Littérature scientifique sur le sujet « Luminescent Carbon Dots »
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Articles de revues sur le sujet "Luminescent Carbon Dots"
Mancini, Federica, Arianna Menichetti, Lorenzo Degli Esposti, Monica Montesi, Silvia Panseri, Giada Bassi, Marco Montalti, Laura Lazzarini, Alessio Adamiano et Michele Iafisco. « Fluorescent Carbon Dots from Food Industry By-Products for Cell Imaging ». Journal of Functional Biomaterials 14, no 2 (7 février 2023) : 90. http://dx.doi.org/10.3390/jfb14020090.
Texte intégralBourlinos, Athanasios B., Radek Zbořil, Jan Petr, Aristides Bakandritsos, Marta Krysmann et Emmanuel P. Giannelis. « Luminescent Surface Quaternized Carbon Dots ». Chemistry of Materials 24, no 1 (23 décembre 2011) : 6–8. http://dx.doi.org/10.1021/cm2026637.
Texte intégralLinehan, Keith, et Hugh Doyle. « Solution reduction synthesis of amine terminated carbon quantum dots ». RSC Adv. 4, no 24 (2014) : 12094–97. http://dx.doi.org/10.1039/c3ra47770c.
Texte intégralSu, Weitao, Yuchan Wang, Weiwei Wu, Haiying Qin, Kaixin Song, Xiwei Huang, Lijie Zhang et Daqin Chen. « Towards full-colour tunable photoluminescence of monolayer MoS2/carbon quantum dot ultra-thin films ». Journal of Materials Chemistry C 5, no 25 (2017) : 6352–58. http://dx.doi.org/10.1039/c7tc01773a.
Texte intégralKargbo, Osman, Yan Jin et Shou-Nian Ding. « Recent Advances in Luminescent Carbon Dots ». Current Analytical Chemistry 11, no 1 (19 décembre 2014) : 4–21. http://dx.doi.org/10.2174/1573411010666141010160217.
Texte intégralda Silva Souza, Débora Rosa, Larissa Durães Caminhas, João Paulo de Mesquita et Fabiano Vargas Pereira. « Luminescent carbon dots obtained from cellulose ». Materials Chemistry and Physics 203 (janvier 2018) : 148–55. http://dx.doi.org/10.1016/j.matchemphys.2017.10.001.
Texte intégralWang, Fu, Zheng Xie, Hao Zhang, Chun-yan Liu et Ying-ge Zhang. « Highly Luminescent Organosilane-Functionalized Carbon Dots ». Advanced Functional Materials 21, no 6 (25 février 2011) : 1027–31. http://dx.doi.org/10.1002/adfm.201002279.
Texte intégralDong, Yongqiang, Jianhua Cai, Xu You et Yuwu Chi. « Sensing applications of luminescent carbon based dots ». Analyst 140, no 22 (2015) : 7468–86. http://dx.doi.org/10.1039/c5an01487e.
Texte intégralHoan, Bui Thi, Phuong Dinh Tam et Vuong-Hung Pham. « Green Synthesis of Highly Luminescent Carbon Quantum Dots from Lemon Juice ». Journal of Nanotechnology 2019 (2 mai 2019) : 1–9. http://dx.doi.org/10.1155/2019/2852816.
Texte intégralStan, Loredana, Irina Volf, Corneliu S. Stan, Cristina Albu, Adina Coroaba, Laura E. Ursu et Marcel Popa. « Intense Blue Photo Emissive Carbon Dots Prepared through Pyrolytic Processing of Ligno-Cellulosic Wastes ». Nanomaterials 13, no 1 (27 décembre 2022) : 131. http://dx.doi.org/10.3390/nano13010131.
Texte intégralThèses sur le sujet "Luminescent Carbon Dots"
Soares, Leonardo dos Reis Leano. « Estudo do comportamento de sinais OSL de BeO e Al2O3:C usando o Modelo OTOR Simplificado e Método dos Mínimos Quadrados ». Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/43/43134/tde-02112018-132426/.
Texte intégralThe dosimetry of alpha, beta and gamma radiation is important in various applied areas, it is used in radiation protection of patients and professionals who are exposed at this kind of radiation. With dosimetric studies, it is possible to better estimate the absorbed dose, and population risks. Thermoluminescence (TL) and Optically Stimulated Luminescence (OSL) techniques are used for these dosimetric applications. Recent studies have shown that some known dosimetric materials as carbon doped aluminum oxide (Al$_2$O$_3$:C) and berilium oxide (BeO) undergo changes in OSL signal behavior related to dose rates and types of radiation. The main objective of this work was to analise the formats of these curves and quantitatively verify whether or not there are changes in OSL signal of the dosimeters irradiated with different types of radiation and dose rates. Under the model of one trap one recombination center (OTOR) the continuous wave OSL (CW-OSL) signals were studied. The OTOR model is the simplest model, but has no analytical solution and the computational solutions are costly by the large number of variables and parameters. In this work, it was necessary to make some simplifications in order to obtain a simple model that could be fitted to the data. The simple-OTOR model shows an exponential decay behavior in the CW-OSL signal description. Another extension approach to the simple-OTOR model was the model with two independent traps and one recombination center, that results in two exponential decays. To obtain the parameters that describe the CW-OSL signal with these models, the least square method (LSM) was used, with parameter refinement by Gauss method. For both the materials the two exponential decay model proved to be superior in quality to the one exponential decay by the analysis of the parameter $\\chi^2$ and the behavior of the residuals. With the fittings, it was possible to verify differences in the behavior of the CW-OSL signal of the samples irradiated in different situations. These differences observed are presented in the decay or initial signal parameters, or in their ratios. Fitted parameters show that OSL signals from Al$_2$O$_3$:C and BeO irradiated with alpha, beta and gamma exhibit significant differences in behavior. The differences verified by the fittings of the CW-OSL signals presented by beta and gamma irradiated dosimeters may in part have been caused by fading effect, which affects in a different way the shapes of the curves and fitted parameters. Gamma irradiation with dose and absorbed dose rate ranges from 22 to 122 mGy and from 0.024 to 1.66Gy/s respectively did not produce significant differences in OSL signals.
Das, Rahul Kumar. « Luminescent Heteroatom doped Carbon Quantum Dots for Sensing and Drug Delivery Applications ». Thesis, 2019. http://ethesis.nitrkl.ac.in/10041/1/2019_PhD_RDas_513CY6080_Luminescent.pdf.
Texte intégralPaikaray, Sonali. « A Simple Hydrothermal Synthesis of Luminescent Carbon Quantum Dots from Different Molecular Precursors ». Thesis, 2013. http://ethesis.nitrkl.ac.in/4627/1/411CY2027.pdf.
Texte intégralJiang, Zh-Cheng, et 姜智程. « Solution-processed, Eco-friendly Carbon Dots for Light-emitting Thin Films and Luminescent Solar Concentrators ». Thesis, 2016. http://ndltd.ncl.edu.tw/handle/45139329502181400760.
Texte intégral中原大學
物理研究所
104
Solution-processed carbon dots (CDs) have attracted much attention owing to their superior materials and photoluminescence (PL) properties, such as abundant precursor materials, less toxicity, high photo-stability and tunable emission. However, their PL properties, including PL quantum yields and photo-stability would be significantly degraded due to concentration-induced solid-state quenching and unstable surface. In this thesis, we fabricated high quality CDs/polyvinyl alcohol (PVA) light-emitting flexible films with submicron structure patterns by a facile and low cost method. PVA is chosen as the host matrix to both disperse and passivate CDs, leading to enhanced internal quantum yields (69%) in the solid states. Patterned CDs/PVA composite can be used to extract the trapped light, thus mitigate the waveguide-mode losses, approximately doubling the external light extraction efficiency. Such CDs/PVA composites also exhibit good photo-stability, and can be used as eco-friendly, low cost phosphors for solid-state lighting. On the other hand, those CDs can also be utilized as eco-friendly luminophores for promising applications in luminescent solar concentrators (LSCs). Such LSCs can be used to concentrate the solar light to enhance the efficiency and reduce the material costs of solar cells. We have fabricated flexible LCSs based on hydrophobic CDs doped PDMS waveguide and characterize their performances using spectroscopic methods. We found that those hydrophobic CDs can be uniformly dispersed into PDMS waveguide and exhibit good photo-stability. The key metric of LSCs, namely, reabsorption losses, has also been investigated using excitation-position-dependent PL spectroscopy. Our demonstration can pave a way to further design efficient LSCs based on eco-friendly CDs in the future.
Chang, Li-Yun, et 張力云. « Investigation of photophysical properties of carbon quantum dots and their application in luminescent solar concentrators ». Thesis, 2018. http://ndltd.ncl.edu.tw/handle/vp7y56.
Texte intégral中原大學
物理研究所
106
Novel solar windows can be realized by integrating conventional solar cells and transparent luminescent solar concentrators (LSCs). Recently, efficient LSCs have been demonstrated based on colloidal quantum dots (CQDs) due to their unique photophysical properties. Unfortunately, most of matured CQDs contain toxic heavy-metal elements and need to be synthesized in the hazardous organic solvent. It would be beneficial to replace conventional heavy-metal CQDs with eco-friendly nano-materials, while preserving unique photophysical properties. Carbon nano-dots (CNDs) are newly emerged luminescent nano-materials that can be simply synthesized using hydrothermal method based on cost-effective, earth-abundant precursors. The main challenge for CNDs utilized in the solid state is concentration-induced self-quenching, thus need to be addressed for the LSC applications. In this thesis, the effect of solid matrices on the photophysical properties of CNDs were investigated, which is necessary for preparing efficient LSCs. We found that the excited-state dynamics can be modified by the solid matrices, thus influencing the PL quantum yields (PL-QYs). In addition, the uniformity of solid-state thin films can be also affected by the solid matrices. We also demonstrated that the CNDs can be uniformly dispersed in a PVA solid matrix and hold high solid-stat PL-QYs up to ~50%. Motivated by such fascinating properties, greener LSCs with a geometric gain of ~ 10 were fabricated based on CNDs/PVA nano-composites, which exhibit internal quantum efficiency of 30% and stable PL emission.
Tsai, Yi-Wen, et 蔡依雯. « Synthesis of heteroatom-doped carbon dots with tunable luminescence properties for bioimaging and free radical scavenging ». Thesis, 2019. http://ndltd.ncl.edu.tw/handle/yg29wt.
Texte intégral國立臺灣科技大學
化學工程系
107
Herein, we combined with nano-synthesis technology and biomedical applications. We present an aqueous based facile microwave-assisted synthesis of carbon quantum dots, which has short synthesis time, low toxicity, water dispersibility and biocompatibility. These advantages are beneficial for biological application. The red, yellow, green and blue fluorescent carbon dots were successfully synthesized by adjusting the heteroatomic doping and changing the purification method. Furthermore, we applied these carbon dots for in vitro antioxidant activity and bioimaging. Part Ⅰ: Antioxidant activity of phosphorous and manganese element co-doped red magnetofluorescent carbon dots P-phenylenediamine was used as carbon precursor. Doping phosphorous (P) heteroatom into Cdots could enhance the quantum yield. Furthermore, doping manganese (Mn) could impart magnetic property to carbon dots. The red fluorescent carbon dots were successfully synthesized by one-pot microwave method. In this study, the application of antioxidant property for PMn@Cdots was carried out by using DPPH, •OH and O2-•, respectively. The result was compared with ascorbic acid and it showed that PMn@Cdots also have good antioxidant property. Furthermore, in the protective activity result of H2O2-induced cell death model, it was found that PMn@Cdots-HA could reduce intracellular ROS levels and protect cells from oxidative stress.
WU, Yao-Hsuan, et 巫耀玄. « Studies of photophysical properties of solid-state carbon nano-dot thin films for greener luminescent solar concentrators ». Thesis, 2018. http://ndltd.ncl.edu.tw/handle/nx66pf.
Texte intégral中原大學
奈米科技碩士學位學程
106
A luminescent solar concentrator (LSC) is consisted of the luminophores and a waveguide that can be used to spatially concentrate both direct and diffused sunlight without the need of complex and expensive solar-tracking and cooling systems. Recently, colloidal quantum dots (CQDs) with some unique photophysical properties have attracted much attention as the luminophores in LSCs. However, most of mature CQDs contain heavy metals and need to be synthesized in the hazardous organic solvent. In addition, they also suffered from concentration-induced quenching (CIQ), thus the loading concentration of luminophores doped in LSCs is restricted. Unfortunately, this would reduce the light-absorbing efficiency, leading to large transmission losses. To address all the issues mentioned previously, organosilane-functionalized carbon nanodots (Si-CNDs) were synthesized based on cost-effective, earth-abundant precursors using a simple hydrothermal method. Such Si-CNDs exhibit some unique photophysical properties, including large absorption coefficient, high PL quantum yields (PL-QYs) and resistance to CIQ effect. Due to good film-forming properties, greener LSCs with different loading concentrations can be simply fabricated by directly cross-linking Si-CNDs on the glass waveguide. The LSCs are highly transparent even under high loading concentration up to 75 wt%, indicating high uniformity of Si-CND distribution. The LSCs with 25 wt% loading contents still possess high solid-state PL-QYs up to ~41% upon the calibration of reabsorption losses and high internal quantum efficiency of ~23% due to low scattering losses. We expect our demonstration can pave a way to further design efficient greener LSCs after further reducing the reabsorption losses.
Chapitres de livres sur le sujet "Luminescent Carbon Dots"
Medeiros Borsagli, Fernanda G. L., et Alessandro Borsagli. « Luminescent Carbon Dots for Environmental Photocatalytic ». Dans Inorganic-Organic Composites for Water and Wastewater Treatment, 201–28. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-5928-7_6.
Texte intégralDutta Choudhury, Sharmistha. « Synthesis, Properties and Applications of Luminescent Carbon Dots ». Dans Handbook on Synthesis Strategies for Advanced Materials, 421–60. Singapore : Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-1892-5_11.
Texte intégralDong, Yongqiang, Jianhua Cai et Yuwu Chi. « Carbon Based Dots and Their Luminescent Properties and Analytical Applications ». Dans Carbon Nanoparticles and Nanostructures, 161–238. Cham : Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-28782-9_6.
Texte intégralYang, Shihe, et Yongfu Qiu. « Carbon Quantum Dot Luminescent Materials ». Dans Materials and Interfaces for Clean Energy, 91–116. New York : Jenny Stanford Publishing, 2021. http://dx.doi.org/10.1201/9781003142232-4.
Texte intégralKumar, Munish. « Synthesis of Carbonaceous Quantum Dots ». Dans Carbonaceous Quantum Dots : Synthesis And Applications, 20–37. BENTHAM SCIENCE PUBLISHERS, 2023. http://dx.doi.org/10.2174/9789815136265123010005.
Texte intégralGavilán, H. « Nanomaterials and their Synthesis for a Sustainable Future ». Dans Materials Research Foundations, 233–310. Materials Research Forum LLC, 2023. http://dx.doi.org/10.21741/9781644902639-8.
Texte intégralActes de conférences sur le sujet "Luminescent Carbon Dots"
Mathew, Sheril Ann, P. Praveena, Y. Sruthi Hubert, V. Narayanan et A. Stephen. « Luminescent carbon dots/chitosan nanocomposite for bioimaging ». Dans DAE SOLID STATE PHYSICS SYMPOSIUM 2018. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5112991.
Texte intégralKumar, S. Ajeesh, et Cyriac Joseph. « High intense blue-violet luminescent carbon dots derived from camphor soot ». Dans PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS : ICAM 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5130267.
Texte intégralRoza, Liszulfah, Permono Adi Putro et Isnaeni. « Ultrasonic-assisted melt blending for polyvinyl alcohol/carbon dots luminescent flexible films ». Dans THE 8TH NATIONAL PHYSICS SEMINAR 2019. AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5132686.
Texte intégralPerez-Guzman, M. A., R. Ortega-Amaya et M. Ortega Lopez. « Advances on synthesis of highly luminescent carbon quantum dots by citric acid carbonization ». Dans 2017 14th International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE). IEEE, 2017. http://dx.doi.org/10.1109/iceee.2017.8108911.
Texte intégralHagiwara, Kenta, et Satoshi Horikoshi. « Rapid Synthesis of highly luminescent Carbon Quantum Dots using Low-Pressurized Microwave Solvothermal Heating ». Dans Ampere 2019. Valencia : Universitat Politècnica de València, 2019. http://dx.doi.org/10.4995/ampere2019.2019.9784.
Texte intégralTyutrin, A. A., R. Wang et E. F. Martynovich. « Fluorescent carbon quantum dots formed from glucose solution by microplasma treatment ». Dans Luminescence and Laser Physics : XVII International Conference on Luminescence and Laser Physics – LLPh 2019. AIP Publishing, 2021. http://dx.doi.org/10.1063/5.0061798.
Texte intégralKapitonov, A. N., M. N. Egorova, A. E. Tomskaya, S. A. Smagulova et A. A. Alekseev. « Hydrothermal synthesis of carbon dots and their luminescence ». Dans 6TH INTERNATIONAL CONFERENCE ON PRODUCTION, ENERGY AND RELIABILITY 2018 : World Engineering Science & Technology Congress (ESTCON). Author(s), 2018. http://dx.doi.org/10.1063/1.5079363.
Texte intégralArabzadeh Nosratabad, Neda, Zhicheng Jin, Liang Du et Hedi Mattoussi. « N-Heterocyclic carbene-stabilized gold nanoparticles and luminescent quantum dots ». Dans Colloidal Nanoparticles for Biomedical Applications XVII, sous la direction de Marek Osiński et Antonios G. Kanaras. SPIE, 2022. http://dx.doi.org/10.1117/12.2610485.
Texte intégralZhang, Xueqiao, Ye Liu, Sanjida Yeasmin, Ahasan Ullah et Li-Jing Cheng. « Red Emissive Carbon Dots with a Large Stokes Shift for Color-Conversion LEDs ». Dans CLEO : Applications and Technology. Washington, D.C. : Optica Publishing Group, 2023. http://dx.doi.org/10.1364/cleo_at.2023.jw2a.69.
Texte intégralOnishi, Bruno Seiki Domingos, Ricardo Bortoletto-Santos, Elias Paiva Ferreira Neto et Sidney José Lima Ribeiro. « Development of hybrid organic-inorganic coating based on carbon dots on bacterial cellulose using sol-gel route ». Dans Latin America Optics and Photonics Conference. Washington, D.C. : Optica Publishing Group, 2022. http://dx.doi.org/10.1364/laop.2022.m3c.5.
Texte intégralRapports d'organisations sur le sujet "Luminescent Carbon Dots"
Ibrayev, Niyazbek, Evgeniya Seliverstova et Gulnur Amanzholova. Plasmon-enhanced luminescence of S,N-doped carbon dots. Peeref, juillet 2023. http://dx.doi.org/10.54985/peeref.2307p7089502.
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