CdSe/ZnS Quantum Dots, Visible region, Water solvent, 620nm

Typical Properties
Catalog	ACMA00017379
Molecular Weight	3.50 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	2.9 x 105 Liters/mole-cm
Composition	CdSe/ZnS
Diameter	4.3 nm
Diameter of core plus shell	6.2 nm
Emission Peak Width	28 nm
Fluorescent Emission Peak	620 nm
Functional Group	Thiol molecule terminated with Acid, Amine or Diol
Quality Level	100
Quantum Yield	≥ 70 %
Shipping	Ambient Temperature
Solvent	Water
Surfactant Coating	Thiol with carboxylic aicid/primary amine/2 adjacent hydroxyl end group

Overview

Description

Our water-soluble CdSe/ZnS Quantum Dots are made by special surface modification to provide narrow-band fluorescence emission in the wavelength range of 540 nm to 680 nm with good biocompatibility, low nonspecific adsorption, quantum yield It has the characteristics of high molar extinction coefficient, stable optical properties and narrow emission spectrum. Water-soluble CdSe/ZnS Quantum Dots are coated with a hydrophilic surfactant to achieve dispersion in water. Three different water-soluble forms have surfactant end groups, which are carboxylic acids (-COOH), primary amines (-NH2), or diols (-CHOH-CH2OH). These coatings allow QDs to be covalently bonded to a variety of molecular probes and surfaces for many fluorescent labeling applications.

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