Carbon dots produced via space-confined vacuum heating: maintaining efficient luminescence in both dispersed and aggregated states

2019 ◽  
Vol 4 (2) ◽  
pp. 388-395 ◽  
Author(s):  
Ding Zhou ◽  
Pengtao Jing ◽  
Yi Wang ◽  
Yuechen Zhai ◽  
Di Li ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Luminescence Quenching ◽  
Heating Method ◽  
Vacuum Heating

A space-confined vacuum heating method has been developed to produce carbon dots which do not experience aggregation-induced luminescence quenching.

scholarly journals APPARATUS FOR THE DETERMINATION OF HYDROGEN IN STEEL AND IRON BY THE VACUUM HEATING METHOD

1943 ◽  
Vol 29 (10-11) ◽  
pp. 863-869
Author(s):  
Takayuki Somiya ◽  
Shinzaburo Siraisi ◽  
Ohiko Kamimori
Keyword(s):  
Heating Method ◽  
Vacuum Heating

Synthesis of Sulfur-Doped Carbon Dots by Simple Heating Method

2015 ◽  
Vol 1123 ◽  
pp. 233-236 ◽  
Author(s):  
Handika Dany Rahmayanti ◽  
Sulhadi ◽  
Mahardika Prasetya Aji
Keyword(s):  
Band Gap ◽  
Carbon Dots ◽  
Raw Materials ◽  
Pure Water ◽  
Band Gap Energy ◽  
Light Spectrum ◽  
Heating Method ◽  
Homogeneous Solutions ◽  
Gap Energy ◽  
Doped Carbon Dots

Carbon Dots (C-Dots) was successfully prepared by simple heating method. The effect of additional elemental sulfur on the luminiscent performance of C-Dots was investigated. The preparation, chemical composition and optical properties such as absorbance and band gap energy are studied. The C-Dots were prepared with various mass sulfur 0.5-3.0 g and citric acid-urea was constant, i.e. 1.0 g and 4.0 g, respectively. This study used sulfur from natural deposit in Indonesia. The raw materials were prepared by mixing in pure water. The homogeneous solutions were heated at 225°C for 15 minutes under atmospheric pressure. The color emission of C-Dots is found in the visible light spectrum. The addition of sulfur in C-Dots phosphor caused the shifting of absorbance wavelength, i.e. 350-429 nm. By increasing mass of sulfur, the band gap energy of C-Dots decreased from 2.4 eV to 1.8 eV.

Conquering Aggregation-Induced Solid-State Luminescence Quenching of Carbon Dots through a Carbon Dots-Triggered Silica Gelation Process

2017 ◽  
Vol 29 (4) ◽  
pp. 1779-1787 ◽  
Author(s):  
Ding Zhou ◽  
Di Li ◽  
Pengtao Jing ◽  
Yuechen Zhai ◽  
Dezhen Shen ◽  
...  
Keyword(s):  
Solid State ◽  
Carbon Dots ◽  
Luminescence Quenching ◽  
Gelation Process ◽  
State Luminescence

scholarly journals Microwave-assisted in situ large scale synthesis of a carbon dots@g-C3N4 composite phosphor for white light-emitting devices

2020 ◽  
Vol 4 (2) ◽  
pp. 517-523 ◽  
Author(s):  
Li Meng ◽  
Elena V. Ushakova ◽  
Zhengjie Zhou ◽  
Enshan Liu ◽  
Di Li ◽  
...  
Keyword(s):  
White Light ◽  
Carbon Dots ◽  
Power Efficiency ◽  
Large Scale ◽  
Heating Method ◽  
Light Emitting ◽  
White Leds ◽  
Light Emitting Devices ◽  
Microwave Assisted

A composite phosphor comprising carbon dots and g-C3N4 is prepared on a large scale through a green microwave assisted in situ heating method, and is used for fabrication of white LEDs with a power efficiency of up to 42 lm W−1.

Ultrastable green fluorescence carbon dots with a high quantum yield for bioimaging and use as theranostic carriers

2015 ◽  
Vol 3 (22) ◽  
pp. 4577-4584 ◽  
Author(s):  
Chuanxu Yang ◽  
Rasmus Peter Thomsen ◽  
Ryosuke Ogaki ◽  
Jørgen Kjems ◽  
Boon M. Teo
Keyword(s):  
Quantum Yield ◽  
Carbon Dots ◽  
High Quantum Yield ◽  
Green Fluorescence ◽  
Heating Method ◽  
High Quantum ◽  
Doxorubicin Delivery ◽  
First Time

Green luminescent carbon dots with a high quantum yield and superior stability over a range of pH are synthesised for the first time via a new heating method. The carbon dots can be assembled into defined nanocomplexes as theranostic carriers for doxorubicin delivery.

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