Excitation dependence and independence of photoluminescence in carbon dots and graphene quantum dots: insights into the mechanism of emission

Nanoscale ◽  
2021 ◽  
Author(s):  
Abu Bakar Siddique ◽  
Syed Minhaz Hossain ◽  
Ashit Kumar Pramanick ◽  
Mallar Ray
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Carbon Nanostructures ◽  
Graphene Quantum Dots ◽  
Emission Characteristics ◽  
Emission Mechanism ◽  
Insight Into

A pattern in excitation dependent and independent emission characteristics provides important insight into the emission mechanism from 0D carbon nanostructures.  

scholarly journals Graphene: Insight into the Cellular Internalization and Cytotoxicity of Graphene Quantum Dots (Adv. Healthcare Mater. 12/2013)

2013 ◽  
Vol 2 (12) ◽  
pp. 1612-1612 ◽  
Author(s):  
Congyu Wu ◽  
Chong Wang ◽  
Ting Han ◽  
Xuejiao Zhou ◽  
Shouwu Guo ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Cellular Internalization ◽  
Insight Into

New insight into electrooxidation of graphene into graphene quantum dots

2017 ◽  
Vol 690 ◽  
pp. 129-132 ◽  
Author(s):  
Peihui Luo ◽  
Xiangfeng Guan ◽  
Yunlong Yu ◽  
Xiaoyan Li
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Insight Into

scholarly journals Facile synthesis of preformed mixed nano-carbon structure from low rank coal

2018 ◽  
Vol 36 (1) ◽  
pp. 14-20 ◽  
Author(s):  
B. Manoj ◽  
Ashlin M. Raj ◽  
George Thomas Chirayil
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Bituminous Coal ◽  
Graphene Quantum Dots ◽  
Energy Resource ◽  
Low Rank ◽  
Tem Analysis ◽  
Graphene Layers ◽  
Simple Chemical ◽  
Nano Carbon

Abstract Coal is a natural energy resource which is mainly used for energy production via combustion. Coal has nanocrystals embedded in it, formed during the coalification process, and is an ideal precursor for nano-carbon dots and diamonds. Herein, we report a facile top-down method to synthesise nanodots and diamonds of the size of 5 nm to 10 nm from three different types of coal by simple chemical leaching. TEM analysis revealed the formation of a mixture of carbon dots, graphene layers, and quantum dots in bituminous coal and sub-bituminous coal. Raman analysis confirmed the existence of synthesized nanodiamond and nano-carbon mixed phase with defects associated with it. It is concluded that graphene quantum dots, nanodiamonds, graphene sheets and carbon dots present in coal can be extracted by simple chemical treatment. These structures can be tuned to photoluminescent material for various optoelectronic applications or energy harvesting devices like super capacitors.

Insight into the charge transport correlation in Aux clusters and graphene quantum dots deposited on TiO2 nanotubes for photoelectrochemical oxygen evolution

2018 ◽  
Vol 6 (24) ◽  
pp. 11154-11162 ◽  
Author(s):  
Zhiping Zeng ◽  
Yu-Bing Li ◽  
Shufen Chen ◽  
Peng Chen ◽  
Fang-Xing Xiao
Keyword(s):  
Quantum Dots ◽  
Charge Transport ◽  
Water Splitting ◽  
Oxygen Evolution ◽  
Tio2 Nanotubes ◽  
Graphene Quantum Dots ◽  
Gold Nanoclusters ◽  
Intrinsic Correlation ◽  
Induced Charge ◽  
Insight Into

The intrinsic correlation of gold nanoclusters with graphene quantum dots in terms of photo-induced charge transport for photoelectrochemical water splitting was revealed.

Double-emission mechanism of laser-induced HOPG-exfoliated Graphene Quantum Dots (GQDs)

2019 ◽  
Vol 114 (2) ◽  
pp. 022102 ◽  
Author(s):  
Miao An ◽  
Junxiao Wu ◽  
Peijie Wang ◽  
Yan Fang
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Emission Mechanism ◽  
Exfoliated Graphene

Chemically doped fluorescent carbon and graphene quantum dots for bioimaging, sensor, catalytic and photoelectronic applications

Nanoscale ◽  
2016 ◽  
Vol 8 (5) ◽  
pp. 2532-2543 ◽  
Author(s):  
Yan Du ◽  
Shaojun Guo
Keyword(s):  
Quantum Dots ◽  
Carbon Dots ◽  
Graphene Quantum Dots ◽  
Chemical Doping ◽  
Fluorescent Carbon Dots ◽  
Fluorescent Carbon

Chemical doping for fluorescent carbon dots endows acceptable properties for diverse applications.

Ratiometric fluorescence response of a dual light emitting reduced carbon dot/graphene quantum dot nanohybrid towards As(iii)

2019 ◽  
Vol 7 (33) ◽  
pp. 10309-10317 ◽  
Author(s):  
Satyabrat Gogoi ◽  
Rashmita Devi ◽  
Hemant Sankar Dutta ◽  
Manobjyoti Bordoloi ◽  
Raju Khan
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Carbon Dots ◽  
Fluorescence Probe ◽  
Graphene Quantum Dots ◽  
Ratiometric Fluorescence ◽  
Carbon Dot ◽  
Light Emitting ◽  
Graphene Quantum Dot ◽  
Fluorescence Response

A dual light emitting fully carbon-based nanohybrid system comprising of glutathione-functionalized reduced carbon dots and graphene quantum dots is fabricated as ratiometric fluorescence probe for As(iii).

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