deep-red/near-infrared circularly polarized emitters for practical organic light-emitting diodes remains a significant challenge. Here, strategy has been proposed developing deep-red delayed fluorescent based on novel chiral acceptor platform. By changing triphenylamine (TPA) substitution position from para to meta, R/S-M-TBBTCN demonstrated thermally activated fluorescence (TADF) properties with lifetime of 6.6 μs that R/S-P-TBBTCN doesn’t have. Furthermore, showed 20 nm red-shift in emission and 10-fold enhancement asymmetry factor (glum), compared R/S-P-TBBTCN. The solution-processed nondoped (CP-OLEDs) R-M-TBBTCN display 2.2% external quantum efficiency.

Language: Английский

Citations

1
Novel AIE liquid crystals with high CPL-active bearing multiple dodecyl/cholesterol-decorated R-BINOL-cyanostilbene DOI

Huiyi Feng,

Ming‐Ming Li, Sheng Wang

et al.

Journal of Molecular Structure, Journal Year: 2024, Volume and Issue: 1320, P. 139726 - 139726

Published: Aug. 22, 2024

Language: Английский

Citations

1
有机近红外圆偏振发光材料研究进展 DOI

Jianxun Liu,

Ning Liang,

Yansong Feng

et al.

Scientia Sinica Chimica, Journal Year: 2024, Volume and Issue: 54(8), P. 1277 - 1288

Published: Aug. 1, 2024

Citations

0
Thermally Activated Delayed Fluorescence Dye‐Sensitized Down‐Conversion Nanoparticles for Near‐Infrared Luminescence Enhancement DOI

Tongtong Liu,

Ning Liang,

Xiaomeng Liu

et al.

Advanced Optical Materials, Journal Year: 2024, Volume and Issue: 13(1)

Published: Sept. 24, 2024

Abstract Dye‐sensitized down‐conversion nanoparticles (DCNPs) can significantly enhance photon absorption, bridging the gap of narrow and weak absorption cross‐section lanthanide (Ln) ions, thus fundamentally prompting their near‐infrared (NIR) emission. However, ideal strategy for utilization both singlet triplet energy dyes is hindered by nanostructures dependence on heavy atom effect. Herein, thermally activated delayed fluorescence (TADF) dye utilized with a small singlet‐triplet as antenna, achieving 733 fold emission enhancement. This facilitates efficient intersystem crossing (ISC) reverse (RISC) processes, enabling effective transfer from (S 1 ) (T excitons to emitted levels Er 3+ . Combining highly Erbium‐doped nanoparticles, water‐dispersed AD‐sensitized system shows excellent hydrodynamic stability photostability. innovative approach marks first report TADF dye‐sensitized Ln nanosystems, offering new direction photo conversion technology.

Language: Английский

Citations

0