Three Minute Ultrarapid Microwave-Assisted Synthesis of Bright Fluorescent Graphene Quantum Dots for Live Cell Staining and White LEDs

2018 ◽  
Vol 1 (4) ◽  
pp. 1623-1630 ◽  
Author(s):  
Weitao Li ◽  
Ming Li ◽  
Yijian Liu ◽  
Dengyu Pan ◽  
Zhen Li ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Live Cell ◽  
Microwave Assisted Synthesis ◽  
White Leds ◽  
Microwave Assisted ◽  
Cell Staining

scholarly journals Ultrafast ammonia-driven, microwave-assisted synthesis of nitrogen-doped graphene quantum dots and their optical properties

Nanophotonics ◽  
2017 ◽  
Vol 6 (1) ◽  
pp. 259-267 ◽  
Author(s):  
Binjie Zheng ◽  
Yuanfu Chen ◽  
Pingjian Li ◽  
Zegao Wang ◽  
Bingqiang Cao ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Graphene Quantum Dots ◽  
Microwave Assisted Synthesis ◽  
Scale Production ◽  
Excitation Spectra ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

AbstractFor the first time, a facile, ultrafast, ammonia-driven microwave-assisted synthesis of high-quality nitrogen-doped graphene quantum dots (NGQDs) at room temperature and atmospheric pressure is presented. This one-step method is very cheap, environment friendly, and suitable for large-scale production. The as-synthesized NGQDs consisting of one to three graphene monolayers exhibit highly crystalline quality with an average size of 5.3 nm. A new fluorescence (FL) emission peak at 390 nm is observed, which might be attributed to the doped nitrogen atoms into the GQDs. An interesting red-shift is observed by comparing the FL excitation spectra to the UV-visible absorption spectra. Based on the optical properties, the detailed Jablonski diagram representing the energy level structure of NGQDs is derived.

Transforming glucose into fluorescent graphene quantum dots via microwave radiation for sensitive detection of Al3+ ions based on aggregation-induced enhanced emission

The Analyst ◽  
2020 ◽  
Vol 145 (21) ◽  
pp. 6981-6986 ◽  
Author(s):  
Maomao Yao ◽  
Jinkun Huang ◽  
Zihao Deng ◽  
Wenying Jin ◽  
Yali Yuan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Microwave Radiation ◽  
Fluorescence Detection ◽  
Graphene Quantum Dots ◽  
Sensitive Detection ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted

This work initially describes the microwave-assisted synthesis of graphene quantum dots (GQDs) for fluorescence detection of Al3+ ions based on the analyte-mediated aggregation of GQDs leading to aggregation-induced enhanced emission (AIEE).

Rapid microwave-assisted synthesis of ultra-bright fluorescent carbon dots for live cell staining, cell-specific targeting and in vivo imaging

2015 ◽  
Vol 3 (24) ◽  
pp. 4786-4789 ◽  
Author(s):  
Hua He ◽  
Xiaojuan Wang ◽  
Zhenzhen Feng ◽  
Tiantian Cheng ◽  
Xing Sun ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Live Cell ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Specific Targeting ◽  
Cell Staining ◽  
Bio Imaging ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Ultra-bright fluorescent carbon dots were rapidly synthesized for multifunctional bio-imaging including live cell staining, cell-specific targeting and in vivo imaging.

scholarly journals Engineered N-doped graphene quantum dots/CoFe2O4 spherical composites as a robust and retrievable catalyst: fabrication, characterization, and catalytic performance investigation in microwave-assisted synthesis of quinoline-3-carbonitrile derivatives

RSC Advances ◽  
2021 ◽  
Vol 11 (55) ◽  
pp. 34724-34734
Author(s):  
Pouria Babaei ◽  
Javad Safaei-Ghomi
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Catalytic Performance ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted ◽  
Doped Graphene

Sustainable fabrication of spherical N-GQDs/CoFe2O4 nanocomposites as a novel magnetically retrievable catalyst for the synthesis of quinoline-3-carbonitrile derivatives has been developed.

Microwave-Assisted Synthesis of Nitrogen-Doped Multi-Layer Graphene Quantum Dots with Oxygen-Rich Functional Groups

2016 ◽  
Vol 69 (3) ◽  
pp. 357 ◽  
Author(s):  
Xiaobei Hou ◽  
Yibing Li ◽  
Chuan Zhao
Keyword(s):  
Quantum Dots ◽  
Functional Groups ◽  
Graphene Quantum Dots ◽  
Atomic Ratio ◽  
Microwave Assisted Synthesis ◽  
Graphene Layers ◽  
Nitrogen Doped ◽  
Microwave Assisted ◽  
Layer Graphene ◽  
Potential Applications

Strong green-luminescent nitrogen-doped multi-layer graphene quantum dots (N-GQDs) have been prepared via a microwave-assisted hydrothermal method using glucose and urea as the starting materials. The fabricated N-GQDs show a highly crystalline structure and consist of ~3–10 graphene layers with an N/C atomic ratio 5.7 %. The wavelength-dependent luminescence emission behaviour is observed with a photoluminescence quantum yield of 5.2 %. The combination of the unique optical properties introduced by nitrogen doping with the high solubility in aqueous medium offered by the surface oxygen-rich functional groups in N-GQDs provides additional advantages for their potential applications in biolabelling and bioimaging.

scholarly journals Microwave-Assisted Preparation of Luminescent Inorganic Materials: A Fast Route to Light Conversion and Storage Phosphors

Molecules ◽  
2021 ◽  
Vol 26 (10) ◽  
pp. 2882
Author(s):  
José Miranda de Carvalho ◽  
Cássio Cardoso Santos Pedroso ◽  
Matheus Salgado de Nichile Saula ◽  
Maria Claudia França Cunha Felinto ◽  
Hermi Felinto de Brito
Keyword(s):  
Rapid Heating ◽  
Inorganic Materials ◽  
Rapid Screening ◽  
Conventional Heating ◽  
Quantum Yields ◽  
Microwave Assisted Synthesis ◽  
Volumetric Heating ◽  
White Leds ◽  
Microwave Assisted ◽  
And Storage

Luminescent inorganic materials are used in several technological applications such as light-emitting displays, white LEDs for illumination, bioimaging, and photodynamic therapy. Usually, inorganic phosphors (e.g., complex oxides, silicates) need high temperatures and, in some cases, specific atmospheres to be formed or to obtain a homogeneous composition. Low ionic diffusion and high melting points of the precursors lead to long processing times in these solid-state syntheses with a cost in energy consumption when conventional heating methods are applied. Microwave-assisted synthesis relies on selective, volumetric heating attributed to the electromagnetic radiation interaction with the matter. The microwave heating allows for rapid heating rates and small temperature gradients yielding homogeneous, well-formed materials swiftly. Luminescent inorganic materials can benefit significantly from the microwave-assisted synthesis for high homogeneity, diverse morphology, and rapid screening of different compositions. The rapid screening allows for fast material investigation, whereas the benefits of enhanced homogeneity include improvement in the optical properties such as quantum yields and storage capacity.

Rapid Microwave-Assisted Synthesis of SnO2 Quantum Dots for Efficient Planar Perovskite Solar Cells

2021 ◽  
Vol 4 (2) ◽  
pp. 1887-1893
Author(s):  
Zhengjie Xu ◽  
Yue Jiang ◽  
Zhuoxi Li ◽  
Cong Chen ◽  
Xiangyu Kong ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
Microwave Assisted Synthesis ◽  
Microwave Assisted
Sign in / Sign up

Export Citation Format

Share Document