Dimeric Lipids Enable Ph-Switchable Supramolecular Tuning in Surface-Engineered Quantum Dots

Опубликована: Янв. 1, 2025

Язык: Английский

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Piperidine and isobutyl-nitrite fuels for the combustion synthesis of nanomaterials: A study of crystal structure, microstructure, thermodynamics, and optical properties

Journal of Molecular Structure, Год журнала: 2024, Номер 1312, С. 138583 - 138583

Опубликована: Май 10, 2024

Язык: Английский

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Dual Doping with Nitrogen and Rare Earth Metals for Tailored Photoluminescence and Antimicrobial Properties in Hydrothermally Synthesized Carbon Dots

Surfaces and Interfaces, Год журнала: 2025, Номер unknown, С. 105752 - 105752

Опубликована: Янв. 1, 2025

Язык: Английский

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Preparation of Multicolor Room-Temperature Phosphorescence Carbon Dots by Changing the Conjugation Degree of Precursors for Information Encryption

ACS Applied Materials & Interfaces, Год журнала: 2025, Номер 17(9), С. 14425 - 14432

Опубликована: Фев. 20, 2025

Room temperature phosphorescence (RTP) materials have attracted considerable attention, because of their outstanding properties and a wide array potential applications. However, achieving control over the emission color RTP still presents certain challenges. In this article, carbon dots (CDs) three distinct colors were synthesized through simple host-guest doping strategy. Blue CDs (B-CDs) obtained by using phenylboronic acid as guest phosphors B2O3 host protect matrix, an ultralong lifetime (up to 1.597 s). Under 254 nm light excitation, blue for 14 s B-CDs can be visually observed. By increasing conjugation degree precursor molecules introducing 4-(1-naphthyl) naphthalene-1-boronic pyren-1-ylboronic phosphors, green (G-CDs) red (R-CDs) obtained, respectively. Theoretical calculations band gap analyses suggest that larger conjugated structures reduce HOMO-LUMO energy level difference, thereby causing redshift in wavelength. Last, these multicolor composite applied information encryption.

Язык: Английский

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Ultra-stable and colorful persistent organic phosphorescence of host-guest composites under solution, UV irradiation, and high temperature

Microchemical Journal, Год журнала: 2025, Номер unknown, С. 113505 - 113505

Опубликована: Апрель 1, 2025

Язык: Английский

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Aqueous/Chemical‐Resistant Organic Room Temperature Phosphorescence Materials From Siloxane Network Reinforcement

Advanced Optical Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 28, 2025

Abstract Organic room‐temperature phosphorescent(RTP) materials typically exhibit superior luminescent properties, yet their instability, particularly in aqueous environments where phosphorescence is quenched, and under acidic, alkaline, or organic solvent conditions, restricts application. Herein, a novel convenient strategy designed for constructing host–guest RTP by incorporating silane into urea‐derived products to form siloxane network‐strengthened stable host matrix. The possesses excellent chemical stability can be combined with the thermolytic of urea through covalent bonds, enhancing resistance host. connects guest molecules bonds hydrogen restricting non‐radiative loss, phosphorescent emission, protecting from quenching multiple environments. material, prepared using (3‐aminopropyl) triethoxysilane, urea, 2‐aminoterephthalic acid, exhibits blue lifetime 891 ms, visible naked eye 21 s. Notably, it maintains emission water, solvents, strong acid/alkali solutions while demonstrating stability, as evidenced its potential applications afterglow displays information encryption. This provides valuable insights designing broadens application complex

Язык: Английский

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Highly photoluminescent carbon dots: a multifunctional platform for pH sensing, nano thermometry, and mercury(ii) detection

Materials Advances, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Carbon dots (CDs), a class of heavy-metal-free fluorescent nanomaterials, have attracted significant attention due to their excellent optical properties, chemical stability, low toxicity, and biocompatibility.

Язык: Английский

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Regulation of molecular conjugation to realize mult-color room temperature phosphorescence of carbon dots in urea and ammonium pentaborate precursor matrices

Materials Today Chemistry, Год журнала: 2024, Номер 40, С. 102199 - 102199

Опубликована: Июль 16, 2024

Язык: Английский

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Achieving Seconds‐to‐Hours Duration‐Tunable Organic Long Persistent Luminescence from Carbon Dots‐Based Exciplex Systems by Energy Gaps Regulation^†

Chinese Journal of Chemistry, Год журнала: 2024, Номер 42(12), С. 1407 - 1417

Опубликована: Март 13, 2024

Comprehensive Summary Duration‐tunable afterglow materials have garnered considerable attention in various applications. Herein, carbon dots (CDs)‐based long persistent luminescence (LPL) composites with a tunable duration an ultrawide range of seconds‐to‐hours levels were designed and prepared for the first time. In contrast to established CD‐based materials, we reported that exhibit LPL form exciplexes long‐lived charge‐separated states, enabling be prolonged from several seconds over one hour, exceeding typical regulation (limited 1 min). Further studies revealed relationship between excited charge‐transfer states CDs plays pivotal role activating regulating its duration. Furthermore, these exhibited high photoluminescence (PL) quantum yields up 60.63%, their was robust under ambient conditions, even aqueous media. Their superior performance endows strong competitive advantage dynamic display systems, such as tags time‐resolved data encryption displays remaining time takeaways. This study offers approach preparing CDs‐based durations may provide new insights development rare‐earth‐free materials.

Язык: Английский

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Rapid Realization of Multicolor Room Temperature Phosphorescence of Carbon Dot-Based Composites on Natural Polymer Matrix Platforms

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(7), С. 7720 - 7730

Опубликована: Апрель 1, 2024

Multicolor room temperature phosphorescence (RTP) carbon dots (CDs) have great application potential in the field of information security encryption, but rapidly realizing multicolor RTP (including long-wavelength RTP) based on natural polymer matrices still has certain challenges. In this work, we reported for first time that CD-based composites were composed two kinds CDs with different fluorescence (blue and red) synthesized by a microwave solid-phase reaction method matrixes, carboxymethyl starch sodium (CMSNa) chitosan (CMCS), achieved red, orange, yellow, green emission lifetimes 314, 264, 311, 312 ms, respectively. preparation process, synthesis CMSNa CMCS matrixes are very simple fast. particular, matrix materials can be completed within 5 min. A series characterizations analyses show formation strong hydrogen bond networks strengths promotes CDs. The fluorescent four composite security.

Язык: Английский

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