Facile Preparation of Highly Luminescent Nitrogen-Doped Carbonaceous Nanospheres and Potential Application in Intracellular Imaging of Quercetin

2018 ◽  
Vol 71 (11) ◽  
pp. 882 ◽  
Author(s):  
Buhong Gao ◽  
Yu Sun ◽  
Yingchun Miao ◽  
Huihua Min ◽  
Li Xu ◽  
...  
Keyword(s):  
Hydrothermal Reaction ◽  
Quantum Yields ◽  
Excitation Wavelength ◽  
Quenching Mechanism ◽  
One Pot ◽  
Intracellular Imaging ◽  
Nitrogen Doped ◽  
N Doping ◽  
Branched Polyethylenimine ◽  
Physical And Chemical

Highly luminescent nitrogen-doped carbonaceous nanospheres (LNCNs) were synthesized by a one-pot hydrothermal reaction of β-cyclodextrin (β-CD) and branched polyethylenimine (BPEI). Both the N-doping and amino-functionalisation of LNCNs were achieved simultaneously. The prepared LNCNs display excellent properties such as high physical and chemical stability, excitation wavelength-independent emission, and high photoluminescence quantum yields. Importantly, the LNCNs exhibit a quenching of photoluminescence in the presence of quercetin (Qc) based on the simple static quenching mechanism, making it possible to quantify concentrations from 0.5 to 80 μg mL−1 with a detection limit of 0.21 μg mL−1. Furthermore, the LNCNs probe was further used for imaging Qc in living cells.

scholarly journals Simple One-Pot Synthesis of Hexagonal ZnO Nanoplates as Anode Material for Lithium-Ion Batteries

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
Haipeng Li ◽  
Yaqiong Wei ◽  
Yan Zhao ◽  
Yongguang Zhang ◽  
Fuxing Yin ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Active Sites ◽  
Hydrothermal Reaction ◽  
Strain Relaxation ◽  
Lithium Ion ◽  
Lithium Ions ◽  
One Pot ◽  
Large Contact Area ◽  
Physical And Chemical ◽  
Microstructure Of The Material

Hexagonal ZnO nanoplates were synthesizedviasimple one-pot hydrothermal reaction of Zn(CH3COO)2and CO(NH2)2. XRD, SEM, and HRTEM were used to investigate the composition and microstructure of the material. Together with the facile strain relaxation during structure and volume change upon cycling, this plate-like structure of ZnO is favorable for physical and chemical interactions with lithium ions because of its large contact area with the electrolyte, providing more active sites and short diffusion distances. The resulting hexagonal ZnO nanoplates electrode exhibited good cyclability and delivered a reversible discharge capacity of 368 mAh g−1after 100 cycles at 0.1 C.

scholarly journals Highly Photoluminescent Nitrogen-Doped Carbon Dots Prepared by Hydrothermal Decomposition of Piperazine Citrate

2017 ◽  
Author(s):  
Min-Cheol Kim ◽  
Kwang Sik Yu ◽  
Jwa-Jin Kim ◽  
Seung Yun Han ◽  
Nam Seob Lee ◽  
...  
Keyword(s):  
Surface Passivation ◽  
Hydrothermal Reaction ◽  
Doping Agent ◽  
Nitrogen Doped ◽  
Washing Process ◽  
N Doping ◽  
Biological Probe ◽  
Doped Carbon Dots ◽  
Nitrogen Doped Carbon ◽  
By Products

Highly photoluminescent C-Dots are prepared by hydrothermal reaction of citric acid and piperazine as dual reason in both hydrolysis and surface passivation agent along with the N-doping agent. The resulting C-Dots without external passivation showed PL enhancement by electron transfer from C-Dots-donor to piperazine-acceptor with the maximum emission yields of more than 84%. After mixing the prepared C-Dots with the mixture of EtOH and acetone (1:1 vol %), a novel washing process was performed by centrifugation to remove the precursors and by-products. The resulting C-Dots showed much better stability than dialysis. For evaluating the possible application of the C-Dots as a fluorescent biological probe which possess the wide dosing window and multicolor properties. The C-Dots were localized in perinuclear vacuole-like structures with granular pattern in cytoplasm sparing the nucleus. No signs of any morphological deterioration like nuclear shrinkage were observed.

Synthesis of graphene oxide dots for excitation-wavelength independent photoluminescence at high quantum yields

2015 ◽  
Vol 3 (17) ◽  
pp. 4553-4562 ◽  
Author(s):  
Chiao-Yi Teng ◽  
Te-Fu Yeh ◽  
Kuang-I Lin ◽  
Shean-Jen Chen ◽  
Masahiro Yoshimura ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Quantum Yield ◽  
White Light ◽  
Light Emission ◽  
Quantum Yields ◽  
Excitation Wavelength ◽  
Nitrogen Doped ◽  
Violet Light ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Nitrogen-doped graphene oxide dots exhibit excitation-wavelength independent photoluminescence at 530 nm and 50% quantum yield. The dots show excellent white light emission by combining green emissions with violet light used for excitation.

Facile Synthesis of Nitrogen-Doped [(6.)m8]nCyclacene Carbon Nanobelts by a One-Pot Self-Condensation Reaction

2021 ◽  
Vol 143 (7) ◽  
pp. 2716-2721
Author(s):  
Jun Zhu ◽  
Yi Han ◽  
Yong Ni ◽  
Guangwu Li ◽  
Jishan Wu
Keyword(s):  
Condensation Reaction ◽  
Facile Synthesis ◽  
One Pot ◽  
Nitrogen Doped

Nitrogen-doped hollow carbon spheres with a wrinkled surface: their one-pot carbonization synthesis and supercapacitor properties

2016 ◽  
Vol 52 (78) ◽  
pp. 11693-11696 ◽  
Author(s):  
Lei Liu ◽  
Shi-Da Xu ◽  
Qing Yu ◽  
Feng-Yun Wang ◽  
Hui-Ling Zhu ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Core Shell ◽  
Carbon Spheres ◽  
Melamine Formaldehyde ◽  
One Pot ◽  
Nitrogen Doped ◽  
Wrinkled Surface ◽  
Hollow Carbon ◽  
Hollow Carbon Spheres

Nitrogen-doped hollow carbon spheres with a wrinkled surface were synthesized through direct pyrolysis of core–shell structured graphene oxide–resol@melamine formaldehyde composites.

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