A novel nitrogen-doped dual-emission carbon dots as an effective fluorescent probe for ratiometric detection dopamine
2021-05-28
(Press-News.org) How to construct the dual emission nitrogen-doped carbon dots (CDs) by a simple method? Professor Lili Ren with her collaborators proposed a new strategy to prepare such materials which were used to the detection of dopamine.
The traditional ratiometric fluorescence (FL) probe usually needs to combine different nanomaterials by chemical or physical methods and the manufacturing process is more complicated. While the dual-emission carbon dots (DECDs) can simplify the detection process. Therefore, it is of great significance to design a simple ratiometric fluorescence probe based on the DECDs for the accurate determination of DA concentration. Here, a new kind of dual-emission N-doped carbon dots (N-CDs) was prepared by one-pot hydrothermal method with p-phenylenediamineas as carbon source and triethylamine as nitrogen dopant. The synthesized N-CDs show FL emission at 435 nm and 595 nm under 360 nm excitation wavelength. The N-CDs can be used as a ratiometric fluorescence probe for highly selective detection of DA. This is the first time to report the dual-emission fluorescence carbon dots to detect DA.
This work not only develops a new method for preparing dual emission nitrogen-doped carbon dots, but also exploits an economic, environmentally friendly, sensitive and specific DA detection method.
This work was supported by A Project Subsidized the Priority Academic Program Development of Jiangsu Higher Education Institutions (1107047002).
The paper https://www.worldscientific.com/doi/10.1142/S1793292021500302 can be found in NANO https://www.worldscientific.com/worldscinet/nano journal.
INFORMATION:
ELSE PRESS RELEASES FROM THIS DATE:
2021-05-28
Singapore University of Technology and Design (SUTD) researchers have uncovered how the environment can impact highly sensitive quantum behaviours like localisation. Their findings, published in Chaos, could lead to future innovations in the design of superconducting materials and quantum devices, including super precise sensors.
Quantum technology, in particular quantum sensing, promises to measure and capture our world at levels of precision never before possible. Such precision has diverse applications, from speedier and more sensitive medical imaging to recording time on high-frequency ...
2021-05-28
In the Philippines, in the early months of the COVID-19 pandemic, there occurred a supply shortage of hydroxychloroquine and methotrexate. Limited access to medication and the life changes caused from the COVID-19 pandemic may prompt patients with rheumatoid arthritis (RA) or systemic lupus erythematosus (SLE) to experience disease flares.
The researchers investigated self-reported symptoms of disease flares among patients with rheumatoid arthritis or systemic lupus erythematosus during the COVID-19 pandemic. They collected information through online surveys from 512 patients with SLE or RA. The data included ...
2021-05-28
The Montreal Heart Institute (MHI) announces that the COLCORONA study results are published today in The Lancet Respiratory Medicine. The article, which is entitled Colchicine for community-treated patients with COVID-19 (COLCORONA): a phase 3, randomised, double-blinded, adaptive, placebo-controlled, multicentre trial, concludes that, given the lack of oral therapies available to prevent COVID-19 complications among non-hospitalized patients and the observed benefit of colchicine in patients with a PCR-confirmed diagnosis of COVID-19, this anti-inflammatory drug could be considered as a treatment for those at risk of ...
2021-05-28
Multiple scientific studies show switching completely to vaping with high-quality products has reduced health risks compared to smoking, contrary to many consumer beliefs
Study data indicates that vaping products can provide an alternative for smokers who would not otherwise quit
Review supports the important role for vaping products in Tobacco Harm Reduction
Reinforces the importance of BAT's unique consumer-centric model and how we are reducing the health impact of our business and building A Better Tomorrow™ through our multicategory approach
To mark World Vape Day, BAT has today published a comprehensive review of the scientific evidence ...
2021-05-28
In a world first, scientists from the University of Sussex have recorded blood oxygen levels in the hippocampus and provided experimental proof for why the area, commonly referred to as 'the brain's memory centre', is vulnerable to damage and degeneration, a precursor to Alzheimer's disease.
To understand why this region is so sensitive, the University of Sussex researchers, headed up by Dr Catherine Hall from the School of Psychology and Sussex Neuroscience, studied brain activity and blood flow in the hippocampus of mice. The researchers then used simulations to predict that the amount of oxygen supplied to hippocampal neurons furthest from blood vessels is only just enough for the cells to keep working normally.
Dr Catherine ...
2021-05-28
The basis for this new take on the classification was laid in 1985, when John Long attributed a fossil tooth plate to a new species, Edaphodon eyrensis. The species was named after Lake Eyre, near which the tooth was found in 1978.
Asscoiate Professor Evgeny Popov had his doubts about the attribution. However, he had to study the fossil personally to advance his theory. The opportunity presented itself during a trip to Australia in 2010. The tooth plate was stored in a museum in Adelaide, South Australia.
"I didn't plan to go there, but I was able to negotiate a temporary ...
2021-05-28
A research group from Aarhus University has developed a special biocompatible electrode for electrical muscle stimulation that the group has integrated and 3D-printed onto medical support stockings.
In the winter 2020/2021, the stockings were tested on hospitalised Covid patients. The studies were completed in March, but apart from a case study (Danish Medical Journal) data have not yet been published. However, the project group reveal that the results are very promising.
The stockings were tested on 16 Covid-19 patients who agreed to try the support stocking during their hospitalisation. The participants were hospitalised for five to seven days and were given a support stocking on each leg, but only ...
2021-05-28
The countries around the Baltic Sea do not respect their binding international agreement to reduce agricultural pollution of the marine environment. Despite farming activities being the single most important source of nutrient pollution to the Baltic Sea.
An international research team presents evidence on these circumstances in a recent scientific article in the journal Ambio, published by the Royal Swedish Academy of Sciences.
The countries made a commitment 20 years ago to implement 10 specific reduction measures in their national legislation on agricultural pollution - e.g. featuring minimum storage capacity for manure and regulations on animal densities.
Now the researchers' study of legislations and regulations in place at national level, to address ...
2021-05-28
AMES, Iowa - Researchers have developed new types of materials that combines two or three types of nanoparticles into structures that display fundamental new properties such as superfluorescence.
"The whole goal of this research is to make new materials with new properties and/or exotic new structures," said Alex Travesset, an Iowa State University professor of physics and astronomy and an associate scientist for the U.S. Department of Energy's Ames Laboratory. "Those materials are made of very tiny materials, nanoparticles, and lead to properties not shared by more traditional materials made of atoms and molecules."
In this case, an international research team is combining perovskite nanocubes - tiny crystals with useful electrical or optical properties ...
2021-05-28
Metal-organic framework compounds (MOFs) consist of inorganic and organic groups and are characterised by a large number of pores into which other molecules can be incorporated. MOFs are therefore interesting for many applications, for example for the storage of gases, but also for substance separation, sensor technology or catalysis. Some of these MOF structures react to different guest molecules by changing their structures. They are thus considered switchable.
One of these is "DUT-8", a material that has now been studied at the MX beamlines of BESSY II. "MOF crystals can be analysed very well at the MX beamlines," says HZB expert Dr. Manfred Weiss, who heads the MX team. ...
LAST 30 PRESS RELEASES:
[Press-News.org] A novel nitrogen-doped dual-emission carbon dots as an effective fluorescent probe for ratiometric detection dopamine
