Yellowish and blue luminescent graphene oxide quantum dots prepared via a microwave-assisted hydrothermal route using H2O2 and KMnO4 as oxidizing agents

2018 ◽  
Vol 42 (6) ◽  
pp. 3999-4007 ◽  
Author(s):  
Chechia Hu ◽  
Tzer-Rurng Su ◽  
Tzu-Jen Lin ◽  
Chien-Wei Chang ◽  
Kuo-Lun Tung
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Blue Light ◽  
Light Emission ◽  
Quantum Yields ◽  
Hydrothermal Route ◽  
Blue Light Emission ◽  
Oxidizing Agents ◽  
Microwave Assisted ◽  
Graphene Oxide Quantum Dots

Microwave-assisted hydrothermal synthesized GOQDs exhibit yellowish-green and blue light emission with quantum yields of 15.1% and 8.4%, respectively.

A facile and rapid approach to synthesize uric acid-capped Ti3C2 MXene quantum dots for the sensitive determination of 2,4,6-trinitrophenol both on surfaces and in solution

2020 ◽  
Vol 8 (47) ◽  
pp. 10837-10844
Author(s):  
Xin Wang ◽  
Xiaodan Zhang ◽  
Haiyan Cao ◽  
Yuming Huang
Keyword(s):  
Quantum Dots ◽  
Uric Acid ◽  
Blue Light ◽  
Light Emission ◽  
Blue Light Emission ◽  
Microwave Assisted ◽  
Sensitive Determination ◽  
Microwave Assisted Method

The UA@Ti3C2 QDs with blue light emission were synthesized by a simple and green microwave-assisted method, and used as a sensitive and selective probe for the detection of TNP both on surfaces and in solution.

Enhanced blue-light emission on Cd0.9-xZn0.1CrxS(0 ≤ x ≤ 0.05) quantum dots

2019 ◽  
Vol 45 (3) ◽  
pp. 3833-3838 ◽  
Author(s):  
I. Devadoss ◽  
P. Sakthivel ◽  
S. Muthukumaran ◽  
N. Sudhakar
Keyword(s):  
Quantum Dots ◽  
Blue Light ◽  
Light Emission ◽  
Blue Light Emission

Cavity Design and Optimization of Hybrid Quantum Dot Organic Light Emitting Devices for Blue Light Emission

2020 ◽  
Vol 15 (11) ◽  
pp. 1364-1373
Author(s):  
Iman E. Shaaban ◽  
Ahmed S. Samra ◽  
Bedir Yousif ◽  
N. A. Alghamdi ◽  
Shamia El-Sherbiny ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Blue Light ◽  
Light Emission ◽  
Cdse Qds ◽  
Blue Light Emission ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

The present search handles the blue light emission investigation of hybrid quantum dots organic light-emitting devices. The emissions at 445 nm and 460 nm have been examined for microcavity hybrid quantum dot organic light-emitting devices (QD-OLED) upon quantum dots of CdS and CdSe. External light emissions have been evaluated through a numerical model based on the transfer matrix for electromagnetic plane waves. The devices' optical properties are investigated based on internal reflectance and cavity length by considering the architecture consisting of multilayers thin-film structures. The overall performance of the light-emitting devices with emission at 445 nm showed an improvement of the enhancement factor and narrowing outcoupling emission relative to the devices with emission at 460 nm. Besides, the light-emitting devices based on CdS QDs revealed better performance relative to the devices based on CdSe QDs.

Selective engineering of oxygen-containing functional groups using the alkyl ligand oleylamine for revealing the luminescence mechanism of graphene oxide quantum dots

Nanoscale ◽  
2017 ◽  
Vol 9 (47) ◽  
pp. 18635-18643 ◽  
Author(s):  
Min-Ho Jang ◽  
Hyunseung Yang ◽  
Yun Hee Chang ◽  
Hyun-Chul Park ◽  
Hyeonjung Park ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Functional Groups ◽  
Light Emission ◽  
Epoxide Group ◽  
Graphene Oxide Quantum Dots

The role of the epoxide group in light emission of GOQDs is demonstrated by selective passivation using the alkyl ligand oleylamine.

Simple and extremely efficient blue emitters based on mononuclear Cu(i)-halide complexes with delayed fluorescence

2014 ◽  
Vol 43 (46) ◽  
pp. 17317-17323 ◽  
Author(s):  
Hiroki Ohara ◽  
Atsushi Kobayashi ◽  
Masako Kato
Keyword(s):  
Blue Light ◽  
Light Emission ◽  
Delayed Fluorescence ◽  
Quantum Yields ◽  
Blue Light Emission ◽  
Solid States ◽  
High Quantum ◽  
Ligand System ◽  
Halide Complexes ◽  
Blue Emitters

Mononuclear Cu(i)-halide complexes with a ternary ligand system exhibit blue light emission based on delayed fluorescence with extremely high quantum yields, approaching 100% in the solid states.

Electroluminescence and Photocatalytic Hydrogen Evolution of S,N Co-doped Graphene Oxide Quantum Dots

2022 ◽  
Author(s):  
Tung-Kung Wu ◽  
Tzu-Yang Cheng ◽  
Feng-Pai Chou ◽  
Sheng-Cih Huang ◽  
Chin-Yuan Chang
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Hydrogen Evolution ◽  
High Yield ◽  
Hydrothermal Route ◽  
Photocatalytic Hydrogen Evolution ◽  
Facile Hydrothermal Route ◽  
Doped Graphene ◽  
Graphene Oxide Quantum Dots ◽  
Co Doped

A facile hydrothermal route to synthesize S,N co-doped graphene oxide quantum dots (S,N-GOQDs) with stable electroluminescence, photoluminescence, and photocatalytic properties was demonstrated. The synthesized S,N-GOQDs show high yield and excitation–independent...

scholarly journals Valorization of cellulose and waste paper to graphene oxide quantum dots

RSC Advances ◽  
2015 ◽  
Vol 5 (34) ◽  
pp. 26550-26558 ◽  
Author(s):  
Karin H. Adolfsson ◽  
Salman Hassanzadeh ◽  
Minna Hakkarainen
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Value Added ◽  
Waste Paper ◽  
Microwave Assisted ◽  
Hydrothermal Degradation ◽  
Graphene Oxide Quantum Dots

Valorization of cellulose and waste paper to value-added 2D graphene oxide quantum dots through 3D carbon nanosphere intermediates from microwave assisted hydrothermal degradation.

Blue-light emission from GaN∕Al0.5Ga0.5N quantum dots

2008 ◽  
Vol 92 (5) ◽  
pp. 051911 ◽  
Author(s):  
T. Huault ◽  
J. Brault ◽  
F. Natali ◽  
B. Damilano ◽  
D. Lefebvre ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Blue Light ◽  
Light Emission ◽  
Blue Light Emission

Preparation of graphene oxide and polymer-like quantum dots and their one- and two-photon induced fluorescence properties

2016 ◽  
Vol 18 (6) ◽  
pp. 4800-4806 ◽  
Author(s):  
Jia Jia Huang ◽  
Min Zhi Rong ◽  
Ming Qiu Zhang
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Fluorescence Properties ◽  
Two Photon ◽  
Microwave Assisted ◽  
Doped Graphene ◽  
One Step ◽  
Graphene Oxide Quantum Dots

Highly fluorescent N-doped graphene oxide quantum dots (GOQDs) and polymer-like quantum dots (PQDs) were developed by one-step microwave assisted pyrolysis.

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