CdS/ZnS & CdSSe/ZnS Quantum Dots, Blue/Green, Water soluble, 420nm

Typical Properties
Catalog	ACMA00016088
Molecular Weight	3.15 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	2.1 x 105 Liters/mole-cm
Composition	CdS/ZnS
Diameter	3.9 nm
Diameter of core plus shell	5.7 nm
Emission Peak Width	20 nm
Fluorescent Emission Peak	420 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