Long-lived dynamic room temperature phosphorescent carbon dots for advanced sensing and bioimaging applications

Coordination Chemistry Reviews, Год журнала: 2024, Номер 516, С. 215987 - 215987

Опубликована: Май 31, 2024

Язык: Английский

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Hydrogen Bond‐Mediated Self‐Assembly of Carbon Dots Enabling Precise Tuning of Particle and Cluster Luminescence for Advanced Optoelectronic Applications

Advanced Materials, Год журнала: 2024, Номер unknown

Опубликована: Ноя. 19, 2024

The effective control over the self-assembly process of carbon dots (CDs) and their cluster luminescence in aggregated state is paramount significance challenge. This study, for first time, systematically explores photoluminescent behavior CDs state, which less understood compared to discrete state. By investigating effects concentration solvent environment, it's demonstrated that could exhibit dual emission properties, shifting from blue particle emissions red as they aggregate. key this tunable lies hydrogen bonding, drives modulates photo physical properties. These findings reveal through precise aggregation, can be engineered advanced optoelectronic applications, including light-emitting diodes (LEDs), secure information encryption, fingerprint authentication. report not only deepens understanding underlying mechanisms governing CDs' but also introduces a novel approach exploiting unique properties technological innovation.

Язык: Английский

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High‐Performance Organic Ultralong Room Temperature Phosphorescence Based on Biomass Macrocycle

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Фев. 11, 2025

Abstract The pursuit of sustainable, high‐performance organic ultralong room temperature phosphorescence (OURTP) materials with stimulus‐responsive properties presents a significant and enticing yet formidable challenge. Herein, an efficient strategy to confining boric acid‐based compounds into biomass macrocycle γ‐cyclodextrin through multiple interactions is developed, enabling the construction multicolor OURTP doped systems. synergistic effects strong hydrogen bonding, C─O─B covalent cross‐linking, host–guest encapsulation significantly suppress non‐radiative transition, culminating in extraordinary lifetime excellent quantum yield 4.65 s 32.8%, respectively, which are far superior reported RTP materials. Additionally, merging phosphors contributes stimulus responses, overcoming inherent limitations degradation recycling compounds, dynamically modulating signals multiple‐stimulus achieving integration multifunctional dynamic data processing techniques. This work will provide direction for new environmentally friendly potentially commercially available

Язык: Английский

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Engineering Solid‐State Fluorescent Carbon Dots with Aggregation‐Induced Emission by Fatty Amine Chains‐Regulated Charge Transfer and π‐π Stacking

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 16, 2025

Abstract Carbon dots (CDs) are an encouraging green luminescent material; however, the aggregation‐caused quenching (ACQ) effect poses a significant limitation for their use in solid‐state devices. By adjusting precursor fatty amine chains, this paper synthesized four emissive CDs with aggregation‐induced emission (AIE) properties (Lx‐CDs). When water is introduced, generation of Lx‐CDs aggregates creates switching off carbon‐core (blue) acetic acid solution and on surface‐state (orange). Results demonstrate that disulfide bond chain structures allow considerable inhibition distance aromatic skeletons, causing aggregation‐state emission, multiple interactions can reduce non‐radiative processes benefiting AIE. Besides, fast slow fluorescence species be confirmed to correspond paths surface‐state, respectively. The wavelength, photoluminescence quantum yield (PLQY), AIE strength engineered by regulated charge transfer π‐π stacking. This study not only reveals intrinsic mechanism luminescence dynamics but also provides method controlling wavelength enhancing aggregated particles using length.

Язык: Английский

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Multifunctional Thermally Activated Delayed Fluorescence Carbon Dots for Temperature‐Responsive Sensor, Information Encryption, and Organelle Imaging

Advanced Functional Materials, Год журнала: 2024, Номер 34(40)

Опубликована: Июль 10, 2024

Abstract Thermally activated delay fluorescence (TADF) has great potential for information encryption, temperature detection, and bioimaging due to its long‐lived luminescence, temperature‐sensitive high signal‐to‐noise ratio. However, it is still a challenge establish TADF in aqueous environments. In this study, the composite with (M‐FNCDs) prepared using fluorine‐nitrogen co‐doped carbon dots (FNCDs) melamine. It worth mentioning that M‐FNCDs show stable under long‐wavelength excitation (470 nm) Moreover, distinctive temperature‐responsive properties exhibit good linear relationships range of 77–370 K. Simultaneously, suspension as ink utilized realize encryption/decryption their afterglow cannot be quenched an solution. More importantly, biocompatibility can target mitochondria lysosomes living cells, first time achieve ratio low background signal imaging organelles. This work proposes new strategy prepare solutions extend material applications future.

Язык: Английский

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Hydrogen‐Bonded Organic Framework Nanoscintillators for X‐Ray‐Induced Photodynamic Therapy in Hepatocellular Carcinoma

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Янв. 10, 2025

Abstract X‐ray induced photodynamic therapy (X‐PDT) leverages penetrating to generate singlet oxygen ( 1 O 2 ) for treating deep‐seated tumors. However, conventional X‐PDT typically relies on heavy metal inorganic scintillators and organic photosensitizers produce , which presents challenges related toxicity energy conversion efficiency. In this study, highly biocompatible phosphorescent nanoscintillators based hydrogen‐bonded frameworks (HOF) are designed engineered, termed BPT‐HOF@PEG, enhance in hepatocellular carcinoma (HCC) treatment. BPT‐HOF@PEG functions simultaneously as both scintillator photosensitizer, effectively absorbing transferring abundant . Both vitro vivo investigations demonstrate that internalized efficiently produces significant quantities of upon irradiation. Additionally, exposure directly inflicts DNA damage, the synergistic effects these mechanisms result pronounced cell death substantial tumor growth inhibition, with a inhibition rate up 90.4% assessments. RNA sequencing analyses reveal induces apoptosis Hepa1‐6 cells while inhibiting proliferation, culminating death. Therefore, work highlights considerable potential efficient HOF nanoscintillators‐based promising therapeutic approach HCC, providing effective alternative negligible patients unresectable

Язык: Английский

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Aggregated carbon dots endow them with room-temperature phosphorescence in aqueous environments: Mechanisms, properties, and applications

Chemical Engineering Journal, Год журнала: 2024, Номер 495, С. 153653 - 153653

Опубликована: Июль 1, 2024

Язык: Английский

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Multiple confinement-limited activation and defect effect co-triggered the ultra-long lifetime of carbon dots

Chemical Engineering Journal, Год журнала: 2024, Номер unknown, С. 156781 - 156781

Опубликована: Окт. 1, 2024

Язык: Английский

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Highly Bright Pure Room Temperature Phosphorescence for Circularly Polarized Organic Hyperafterglow

Advanced Materials, Год журнала: 2025, Номер unknown

Опубликована: Март 3, 2025

Abstract Pure room‐temperature phosphorescence (pRTP) promises great advantages in both exciton utilization and lifetime manipulation over existing organic luminophores for a variety of emerging applications, but the low brightness, efficiency, color purity constrain afterglow luminescence significantly. Here, promising approach to design highly bright, efficient, narrowband pRTP with long‐lifetime hyperafterglow is proposed by isolating conjugated energy donor circularly polarized (CP) acceptor multi‐resonance effect into rigid host. It shown that aggregation chiral P‐containing binaphthyl promotes generation CP‐pRTP high brightness up ≈50 cd m −2 , while simultaneous transfer chirality afford multi‐color photoluminescence efficiency ≈90%, full‐width at half maxima 31–39 nm, 120–770 ms, luminescent dissymmetry ≈10 −3 . Also, excellent stability capable resisting quenching effects oxygen, solvents, aqueous solutions strong acids bases are observed. With these advantages, applications information encryption, grayscale imaging, 3D high‐resolution models realized, promoting significantly fundamental understandings on modulation construction high‐performance materials advanced photophysical properties applications.

Язык: Английский

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Enhancing plant photosynthesis with dual light conversion films incorporating biomass-derived carbon dots

Carbon Capture Science & Technology, Год журнала: 2024, Номер 13, С. 100253 - 100253

Опубликована: Июль 26, 2024

Enhancing photosynthesis is a pivotal strategy for achieving sustainable plant production. Blue and red light facilitate growth since these wavelengths are readily absorbed by chlorophyll pigments power crucial photosynthetic processes. In this investigation, double conversion films were prepared incorporating biomass-derived carbon dots into polyvinyl alcohol matrix (CDs@PVAs). The study conclusively demonstrated that CDs@PVAs can convert ultraviolet green from sunlight blue light. Using 2-week-old Athaliana plants as the model organism, covered with then exposed to simulated (0.57 mW cm−2) 1 hour. Fv/Fm value in presence of was approximately 12% higher than without film, indicating significant boost photosynthesis. Analysis gene expression showed cause upregulation genes associated These thus emerge promising contenders eco-friendly cultivation methods circumvent reliance on electric power. Their potential applications agriculture substantial, underscoring their significance promoting practices.

Язык: Английский

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