pH-Dependent photoluminescence “switch-on” nanosensors composed of silver nanoparticles and nitrogen and sulphur co-doped carbon dots for discriminative detection of biothiols

The Analyst ◽  
2019 ◽  
Vol 144 (23) ◽  
pp. 7057-7063 ◽  
Author(s):  
Feng Xiang ◽  
Jizhou Li ◽  
Zhongde Liu
Keyword(s):  
Silver Nanoparticles ◽  
Energy Transfer ◽  
Surface Energy ◽  
Carbon Dots ◽  
Surface Energy Transfer ◽  
Ph Dependent ◽  
Doped Carbon Dots ◽  
Co Doped

A nanomaterial surface energy transfer (NSET) system composed of silver nanoparticles (AgNPs) and nitrogen and sulphur co-doped carbon dots (N,S-CDs) was established to discriminate biothiols, featuring the pH-promoted distinct PL “switch-on” response.

Surfactant-Induced Modulation of Nanometal Surface Energy Transfer from Silicon Quantum Dots to Silver Nanoparticles

2015 ◽  
Vol 119 (23) ◽  
pp. 13325-13334 ◽  
Author(s):  
Roopali Prajapati ◽  
Surajit Chatterjee ◽  
Arpan Bhattacharya ◽  
Tushar Kanti Mukherjee
Keyword(s):  
Quantum Dots ◽  
Silver Nanoparticles ◽  
Energy Transfer ◽  
Surface Energy ◽  
Silicon Quantum Dots ◽  
Surface Energy Transfer

Resonant excitation energy transfer from carbon dots to different sized silver nanoparticles

2016 ◽  
Vol 18 (41) ◽  
pp. 28911-28918 ◽  
Author(s):  
Roopali Prajapati ◽  
Arpan Bhattacharya ◽  
Tushar Kanti Mukherjee
Keyword(s):  
Silver Nanoparticles ◽  
Energy Transfer ◽  
Surface Energy ◽  
Excitation Energy ◽  
Carbon Dots ◽  
Excitation Energy Transfer ◽  
Photoluminescence Spectroscopy ◽  
Resonant Excitation ◽  
Ag Nps ◽  
Size Dependent

In the present study we have demonstrated the size-dependent resonant nanometal surface energy transfer (NSET) from carbon dots (CDs) to silver nanoparticles (Ag NPs) using photoluminescence spectroscopy.

Photo-responsive camptothecin-based polymeric prodrug coated silver nanoparticles for drug release behaviour tracking via the nanomaterial surface energy transfer (NSET) effect

2018 ◽  
Vol 6 (11) ◽  
pp. 1678-1687 ◽  
Author(s):  
Jiao-Yang Li ◽  
Liang Qiu ◽  
Xiao-Fei Xu ◽  
Cai-Yuan Pan ◽  
Chun-Yan Hong ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Silver Nanoparticles ◽  
Energy Transfer ◽  
Drug Release ◽  
Surface Energy ◽  
Drug Delivery System ◽  
Delivery System ◽  
Surface Energy Transfer ◽  
Polymeric Prodrug

A photo-responsive hybrid drug delivery system for drug release behaviour tracking via the nanomaterial surface energy transfer (NSET) effect.

Nitrogen and Sulfur Co-doped Fluorescent Carbon Dots for the Detection of Morin and Cell Imaging

2018 ◽  
Vol 15 (1) ◽  
pp. 47-55
Author(s):  
Xuebing Li ◽  
Haifen Yang ◽  
Ning Wang ◽  
Tijian Sun ◽  
Wei Bian ◽  
...  
Keyword(s):  
Microwave Heating ◽  
Fluorescent Probe ◽  
Fluorescence Intensity ◽  
Carbon Dots ◽  
Cell Imaging ◽  
Water Soluble ◽  
Heating Process ◽  
X Ray ◽  
Doped Carbon Dots ◽  
Co Doped

Background: Morin has many pharmacological functions including antioxidant, anticancer, anti-inflammatory, and antibacterial effects. It is commonly used in the treatment of antiviral infection, gastropathy, coronary heart disease and hepatitis B in clinic. However, researches have shown that morin is likely to show prooxidative effects on the cells when the amount of treatment is at high dose, leading to the decrease of intracellular ATP levels and the increase of necrosis process. Therefore, it is necessary to determine the concentration of morin in biologic samples. Method: Novel water-soluble and green nitrogen and sulfur co-doped carbon dots (NSCDs) were prepared by a microwave heating process with citric acid and L-cysteine. The fluorescence spectra were collected at an excitation wavelength of 350 nm when solutions of NSCDs were mixed with various concentrations of morin. Results: The as-prepared NSCDs were characterized by transmission electron microscopy, X-ray diffraction and X-ray photoelectron spectroscopy. The fluorescence intensity of NSCDs decreased significantly with the increase of morin concentration. The fluorescence intensity of NSCDs displayed a linear response to morin in the concentration 0.10-30 μM with a low detection limit of 56 nM. The proposed fluorescent probe was applied to analysis of morin in human body fluids with recoveries of 98.0-102%. Conclusion: NSCDs were prepared by a microwave heating process. The present analytical method is sensitive to morin. The quenching process between NSCDs and morin is attributed to the static quenching. In addition, the cellular toxicity on HeLa cells indicated that the as-prepared NSCDs fluorescent probe does not show obvious cytotoxicity in cell imaging. Our proposed method possibly opens up a rapid and nontoxic way for preparing heteroatom doped carbon dots with a broad application prospect.

Multifunctional N,S co-doped carbon dots for sensitive probing of temperature, ferric ion, and methotrexate

2019 ◽  
Vol 411 (8) ◽  
pp. 1647-1657 ◽  
Author(s):  
Pengli Zuo ◽  
Jianhua Liu ◽  
Hongna Guo ◽  
Chenghong Wang ◽  
Hongqian Liu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Ferric Ion ◽  
Doped Carbon Dots ◽  
Co Doped

Tuning Optical Properties of Nitrogen-Doped Carbon Dots Through Fluorescence Resonance Energy Transfer Using Rhodamine B for Ratiometric Sensing of Mercury ion

2021 ◽  
Author(s):  
Alagan Muthurasu ◽  
V GANESH
Keyword(s):  
Optical Properties ◽  
Energy Transfer ◽  
Rhodamine B ◽  
Carbon Dots ◽  
Resonance Energy Transfer ◽  
Resonance Energy ◽  
Nitrogen Doped ◽  
Physical Chemical ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon

Carbon dots (CDs) exhibiting fluorescence property are generally derived from carbonaceous materials and possessing ultra small size with various exciting physical, chemical and photo-properties that have been used in many...

Excitation-dependent multiple luminescence emission of nitrogen and sulfur co-doped carbon dots for cysteine sensing, bioimaging, and photoluminescent ink applications

2021 ◽  
pp. 106280
Author(s):  
Sonaimuthu Mohandoss ◽  
Subramanian Palanisamy ◽  
Veeraraghavan Vishnu Priya ◽  
Surapaneni Krishna Mohan ◽  
Jae-Jin Shim ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Luminescence Emission ◽  
Doped Carbon Dots ◽  
Co Doped
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