Electrogenerated chemiluminescence from carbon dots

2011 ◽  
Vol 1284 ◽  
Author(s):  
L. Sun ◽  
T.-H. Teng ◽  
Md. H. Rashid ◽  
M. Krysmann ◽  
P. Dallas ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Carbon Dots ◽  
Charge Injection ◽  
Interesting Property ◽  
Electrogenerated Chemiluminescence ◽  
Electroluminescent Devices ◽  
Wet Chemistry ◽  
20 Nm ◽  
Carbon Based

ABSTRACTWe report an interesting property of carbon dots: they emit light under charge injection. We synthesized carbon dots in diameter about 20 nm using wet chemistry methods. The photoluminescence quantum efficiency of the carbon dots dissolved in water was about 11%. We observed strong electrogenerated chemiluminescence (ECL) from the sample. This observation of ECL from carbon dots indicates that they could be a good candidate material for carbon-based electroluminescent devices.

scholarly journals A Facile Co-crystallization Approach to Fabricate Two-component Carbon Dots Composites Showing Time-Dependent Evolutive Room Temperature Phosphorescence Colors

2021 ◽  
Author(s):  
Jian Qu ◽  
Xin Zhang ◽  
Zhong-Jie Wang ◽  
Shuyan Zhang ◽  
Yejian Yu ◽  
...  
Keyword(s):  
Carbon Dots ◽  
Room Temperature ◽  
Data Encryption ◽  
Time Dependent ◽  
Security Level ◽  
Room Temperature Phosphorescence ◽  
Two Component ◽  
Carbon Based

Time-dependent evolutive afterglow materials can increase the security level by providing additional encryption modes in anti-counterfeiting and data encryption. The design of carbon-based materials with dynamic afterglow colors is attractive...

Temperature Dependent Photoluminescence of ZnSe/Alq3 Hybrid Heterostructure

2008 ◽  
Vol 55-57 ◽  
pp. 493-496
Author(s):  
Wisanu Pecharapa ◽  
P. Potirak ◽  
W. Yindeesuk
Keyword(s):  
Electron Beam ◽  
Quantum Efficiency ◽  
Exciton State ◽  
Temperature Dependent ◽  
Pl Spectra ◽  
20 Nm ◽  
Temperature Dependent Photoluminescence

II-VI inorganic/organic heterostructures consisting of ZnSe and tris(8-hydroxyquinoline) aluminum (Alq3) were prepared by electron beam evaporator. Alq3 layer with 20 nm was grown between 200-nm ZnSe layers. Photoluminescence measurement was conducted at various temperatures in order to investigate the important temperature-dependent parameters of this structure. PL spectra revealed thermal population of exciton state and the change in PL quantum efficiency of the film.

scholarly journals CARBON DOTS: A NOVEL PLATFORM FOR BIOMEDICAL APPLICATION

2021 ◽  
Author(s):  
Mohammadreza Behi ◽  
Leila Gholami ◽  
Sina Naficy ◽  
Stefano Palomba ◽  
Fariba Dehghani
Keyword(s):  
Carbon Dots ◽  
Biomedical Application ◽  
Distinctive Features ◽  
Carbon Based

Carbon dots (CDs) are a latterly synthesised class of carbon-based nanostructures known as zero-dimensional (0D) nanomaterials, which have drawn a great deal of researcher’s attention owing to their distinctive features,...

Oxygen-defective ZnO porous nanosheets modified by carbon dots to improve their visible-light photocatalytic activity and gain mechanistic insight

2020 ◽  
Vol 44 (26) ◽  
pp. 11215-11223 ◽  
Author(s):  
Feng Guo ◽  
Haoran Sun ◽  
Lei Cheng ◽  
Weilong Shi
Keyword(s):  
Photocatalytic Activity ◽  
Liquid Phase ◽  
Visible Light ◽  
Carbon Dots ◽  
Composite Photocatalyst ◽  
Wet Chemistry ◽  
Mechanistic Insight ◽  
Porous Nanosheets ◽  
One Step ◽  
Visible Light Photocatalytic

A carbon dots/oxygen-defective ZnO (COZ) porous nanosheet composite photocatalyst was prepared via a one-step liquid-phase wet chemistry method for the highly efficient visible-light photocatalytic degradation of tetracycline (TC).

scholarly journals Highly conductive carbon-based aqueous inks toward electroluminescent devices, printed capacitive sensors and flexible wearable electronics

RSC Advances ◽  
2019 ◽  
Vol 9 (27) ◽  
pp. 15184-15189 ◽  
Author(s):  
Yu Liao ◽  
Rui Zhang ◽  
Hongxia Wang ◽  
Shuangli Ye ◽  
Yihua Zhou ◽  
...  
Keyword(s):  
Capacitive Sensors ◽  
Wearable Electronics ◽  
Electroluminescent Devices ◽  
Conductive Inks ◽  
Carbon Based

Carbon-based conductive inks are one of the most important materials in the field of printing electronics.

scholarly journals Nanotheranostic Carbon Dots as an Emerging Platform for Cancer Therapy

2020 ◽  
Vol 1 (1) ◽  
pp. 58-77
Author(s):  
Sumiya Adrita ◽  
Khandaker Tasnim ◽  
Ji Ryu ◽  
Shazid Sharker
Keyword(s):  
Cancer Treatment ◽  
Carbon Dots ◽  
High Surface ◽  
High Surface Area ◽  
Volume Ratio ◽  
Biomedical Sciences ◽  
Diagnosis And Therapy ◽  
Low Dimensional ◽  
Carbon Based Nanomaterials ◽  
Carbon Based

Cancer remains one of the most deadly diseases globally, but carbon-based nanomaterials have the potential to revolutionize cancer diagnosis and therapy. Advances in nanotechnology and a better understanding of tumor microenvironments have contributed to novel nanotargeting routes that may bring new hope to cancer patients. Several low-dimensional carbon-based nanomaterials have shown promising preclinical results; as such, low-dimensional carbon dots (CDs) and their derivatives are considered up-and-coming candidates for cancer treatment. The unique properties of carbon-based nanomaterials are high surface area to volume ratio, chemical inertness, biocompatibility, and low cytotoxicity. It makes them well suited for delivering chemotherapeutics in cancer treatment and diagnosis. Recent studies have shown that the CDs are potential applicants in biomedical sciences, both as nanocarriers and nanotransducers. This review covers the most commonly used CD nanoparticles in nanomedicines intended for the early diagnosis and therapy of cancer.

scholarly journals Effect of Solvents on the Quantum Efficiency of Rubrene Electrogenerated Chemiluminescence

1973 ◽  
Vol 51 (20) ◽  
pp. 3467-3472 ◽  
Author(s):  
A. Pighin
Keyword(s):  
Quantum Efficiency ◽  
Electrogenerated Chemiluminescence ◽  
Side Reactions ◽  
Precise Method ◽  
Square Wave ◽  
Wave Potential ◽  
Effect Of Solvents

A simple and precise method for measuring the efficiency of electrogenerated chemiluminescence (e.g.c.l.) in terms of photons/(Faradaic electron)(Φcoul) is described and applied to rubrene e.g.c.l. A symmetrical square wave potential having a frequency of 20–1000 Hz was employed to produce the e.g.c.l. The electrogenerated ion radicals were shown to be completely stable at these frequencies; consequently, Φcoul was determined in the absence of side reactions. Change of solvent from N,N-dimethylformamide (DMF) to equivolume benzene-DMF resulted in an increase in Φcoul from 0.67 to 1.21% at 20 Hz. Φcoul decreased with increasing frequency. Varying the electrolyte (tetra-n-butylammonium perchlorate, TBAP) concentration did not affect Φcoul.

Temperature Dependence of Internal Quantum Efficiency of 20-nm-Wide GaInAsP/InP Compressively-Strained Quantum-Wire Lasers

1999 ◽  
Vol 38 (Part 1, No. 1B) ◽  
pp. 585-588 ◽  
Author(s):  
Takashi Kojima ◽  
Hiroyuki Nakaya ◽  
Suguru Tanaka ◽  
Hideo Yasumoto ◽  
andShigehisa Arai
Keyword(s):  
Temperature Dependence ◽  
Quantum Efficiency ◽  
Quantum Wire ◽  
Internal Quantum Efficiency ◽  
20 Nm

Charge injection into porous silicon electroluminescent devices

1998 ◽  
Vol 51 (1-3) ◽  
pp. 141-145 ◽  
Author(s):  
G Wakefield ◽  
P.J Dobson ◽  
J.L Hutchison ◽  
Y.Y Foo
Keyword(s):  
Porous Silicon ◽  
Charge Injection ◽  
Electroluminescent Devices
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