Applied Surface Science, Journal Year: 2024, Volume and Issue: 674, P. 160946 - 160946
Published: Aug. 10, 2024
Language: Английский
Chemical Engineering Journal, Journal Year: 2024, Volume and Issue: 496, P. 153761 - 153761
Published: July 5, 2024
Language: Английский
Citations
22
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: 34(40)
Published: July 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.
Language: Английский
Citations
9
Nano Letters, Journal Year: 2024, Volume and Issue: 24(42), P. 13307 - 13314
Published: Oct. 10, 2024
Long-wavelength afterglow emitters are crucial for optoelectronics and information security; however, it remains a challenge in achieving high luminescence efficiency due to the lack of effective modulation electronic coupling nonradiative transitions singlet/triplet excitons. Here, we demonstrate an organic-carbon-dot (CD) hybrid system that operates via space-confined energy transfer strategy obtain bright emission centered at 600 nm with near-unity efficiency. Photophysical characterization theoretical calculation confirm efficient can be assigned synergistic effect intermolecular from triplet excitons CDs singlets subluminophores intense restraint decay losses singlet/triplet-state rationally rigidification amination modification. By utilizing precursor engineering, yellow near-infrared 575 680 efficiencies 94.4% 45.9% has been obtained. Lastly, these highly emissive powders enable superior performance lighting security.
Language: Английский
Citations
7
Carbon, Journal Year: 2025, Volume and Issue: 234, P. 119980 - 119980
Published: Jan. 4, 2025
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 162102 - 162102
Published: April 1, 2025
Language: Английский
Citations
0
Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(25), P. 9175 - 9181
Published: Jan. 1, 2024
Achieving a colour-tuneable afterglow by selectively activating different exciton transfer channels in carbon dot–cyanuric acid composite alkali induction.
Language: Английский
Citations
3
Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Nov. 18, 2024
Abstract Luminescent materials with time‐resolved dynamic discoloring afterglow (TDDA) hold significant potential for applications in anti‐counterfeiting and data encryption. However, the afterglows coming from organic systems are usually unidentifiable due to their shorter durations (less than 10 s). Achievement of long‐lasting visually discernible TDDA remains highly desirable but challenging. In this work, duration is successfully extended less s minutes by engineering luminescent centers carbon dots (CDs) introducing deep trap‐states a composite CDs nitrides (CNs) (named Y‐CDs@CN). It confirmed that regulation containing both C═N C═O bonds responsible color changes during yellow green. Moreover, generation trap states found be prolonging level through converting room temperature phosphorescence into long persistent luminescence, thus making entire process being easily recognized naked eyes. Furthermore, Y‐CDs@CN can also excited blue light even using white cell phone. To harness these characteristics, portable multidimensional information encryption primarily investigated.
Language: Английский
Citations
2
Nano Letters, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 20, 2024
Room-temperature phosphorescent (RTP) carbon dots (CDs) demonstrate significant potential applications in the field of information anticounterfeiting due to their excellent optical properties. However, RTP emission CDs remains significantly limited spin-forbidden properties triplet exciton transitions. In this work, an situ nitrogen doping strategy was employed design and construct strong spin–orbit coupling nitrogen-doped with mesoporous silica alumina (N-CDs@MS@Al2O3) composites. Both experimental results theoretical calculations confirmed that formation 1(n, π*) following introduction breaks restriction from 1(π, 3(π, π*), thereby enhancing coupling, which further promotes intersystem crossing leads effective population excitons. The designed N-CDs@MS@Al2O3 benefiting impressive long lifetime 3.18 s demonstrates application prospects multilevel encryption. This work provides a new concept boost CDs.
Language: Английский
Citations
2
Journal of Luminescence, Journal Year: 2024, Volume and Issue: 271, P. 120561 - 120561
Published: March 22, 2024
Language: Английский
Citations
0
Journal of the Optical Society of America B, Journal Year: 2024, Volume and Issue: 41(9), P. 1892 - 1892
Published: July 23, 2024
A highly soluble Au(I) gold precursor is used to produce a nanocomposite material consisting of polystyrene matrix and nanoparticles. Irradiation such with nanosecond laser pulses at the plasmon resonance wavelength leads formation black spots containing luminescent products carbonization. HR TEM analysis Raman spectroscopy confirm disordered carbon. simple model, based on heating nanoparticle temperature more than 2000 K stabilization this by endothermic process carbonization, fits well dependence signal increment fluence.
Language: Английский
Citations
0