Tailored Fabrication of Full‐Color Ultrastable Room‐Temperature Phosphorescence Carbon Dots Composites with Unexpected Thermally Activated Delayed Fluorescence

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(27)

Published: April 23, 2024

Abstract The development of single‐system materials that exhibit both multicolor room‐temperature phosphorescence (RTP) and thermally activated delayed fluorescence (TADF) with tunable after glow colors channels is challenging. In this study, four metal‐free carbon dots (CDs) are developed through structural tailoring, panchromatic high‐brightness RTP achieved via strong chemical encapsulation in urea. maximum lifetime quantum yield reaches 2141 ms 56.55%, respectively. Moreover, CDs‐IV@urea, prepared coreshell interaction engineering, exhibits a dual afterglow red green TADF. degree conjugation functional groups precursors affects the binding interactions nitrogen cladding on CDs, which turn stabilizes triplet energy levels gap between S 1 T (Δ E ST ) to induce RTP. enhanced wrapping lowers Δ , promoting reverse intersystem crossing, leads This fully state, thus stabilizing material water, even extreme environments such as acids oxidants. These tested multicolor, time, temperature multiencryption well vivo bioimaging. Hence, these have promising practical applications information security biomedical diagnosis treatment.

Language: Английский

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Recent advances in highly-efficient near infrared OLED emitters

Materials Chemistry Frontiers, Journal Year: 2024, Volume and Issue: 8(7), P. 1731 - 1766

Published: Jan. 1, 2024

This work describes recent developments in near-infrared (NIR) organic light-emitting diode (OLED) emitters. We discuss applications of NIR OLEDs as well various groups highly luminescent materials used the OLED emissive layer.

Language: Английский

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Molecular design, synthesis, properties, and applications of organic triplet emitters exhibiting blue, green, red and white room-temperature phosphorescence

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(8), P. 2662 - 2698

Published: Jan. 1, 2024

Theoretical and experimental approaches for the development of organic room temperature phosphorescence compounds exhibiting blue, green, red, white emissions many potential applications are analysed classified.

Language: Английский

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A 3D Phosphorescent Supramolecular Organic Framework in Aqueous Solution

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(25)

Published: Feb. 4, 2024

Abstract Supramolecular organic framework (SOF) has recently garnered significant research interest in the field of luminescent materials. However, SOF with room‐temperature phosphorescence emission solution is very rare due to quenching dissolved oxygen and free molecular motions, which would lead nonradiative deactivation triplet exciton liquid state. In this work, a 3D cationic phosphorescent synthesized through host‐guest interaction between CB[8] tetrahedral monomer TBBP, can rapidly adsorb anionic guests solution. When dyes are introduced, singlet Förster resonance energy transfer (TS‐FRET) be achieved, delayed fluorescence large Stokes shift realized. Additionally, when drugs TBBP‐CB[8] quenched charge transfer, enabling detection signals. Taking advantage fast adsorption property SOF, an INHIBIT logic gate three inputs two outputs constructed. These findings provide novel method prepare functional materials new pathway construct TS‐FRET system

Language: Английский

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Ultralong sodium alginate-based room temperature phosphorescence materials with advantages of color tunability, flexibility and facile large-area fabrication

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 485, P. 149751 - 149751

Published: Feb. 20, 2024

Language: Английский

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Design and Synthesis of Aggregation-Induced Emission Photocage Molecules for In Situ Photoactivation Imaging Studies

Acta Chimica Sinica, Journal Year: 2024, Volume and Issue: 82(3), P. 265 - 265

Published: Jan. 1, 2024

Language: Английский

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3D Printed Room Temperature Phosphorescence Materials Enabled by Edible Natural Konjac Glucomannan

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(31)

Published: April 18, 2024

Shaping room temperature phosphorescence (RTP) materials into 3D bodies is important for stereoscopic optoelectronic displays but remains challenging due to their poor processability and mechanical properties. Here, konjac glucomannan (KGM) employed anchor arylboronic acids with various π conjugations via a facile B─O covalent reaction afford printable inks, using which full-color high-fidelity RTP objects high strength can be obtained direct ink writing-based printing freeze-drying. The doubly rigid structure supplied by the synergy of hydrogen bonding protect triplet excitons; thus, prepared object shows striking lifetime 2.14 s. printed counterparts are successfully used anti-counterfeiting recycled reprinted nondestructively dissolving in water. This success expands scope luminescent materials, providing an eco-friendly platform additive manufacturing sophisticated architectures.

Language: Английский

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Solid‐state room‐temperature phosphorescence activated by the end‐capping strategy of cyano groups

Aggregate, Journal Year: 2024, Volume and Issue: unknown

Published: April 15, 2024

Abstract Avoiding the tedious process of crystal cultivation and directly obtaining organic crystals with desirable phosphorescent performance is great significance for studying their structure properties. Herein, a set benzophenone‐cored phosphors bright green afterglow are obtained on large scale through in‐situ generation via an end‐capping strategy to suppress non‐radiative triplet excitons reinforce intermolecular interactions. The ordered arrangement alkyl‐cyano groups as regulators crucial enhancement room‐temperature phosphorescence (RTP) emission, which has been further verified by attenuated lifetimes in isolated states formation inclusion complexes upon binding pillar[5]arenes. Moreover, hierarchical interactions phosphors, including hydrogen bonding, π‐π stacking interactions, van der Waals forces, quantified structures theoretical calculation deeply interpret origins RTP emission. With this study, we provide potential direct acquisition crystalline modulation RTP.

Language: Английский

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Ultra-long room temperature phosphorescent materials based on tetraphenylethylene derivatives for anti-counterfeiting and encryption applications

Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 491, P. 152177 - 152177

Published: May 12, 2024

Language: Английский

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Atomic Engineering and Aggregation Effect to Regulate Synergistically Type I Reactive Oxygen Species of AIE‐Active Deep Red/Near Infrared Red Photosensitizer

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

Published: March 3, 2025

Abstract “Molecular science” has long been regarded as the golden rule to guide design of organic materials’ performances in past many years, but some interesting phenomena conventional aggregation‐caused fluorescence quenching and new aggregation‐induced emission reflect that properties would be changed from “molecule” “aggregate”. Therefore, “molecular theory faces certain limitations regulating performance materials at aggregation. In this work, it is discovered photosensitizer's contain reactive oxygen species, which could affected by changing molecular atoms aggregation form. The introduction selenium redshift improve species (ROS) efficiency. addition atomic effect, ROS efficiency photosensitizers after coating a polymeric shell, is, production type II singlet ( 1 O 2 ) suppressed, while I superoxide anion (O −• improved. This work discovers are relevant effect discussing deeply influence mechanism, important research significance for modulating precisely promoting development photodynamic therapy.

Language: Английский

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