QUANTUM DOTS (FLUORESCENT NANOCRYSTALS)

Semiconductor Quantum Dots (QDs)are tiny light-emitting nanocrystals (2–10 nm). Compared to organic dyes and fluorescent proteins, quantum dots (QDs) have unique optical properties such as tunable emission spectra, improved brightness, superior photostability, and simultaneous excitation of multiple fluorescence colors giving them considerable value in various biomedical applications.

Fluorescent Nanocrystals are ideal for use in numerous applications in the field of nanoelectronics and opto-electronics or we can use it for further functionalization with various polymers and ligands. The size and composition of QDs can be varied to obtain the desired emission properties and make them amenable to simultaneous detection of multiple targets.

Fluorescent Nanocrystals can be isolated by using a polar/nonpolar solvent precipitation method. Normally, methanol is used as the polar solvent. Nanocrystals will begin to precipitate at 30-40% methanol in toluene. To impart water solubility additional surface modification is necessary.

There are two main approaches for the preparation of colloidal Qds:

1) Synthesis of Hydrophobic QDs

2) Aqueous Synthesis Routes

Hydrophobic QDs are insoluble in aqueous solution, they cannot be directly employed in bioapplications and require further surface modification to achieve water solubility, biocompatibility and stability. On the other hand, the aqueous synthesis route produces QDs with excellent water solubility, biological compatibility, and stability.

Mateial Availability

Our quantum dots are available both in organic soluble (oleic acid surface) and water soluble (carboxyl, amine & hydroxyl surfaces) formats.

Features
* Photostable (no bleaching)
* pH Neutral 
* Semiconductor Grade
* Narrow and sharp emission peaks
* All colors equally bright
* Comparable quantum efficiencies (50%) throughout the visible spectrum
* The vial contain toluene dissolved CdxSe1-x/ZnS (core/shell) fluorescent nanocrystals coated with oleic acid as ligand.

Image result for quantum dots cdse

1) Fluorescent Nanocrystals (Quantum Dots)

  • Organic Soluble- Quantum Dots Alkyl Modified (450nm-665nm)
  • Water Soluble- Quantum Dots Hydroxyl Modified (490nm-665nm)
  • Water Soluble- Quantum Dots Carboxyl Modified (490nm-665nm)
  • Water Soluble- Quantum Dots Amine Modified (490nm-665nm)

2) Fluorescent Nanocrystals (Optimization Panels)

  • Surface Chemistry Optimization Panels –Fluorescent Nanocrystals 490nm-650nm
  • Emission Optimization Panels – Fluorescent Nanocrystals 5 Colors (Alkyl, Carboxyl, Hydroxyl, Amine) 490nm-650nm

 

Contact Us For Quantum Dots & its Applications

You can easily purchase excellent quality nano materials at great prices. To Place an order download our order form and send to us. All materials are dispatched though registered couriers and post. You can also request for a quote by mailing us at info@reinste.com

For more Information visit us: www.nanodiagnosticsindia.com

Contact:+91 120 4781212,4781213, 4781230 or 91 9810662669. We invite you to contact us for further information about our company and our capabilities. At Reinste Nano Ventures, we could be glad to be of service to you. We look forward to your suggestions and feedback.

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