Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2024, Volume and Issue: 327, P. 125346 - 125346
Published: Oct. 28, 2024
Language: Английский
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 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.
Language: Английский
Citations
20
Biosensors, Journal Year: 2025, Volume and Issue: 15(2), P. 99 - 99
Published: Feb. 10, 2025
Carbon quantum dots (CQDs), a new class of carbon-based nanomaterials, have emerged as nano-scaled probes with photoluminescence that an eco-friendly and bio-compatible nature. Their cost-efficient synthesis high yields make them indispensable due to their application in opto-electronic devices, including biosensors, bioimaging, environmental monitoring, light sources. This review provides intrinsic properties CQDs such excitation-dependent emission, biocompatibility, quenching properties. Diverse strategies for easy are divided into bottom-up top-down approaches detailed herein. In particular, we highlight luminescence properties, mechanisms could even be utilized the precise rapid detection biomolecules. We also discuss methodologies mitigation fluorescence quenching, which is pivotal biosensors bioimaging.
Language: Английский
Citations
1
Dyes and Pigments, Journal Year: 2025, Volume and Issue: unknown, P. 112657 - 112657
Published: Jan. 1, 2025
Language: Английский
Citations
0
Small Structures, Journal Year: 2025, Volume and Issue: 6(3)
Published: March 1, 2025
The mechanism of the molecular photoluminescence carbon dots (CDs) has gained much attention recently, due to several reports formation small fluorophore species at reaction conditions applied in CD synthesis. In this work, two novel green‐emitting are discovered postsynthetic mixtures citric acid (CA)–urea CDs and identified as 3‐(4‐hydroxy‐1,3,6‐trioxo‐5 H ‐pyrrolo[3,4‐ c ]pyridine‐7‐yl)‐2,6‐dioxo‐piperidine‐4‐carboxyamide (HTPPC) 7‐[(2,5‐dioxopyrrolidin‐3‐yl)methyl]‐4‐hydroxy‐5 ]pyridine‐1,3,6‐trione (DMHPPT). less‐considered covalent character interactions between fluorophores structure is revealed during first steps frequently studied CA–urea CDs. Thus, specific sites HPPT (4‐hydroxy‐1 ]pyridine‐1,3,6(2 ,5 )‐trione), involved bonds with CDs, identified; origin reactive synthesis mixture revealed; spectroscopic consequences binding demonstrated using steady‐state time‐resolved spectroscopy methods accompanied by quantum chemical modeling. hypothesis suggesting expense validated experimentally. nature bonding involving a double bond functionalities successfully expanded citrazinic fluorophores, that similar can be present other dot systems.
Language: Английский
Citations
0
ACS Sustainable Resource Management, Journal Year: 2025, Volume and Issue: unknown
Published: May 15, 2025
Language: Английский
Citations
0
Spectrochimica Acta Part A Molecular and Biomolecular Spectroscopy, Journal Year: 2024, Volume and Issue: 327, P. 125346 - 125346
Published: Oct. 28, 2024
Language: Английский
Citations
1