What question did this study set out to answer?

The research aims to design chiral ligands for perovskite quantum dots, optimizing their luminescent properties.

March 13, 2026

Dynamic Coordination Geometry Transformation for Near-Unity PLQY and Photo-Tunable Full-Color Circularly Polarized Luminescence.

Puntos clave

The research aims to design chiral ligands for perovskite quantum dots, optimizing their luminescent properties.
Utilized l/d-proline to induce a coordination transition in PQDs.
Implemented a light-mediated halide exchange strategy for emission tuning.
Fabricated high-performance full-color circularly polarized light-emitting diodes.
Achieved a photoluminescence quantum yield of 99.69%.
Observed an emission dissymmetry factor of -2.1 × 10^-3, enhanced to 7.1 × 10^-3 with tuning.
Maintained high blue/red PLQYs of 88.96% and 91.42%, respectively.

Resumen

The rational design of chiral ligands for perovskite quantum dots (PQDs) and the understanding of their structure-property relationships is challenging. Herein, l/d-proline (l/d-Pro) induces a concentration-dependent coordination transition from monofunctional to bidentate mode, enabling defect passivation and chiral transfer. green chiral PQDs achieve 99.69% photoluminescence quantum yield (PLQY) and emission dissymmetry factor (glum) of -2.1 × 10-3. A light-mediated halide exchange strategy enables full-visible (440-760 nm) emission tuning, enhancing |glum| to 7.1 × 10-3 while maintaining high blue/red PLQYs (88.96%/91.42%) via enhanced octahedral distortion. High-performance full-color circularly polarized light-emitting diodes (CP-LEDs) and white LEDs are fabricated, providing a paradigm for chiral perovskite optoelectronic device design.

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Institutions

Southern Medical University

Guangxi University

Guangxi Medical University

References and Citations

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