Track topics on Twitter Track topics that are important to you
In recent times, fluorescent carbon quantum dots (CQDs) as an optical sensor have attained massive attention owing to their excellent optical properties. In current investigation, our group presented an easy and economical methodology to synthesize the nitrogen and phosphorous doped carbon quantum dots (N, P doped CQDs) for sensing dopamine (DA) and temperature in aqueous medium. The synthesized CQDs were characterized by using XRD, XPS, TEM, UV-Vis, FT-IR and fluorescence techniques. The N, P doped CQDs were synthesized via one-step microwave digestion method by using citric acid, ethylenediamine and urea phosphate as precursors. This method established the noble water solubility, good optical performances and fluorescence thermosensitivity of N, P doped CQDs. Also, N, P doped CQDs demonstrated a wide linear range of 10-500 μM (R = 0.994) and offered an electrifying detection limit of 0.021 μM for quantifying the dopamine. Moreover, this sensor possessed a good sensitivity, reversibility and linearity in the range of 10-70 °C. In addition, the CQDs sensing system repel the interference from probable foreign substances in real sample analysis, and attained good recoveries, which revealed the tremendous selectivity and adequate accuracy of the carbon quantum dots for sensing dopamine. The proposed N, P doped CQDs are simple as well as effective optical nanosensor and clasps venerable potential to widen the applications in analysis of biomolecules and other areas.
This article was published in the following journal.
Name: Journal of photochemistry and photobiology. B, Biology
A facile one-step hydrothermal method was developed to synthesize nitrogen-doped carbon quantum dots (N-CQDs) by utilizing hexamethylenetetramine as the carbon and nitrogen source. The quantum yield (...
Excessive reactive oxygen species can lead to irreversible damage for human body in vivo, therefore it is highly desirable to exploit efficient antioxidant. Recently, cerium oxide nanoparticles have a...
A novel molecularly imprinted polymer-capped acrylated nitrogen doped graphene quantum dots and bimetallic Au/Ag core-shell was synthesized to serve as a sensing nano-hybrid film for the detection of ...
Nitrite residue in hams was detected by a fluorescent and colorimetric sensor based on carbon dots (C-dots) and neutral red (NR). C-dots with green fluorescence was synthesized by a microwave-assisted...
Facile synthesis of carbon quantum dots with high fluorescence and excellent biocompatibility from plentiful and biocompatible materials still attracts much attention because of their great potential ...
This study will test the effectiveness of two different tuberculosis (TB) prevention strategies, DOTS or DOTS-A. DOTS is the current prevention strategy for TB. DOTS-A is an enhanced preve...
A clinical study enrolling 70 subjects to: - evaluate the user performance of the Pivot Breath Sensor - compare measurements from the Pivot Breath Sensor to a similar device ...
The objetive of the study is to evaluate the effect of personalized quantum sonotherapy on the level of anxiety and pain in outpatients schedule for orthopedic surgery under regional anest...
Tuberculosis (TB) is the most common opportunistic infection among HIV infected persons living in developing countries. Directly observed treatment, short-course (DOTS) is the internationa...
The researchers are trying to assess changes in physiological signals before and during seizures.
Nanometer sized fragments (the dots) of semiconductor crystalline material which emit PHOTONS. The wavelength is based on the quantum confinement size of the dot. They are brighter and more persistent than organic chemical INDICATORS. They can be embedded in MICROBEADS for high throughput ANALYTICAL CHEMISTRY.
Nanometer-sized particles that are nanoscale in three dimensions. They include nanocrystaline materials; NANOCAPSULES; METAL NANOPARTICLES; DENDRIMERS, and QUANTUM DOTS. The uses of nanoparticles include DRUG DELIVERY SYSTEMS and cancer targeting and imaging.
Microscopy of specimens stained with fluorescent dye (usually fluorescein isothiocyanate) or of naturally fluorescent materials, which emit light when exposed to ultraviolet or blue light. Immunofluorescence microscopy utilizes antibodies that are labeled with fluorescent dye.
A nonfluorescent reagent for the detection of primary amines, peptides and proteins. The reaction products are highly fluorescent.
A highly fluorescent anti-infective dye used clinically as a topical antiseptic and experimentally as a mutagen, due to its interaction with DNA. It is also used as an intracellular pH indicator.