Aggregation-Induced Emission Carbon Dot-Based Multicolor Circularly Polarized Afterglow with a High Luminescence Dissymmetry Factor DOI
Rui Guo, Zhengrong Ling, Bin Zheng

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 16(1), P. 140 - 147

Published: Dec. 20, 2024

Carbon dots (CDs) with circularly polarized afterglow (CPA) materials have drawn increasing attention as cutting-edge research in the field of chiral luminescence owing to their promising applications various fields. However, due weak optical activity CDs and limited color phosphorescent CDs, it is still a formidable challenge construct multicolor CD-based CPA high dissymmetry factor (glum). Herein, positively charged aggregation-induced emission (AIE) were prepared using dithiosalicylic acid ionic liquid precursors. Encapsulating AIE nematic structure negatively cellulose nanocrystal (CNC) films enabled production surprising warm white glum up −0.16. To further expand afterglow, phosphorescence resonance energy transfer between commercial fluorescent dyes was constructed CNC films. Finally, potential advanced dynamic information encryption explored by virtue different lifetimes.

Language: Английский

Asymmetric optical waveguide in one‐dimensional organic microplate DOI Creative Commons

Ziyi Yuan,

Xiu‐Fen Cheng,

Zejian Li

et al.

Deleted Journal, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

Abstract Chiral organic materials have garnered significant interest in nanophononics due to their ability manipulate polarized light and encode optical information. Herein, chiral one‐dimensional (1D) microplates based on benzocyclazine form homochiral crystals that exhibit excellent waveguiding properties. These exhibited highly asymmetric propagation depends the handedness of circularly (CPL). demonstrated selective transmission, with R ‐microplate favouring left‐handed CPL S right‐handed CPL, showcasing distinct loss coefficients for each enantiomer. Multichannel was observed, where intensity varied excitation position. results highlight potential 1D advanced nanophotonic devices, offering chiral‐dependent control over transmission future applications information processing.

Language: Английский

Citations

0
Chiral cocrystals with circularly polarized persistent phosphorescence and large second harmonic generation DOI
Yongbo Peng,

Guoxing Zhou,

Rongyan Zhang

et al.

Surfaces and Interfaces, Journal Year: 2025, Volume and Issue: unknown, P. 106114 - 106114

Published: Feb. 1, 2025

Language: Английский

Citations

0
Light‐Dynamic Chirality Inversion of Circularly Polarized Organic Ultralong Room‐Temperature Phosphorescence Enabled by Soft Helical Superstructure DOI

Jiao Liu,

Zhen‐Peng Song,

Juan Wei

et al.

Advanced Optical Materials, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 27, 2025

Abstract Dynamic and reversible manipulation of circularly polarized luminescence (CPL) in soft materials is highly desirable for advanced chiroptical devices, information encryption, labeling technology. However, this remains a formidable challenge organic ultralong room‐temperature phosphorescence (CP‐OURTP) materials. Herein, bilayered chiral‐switchable CP‐OURTP system presented, composed light‐driven hydrazone photoswitch (M1)‐doped helical superstructure layer room temperature (RTP) polymer layer, enabling dynamic chirality inversion manner under alternating stimulation 460 340 nm light irradiation. The obtained film exhibits with maximum absolute dissymmetry factor ( g lum ) value 0.39 long‐lived emission lifetime 823 ms. Notably, the values can be dynamically reversibly modulated between +0.30 and−0.35 irradiation different wavelengths over 50 cycles without fatigue, owing to photoinduced configuration changes M1, making first example regulating

Language: Английский

Citations

0
2D/3D Geometric Multiplexing via Orthogonal Control of Circularly Polarized Transmission and Long Afterglow Imaging DOI
Jiahe Li, Hongli Zhang, Yunfei Yan

et al.

Small, Journal Year: 2025, Volume and Issue: unknown

Published: April 10, 2025

Abstract Multiplexed optical imaging is highly desirable for enhancing information security. However, shaping optically active materials with circularly polarized long afterglow (CPLA) into 3D geometric structures multiplexing stereoscopic display and multidirectional encryption remains a significant challenge. Herein, novel strategy proposed designing multiplexed patterns using twisted‐stacking hierarchical that exhibit remarkable activity CPLA properties. The hybrid films dynamically orthogonal control of transmission in daylight switchable images darkness, both which can be directly viewed by the naked eye left‐ or right‐handed filters, independently modulated without mutual interference during dynamic regulation process. Furthermore, it demonstrated this integrated platform utilized as multimodal image toward advanced anti‐counterfeiting applications.

Language: Английский

Citations

0
Helically Assembled Rare Earth Fluoride Nanoparticles with Multicolor Circularly Polarized Luminescence for High‐Security Anti‐Counterfeiting DOI Creative Commons
Wentao Yuan, Shan Lu, Xingjun Li

et al.

Aggregate, Journal Year: 2025, Volume and Issue: unknown

Published: April 15, 2025

ABSTRACT Multicolor circularly polarized luminescence (CPL) materials show considerable potential in the field of advanced anti‐counterfeiting. However, it remains challenging to achieve stable inorganic with multicolor CPL. In this work, for first time, chiroptical rare earth (RE) fluoride nanoparticles induced by helical silica are obtained through a facile situ assembly strategy. The influence ratio and morphological structure on dissymmetry factor (g lum ) has been systematically investigated, leading an optimized g value 4.7 × 10 −3 . By adjusting types concentrations RE dopants (Ce 3+ , Tb Eu ), nanocomposites exhibit CPL time‐resolved photoluminescence characteristics. Remarkably, these retain their activity even after calcination at 400°C. Leveraging visible emissions, along hidden dynamic signals, successfully applied high‐security anti‐counterfeiting patterns multilevel optical encryption codes.

Language: Английский

Citations

0
Fabricating polarization materials with subnanowires DOI Creative Commons
Jiangxiao Li, Jiatao Zhang, Simin Zhang

et al.

Fundamental Research, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Language: Английский

Citations

0
Aggregation-Induced Emission Carbon Dot-Based Multicolor Circularly Polarized Afterglow with a High Luminescence Dissymmetry Factor DOI
Rui Guo, Zhengrong Ling, Bin Zheng

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 16(1), P. 140 - 147

Published: Dec. 20, 2024

Carbon dots (CDs) with circularly polarized afterglow (CPA) materials have drawn increasing attention as cutting-edge research in the field of chiral luminescence owing to their promising applications various fields. However, due weak optical activity CDs and limited color phosphorescent CDs, it is still a formidable challenge construct multicolor CD-based CPA high dissymmetry factor (glum). Herein, positively charged aggregation-induced emission (AIE) were prepared using dithiosalicylic acid ionic liquid precursors. Encapsulating AIE nematic structure negatively cellulose nanocrystal (CNC) films enabled production surprising warm white glum up −0.16. To further expand afterglow, phosphorescence resonance energy transfer between commercial fluorescent dyes was constructed CNC films. Finally, potential advanced dynamic information encryption explored by virtue different lifetimes.

Language: Английский

Citations

0