We provide customers with a wide range of colloidal products, hurry up and place an order!

Search:

Online Inquiry
Verification code

CdS/ZnS & CdSSe/ZnS Quantum Dots, Blue/Green, Water soluble, 460nm

Typical Properties
Catalog ACMA00016748
Molecular Weight 6.83 x 105 g/mole
Purity 99.9 %
Appearance Dispersion
Storage Shelf life ≥ 1 yr if stored in dark between -15 and 8 °C
Absorption coefficient at first exciton peak 5.7 x 105 Liters/mole-cm
Composition CdS/ZnS
Diameter 5.6 nm
Diameter of core plus shell 7.5 nm
Emission Peak Width 17 nm
Fluorescent Emission Peak 460 nm
Functional Group Thiol molecule terminated with Acid, Amine or Diol
Quality Level 100
Quantum Yield ≥ 70 %
Shipping Ambient Temperature
Solvent Aqueous buffer, pH = 8
Surfactant Coating Thiol with carboxylic aicid/primary amine/2 adjacent hydroxyl end group
Overview
Description

Our CdS/ZnS & CdSSe/ZnS Quantum Dots quantum dots provide narrow-band fluorescence emission in the wavelength range of 420 nm to 520 nm. CdS/ZnS is a semiconductor nanoparticle, which is a typical direct bandgap compound of the IF VI group. Due to its large surface area and poor optical properties of quantum dots, ZnS is used as the shell layer to enhance its luminescence stability. CdSSe/ZnS is a ternary alloy quantum dot, which can absorb and cover the entire visible light band, thereby improving the performance of optical devices, which brings great application prospects. The dispersion in water is achieved by coating the surface of the quantum dots with hydrophilic surfactants. Three different water-soluble forms have surfactant end groups, which are carboxylic acids (-COOH), primary amines (-NH2), or diols (-CHOH-CH2OH).

Features

·Uniform particle size
·Strong monodispersity
·Broad absorption spectrum
·High level of photoluminescence
·Excellent stability

Application

·Fluorescent probes
·Solar battery
·In vivo bioimaging
·Microbial detection
·Drug carrier