Heparin sodium-selective ‘on–off’ and lysine-selective ‘off–on’ fluorescence switching of cadmium telluride quantum dots and their analytical applications

2016 ◽  
Vol 8 (2) ◽  
pp. 453-459 ◽  
Author(s):  
Hong Zhi Zhang ◽  
Rong Sheng Li ◽  
Ni Wang ◽  
Li Qi ◽  
Cheng Zhi Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Hydrogen Bonding ◽  
Fluorescence Quenching ◽  
Cadmium Telluride ◽  
Electrostatic Interaction ◽  
Heparin Sodium ◽  
Strong Electrostatic Interaction ◽  
Cdte Qds ◽  
Fluorescence Switching ◽  
Cadmium Telluride Quantum Dots

The fluorescence quenching of CdTe QDs could be induced by heparin sodium via hydrogen bonding, which was then recovered by lysine through a strong electrostatic interaction.

scholarly journals Gene Expression and Transcriptome Profiling of Changes in a Cancer Cell Line Post-Exposure to Cadmium Telluride Quantum Dots: Possible Implications in Oncogenesis

Dose-Response ◽  
2021 ◽  
Vol 19 (2) ◽  
pp. 155932582110198
Author(s):  
Mohammed S. Aldughaim ◽  
Mashael R. Al-Anazi ◽  
Marie Fe F. Bohol ◽  
Dilek Colak ◽  
Hani Alothaid ◽  
...  
Keyword(s):  
Gene Expression ◽  
Quantum Dots ◽  
Cancer Cells ◽  
Cadmium Telluride ◽  
Cancer Progression ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Dependent Manner ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

Cadmium telluride quantum dots (CdTe-QDs) are acquiring great interest in terms of their applications in biomedical sciences. Despite earlier sporadic studies on possible oncogenic roles and anticancer properties of CdTe-QDs, there is limited information regarding the oncogenic potential of CdTe-QDs in cancer progression. Here, we investigated the oncogenic effects of CdTe-QDs on the gene expression profiles of Chang cancer cells. Chang cancer cells were treated with 2 different doses of CdTe-QDs (10 and 25 μg/ml) at different time intervals (6, 12, and 24 h). Functional annotations helped identify the gene expression profile in terms of its biological process, canonical pathways, and gene interaction networks activated. It was found that the gene expression profiles varied in a time and dose-dependent manner. Validation of transcriptional changes of several genes through quantitative PCR showed that several genes upregulated by CdTe-QD exposure were somewhat linked with oncogenesis. CdTe-QD-triggered functional pathways that appear to associate with gene expression, cell proliferation, migration, adhesion, cell-cycle progression, signal transduction, and metabolism. Overall, CdTe-QD exposure led to changes in the gene expression profiles of the Chang cancer cells, highlighting that this nanoparticle can further drive oncogenesis and cancer progression, a finding that indicates the merit of immediate in vivo investigation.

Antibacterial potential of rutin conjugated with thioglycolic acid capped cadmium telluride quantum dots (TGA-CdTe QDs)

2015 ◽  
Vol 138 ◽  
pp. 684-692 ◽  
Author(s):  
Devanesan Arul Ananth ◽  
Angappan Rameshkumar ◽  
Ramachandran Jeyadevi ◽  
Sivanadanam Jagadeeswari ◽  
Natarajan Nagarajan ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cadmium Telluride ◽  
Thioglycolic Acid ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots ◽  
Antibacterial Potential

Luminescent CdTe quantum dots incarcerated in a columnar matrix of discotic liquid crystals for optoelectronic applications

RSC Advances ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1262-1267 ◽  
Author(s):  
Manish Kumar ◽  
Sandeep Kumar
Keyword(s):  
Quantum Dots ◽  
Thermal Properties ◽  
Liquid Crystal ◽  
Liquid Crystals ◽  
Cadmium Telluride ◽  
Cdte Quantum Dots ◽  
Discotic Liquid Crystals ◽  
Discotic Liquid Crystal ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

The effects of highly luminescent alkylamine-capped semiconductor cadmium telluride quantum dots (CdTe QDs) dispersion on the optical, electrical, thermal properties and supramolecular order of a discotic liquid crystal were studied.

Visual and dual-fluorescence homogeneous sensor for detection of pyrophosphatase in clinical hyperthyroidism samples based on selective recognition of CdTe QDs and coordination polymerization of Ce3+

2021 ◽  
Author(s):  
Piaopiao Chen ◽  
Runlian Qu ◽  
Wu Peng ◽  
Xiu Wang ◽  
Ke Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Cadmium Telluride ◽  
Polymeric Nanoparticles ◽  
Fluorescence Method ◽  
Selective Recognition ◽  
Signal Molecules ◽  
Dual Fluorescence ◽  
Coordination Polymerization ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

Here, we constructed a dual-fluorescence method for detection of pyrophosphatase (PPase) using pyrophosphate-cerium coordination polymeric nanoparticles (PPi-Ce CPNs) and cadmium telluride quantum dots (CdTe QDs) as signal molecules. The dual...

Colorimetric detection of urine glucose using a C/CdTe QDs–GOx aerogel based on a microfluidic assay sensor

2020 ◽  
Vol 8 (32) ◽  
pp. 7160-7165 ◽  
Author(s):  
Tao Hu ◽  
Kangkai Xu ◽  
Shanhu Qiu ◽  
Yu Han ◽  
Juan Chen ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Glucose Oxidase ◽  
Cadmium Telluride ◽  
Colorimetric Detection ◽  
Carbon Quantum Dots ◽  
Glucose Detection ◽  
Simple Method ◽  
Urine Glucose ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

A sensitive fluorescent microfluidic sensor based on carbon quantum dots (CQDs), cadmium telluride quantum dots (CdTe QDs) aerogel and glucose oxidase (GOx) for urinal glucose detection was fabricated via a simple method.

Cadmium telluride quantum dots/graphene oxide/poly vinyl acetate (CdTe QDs/GO/PVAc) nanocomposite: a novel sensor for real time gamma radiation detection

2020 ◽  
Vol 108 (6) ◽  
pp. 483-490
Author(s):  
Mohammad Hosein Mehrabian ◽  
Shahzad Feizi ◽  
Shahram Moradi Dehaghi
Keyword(s):  
Quantum Dots ◽  
Graphene Oxide ◽  
Dose Rate ◽  
Real Time ◽  
Cadmium Telluride ◽  
Vinyl Acetate ◽  
Radiation Detection ◽  
Water Soluble ◽  
Cdte Qds ◽  
Cadmium Telluride Quantum Dots

AbstractThe design of organic/inorganic nanoparticles hybrids provides the great potential for the fabrication of γ-ray sensor systems. Herein, structural and dosimetric properties of the gamma irradiated poly vinyl acetate (PVAc) doped with cadmium telluride quantum dots (CdTe QDs) and graphene oxide (GO) nanoflakes have been investigated. Thioglycolic acid (TGA) capped water-soluble CdTe QDs and (GO) nanoflakes are synthesized and characterized. Then, CdTe QDs/GO/PVAc sensors were formed by post-depositing CdTe and GO over polymer matrix. The photophysical interactions between nanoparticles and organic polymer have been investigated using ohmic contact detectors with two gold coated electrodes. Real time dose rate information of the sensors such as sensitivity, repeatability, and the linearity of dose rate response were assessed. A wider photoelectric response range and wider gamma harvesting range were observed in the resultant hybrid gamma sensor at a standard bias voltage with respect to non-hybrid CdTe QDs/PVAc sensors.

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