Опубликована: Ноя. 14, 2024
Язык: Английский
Chemical Science, Год журнала: 2025, Номер unknown
Опубликована: Янв. 1, 2025
Fluorescent nitrogen-doped carbon dots (N-GQDs) with long-wavelength emission properties are of increased interest for technological applications. They widely synthesized through the solvothermal treatment graphene oxide (GO) using N,N-dimethylformamide (DMF) as a cleaving and doping agent. However, this process simultaneously generates undesired interfering blue-emissive by-products. In study, we present straightforward method synthesizing N-GQDs exclusively exhibiting green fluorescence. The key innovation lies in addition hydrogen peroxide (H2O2) to DMF-driven one-pot cleavage process. Systematically controlling reaction conditions, elucidate threefold beneficial role H2O2: first, it acts radical source facilitating degradation DMF generation nitrogen-containing radicals, essential N-GQD formation; second, prevents thermal reduction GO, thus ensuring persistent pathways DMF-derived radicals; third, suppresses self-reaction thereby avoiding formation blue-fluorescent Our findings on mechanism advantageous H2O2 open new possibilities rational design genuinely emitting at long wavelengths.
Язык: Английский
Процитировано
1
Advanced Healthcare Materials, Год журнала: 2024, Номер 13(29)
Опубликована: Июль 22, 2024
Reactive oxygen species (ROS), as metabolic byproducts, play pivotal role in physiological and pathological processes. Recently, studies on the regulation of ROS levels for disease treatments have attracted extensive attention, mainly involving ROS-induced toxicity therapy mediated by producers antioxidant scavengers. Nanotechnology advancements led to development numerous nanomaterials with ROS-modulating capabilities, among which carbon dots (CDs) standing out noteworthy nanomedicines own their distinctive physicochemical properties, high stability, excellent biocompatibility. Despite progress treating ROS-related diseases based CDs, critical issues such rational design principles remain underexplored. The primary cause these may stem from intricate amalgamation core structure, defects, surface states, inherent poses challenges establishing a consistent generalization. This review succinctly summarizes recently ROS-modulated approaches using CDs treatment. Specifically, it investigates established therapeutic strategies CDs-regulated ROS, emphasizing interplay between intrinsic structure generation or scavenging ability. conclusion raises several unresolved key scientific prominent technological bottlenecks, explores future perspectives comprehensive CDs-based therapy.
Язык: Английский
Процитировано
7
ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(32), С. 42632 - 42640
Опубликована: Июль 31, 2024
Photoactivation is a phenomenon that could enhance the photoluminescence (PL) and photostability upon UV/vis light exposure, which usually observed in CdSe/ZnS quantum dots (QDs). However, photoactivation has been scarcely reported fluorescent carbon (CQDs). Herein, nitrogen-doped (N-CQDs) were prepared through facile solvothermal approach with naphthalenetracarboxylic dianhydride serine as precursors. Upon simple UV irradiation for 10 min, fluorescence yield (QY) of N-CQDs increase up to 10-fold. Based on this phenomenon, explored an ultraviolet (UV) sensor assess intensity radiation sunlight indirectly evaluate UV-blocking efficiency various sunscreen products. Thus, contribution not only provided insight into developing low-cost detector but also opened door development converse-photobleaching properties.
Язык: Английский
Процитировано
6
Microchimica Acta, Год журнала: 2024, Номер 191(11)
Опубликована: Окт. 21, 2024
Язык: Английский
Процитировано
6
Chinese Chemical Letters, Год журнала: 2024, Номер unknown, С. 110618 - 110618
Опубликована: Ноя. 1, 2024
Язык: Английский
Процитировано
6
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Опубликована: Янв. 1, 2025
Язык: Английский
Процитировано
0
Microchemical Journal, Год журнала: 2025, Номер unknown, С. 113624 - 113624
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
Talanta, Год журнала: 2025, Номер unknown, С. 128249 - 128249
Опубликована: Апрель 1, 2025
Язык: Английский
Процитировано
0
ACS Biomaterials Science & Engineering, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 5, 2024
Size-dependent optical and electronic properties are unique characteristics of quantum dots (QDs). A significant advantage is the confinement effect that allows their precise tuning to achieve required behavior for targeted applications. Regarding aforementioned factors, QDs-based sensors have exhibited dramatic potential diverse advanced For example, devices been potentially utilized bioimaging, drug delivery, cancer therapy, environmental remediation. In recent years, use electrochemical further extended in other areas like gas sensing, metal ion detection, monitoring organic pollutants, detection radioactive isotopes. Objective this study rationalize state-of-the-art This review article comprehensively illustrates importance along with sources from which QDs formulated fabricated. Other distinct features associated extremely high active surfaces, inherent ability reproducibility, sensitivity, selectivity analyte detection. review, major categories QD materials justification key roles demonstrated discussed. All evaluated special emphasis on advantages drawbacks/challenges materials. However, interests readers researchers, improvements also included On evaluation, it has concluded despite challenges, exhibit excellent performances
Язык: Английский
Процитировано
3