Search
Citations & References (17)
Invitrogen™
Qdot™ 655 ITK™ Amino (PEG) Quantum Dots
Qdot™ 655 ITK™ amino (PEG) quantum dots are the ideal starting material for preparing custom conjugates of ultrabright and photostableRead more
| Catalog Number | Quantity |
|---|---|
| Q21521MP | 250 μL |
Catalog number Q21521MP
Price (CNY)
12,880.00
Each
Quantity:
250 μL
Price (CNY)
12,880.00
Each
Qdot™ 655 ITK™ amino (PEG) quantum dots are the ideal starting material for preparing custom conjugates of ultrabright and photostable fluorescently labeled proteins or other biopolymers. These probes are functionalized with amine-derivatized PEG, which prevents non-specific interactions and provides a convenient handle for conjugation. The amino quantum dots react efficiently with isothiocyanates and succinimidyl esters, or with native carboxylic acids using water-soluble carbodiimides such as EDC. Such derivatives may be used for various labeling and tracking applications that require ultrabright and stable fluorescence. Our Qdot™ ITK™ amino quantum dots are provided as 8 μM solutions and are available in 8 colors of Qdot™ probes.
Important Features of Qdot™ ITK™ Amino Quantum Dots:
• Qdot™ 655 ITK™ amino quantum dot has emission maxima of ∼655 nm
• Extremely photostable and bright fluorescence
• Efficiently excited with single-line excitation sources
• Narrow emission, large stokes shift
• Available in multiple colors
• Ideal for various labeling and tracking applications
Properties of Qdot™ Nanocrystals
Qdot™ probes are ideal for imaging and labeling applications that require bright fluorescent signals and/or real-time tracking. Unique among fluorescent reagents, all nine available colors of Qdot™ probes can be simultaneously excited with a single (UV to blue-green) light source. This property makes these reagents excellent for economical and user-friendly multiplexing applications. Qdot™ labels are based on semiconductor nanotechnology and are similar in scale to moderately sized proteins.
About the Innovator’s Tool Kit Qdot™ ITK™ Reagents
These Qdot™ ITK™ probes are ideal for researchers who wish to prepare specific (non-stocked) conjugates for their applications and need customizable conjugation functionality.
Other Forms of Qdot™ Nanocrystals are Available
In addition to the amine-derivatized form, we offer Qdot™ ITK™ quantum dots with carboxyl and aliphatic hydrocarbon modifications. We’ve also developed a wide range of Qdot™ nanocrystals conjugates and labeling kits. Investigate the properties of Qdot™ nanocrystals or read the Molecular Probes™ Handbook Section 6.6—Qdot™ Nanocrystals to find out more.
For Research Use Only. Not intended for any animal or human therapeutic or diagnostic use.
Important Features of Qdot™ ITK™ Amino Quantum Dots:
• Qdot™ 655 ITK™ amino quantum dot has emission maxima of ∼655 nm
• Extremely photostable and bright fluorescence
• Efficiently excited with single-line excitation sources
• Narrow emission, large stokes shift
• Available in multiple colors
• Ideal for various labeling and tracking applications
Properties of Qdot™ Nanocrystals
Qdot™ probes are ideal for imaging and labeling applications that require bright fluorescent signals and/or real-time tracking. Unique among fluorescent reagents, all nine available colors of Qdot™ probes can be simultaneously excited with a single (UV to blue-green) light source. This property makes these reagents excellent for economical and user-friendly multiplexing applications. Qdot™ labels are based on semiconductor nanotechnology and are similar in scale to moderately sized proteins.
About the Innovator’s Tool Kit Qdot™ ITK™ Reagents
These Qdot™ ITK™ probes are ideal for researchers who wish to prepare specific (non-stocked) conjugates for their applications and need customizable conjugation functionality.
Other Forms of Qdot™ Nanocrystals are Available
In addition to the amine-derivatized form, we offer Qdot™ ITK™ quantum dots with carboxyl and aliphatic hydrocarbon modifications. We’ve also developed a wide range of Qdot™ nanocrystals conjugates and labeling kits. Investigate the properties of Qdot™ nanocrystals or read the Molecular Probes™ Handbook Section 6.6—Qdot™ Nanocrystals to find out more.
For Research Use Only. Not intended for any animal or human therapeutic or diagnostic use.
For Research Use Only. Not for use in diagnostic procedures.
Specifications
Chemical ReactivityCarboxylic Acid, Ketone, Aldehyde
Concentration8 μM
Emission655
Label or DyeQdot™ 655
Product TypeQuantum Dot
Quantity250 μL
Reactive MoietyAmine, Primary Amine
Shipping ConditionRoom Temperature
Label TypeQdot Nanocrystals
Product LineITK, Qdot
Unit SizeEach
Contents & Storage
Store in refrigerator (2–8°C).
Frequently asked questions (FAQs)
How large are the Qdot nanocrystals?
What is the best way to remove white precipitate from my ITK Qdot nanocrystals?
I see a white precipitate in my ITK Qdot nanocrystals; should I be concerned?
Why do my Qdot nanocrystals appear to be blinking?
My Qdot nanocrystals were brightly fluorescent before I mounted my samples; now I'm seeing a loss of fluorescence. Why is this happening?
Citations & References (17)
Citations & References
Abstract
Development of homogeneous binding assays based on fluorescence resonance energy transfer between quantum dots and Alexa Fluor fluorophores.
Journal:Anal Biochem
PubMed ID:16860286
'We studied the fluorescence resonance energy transfer (FRET) between quantum dots emitting at 565, 605, and 655 nm as energy donors and Alexa Fluor fluorophores with absorbance maxima at 594, 633, 647, and 680 nm as energy acceptors. As a first step, we prepared covalent conjugates between all three types
Targeted quantum dot conjugates for siRNA delivery.
Journal:Bioconjug Chem
PubMed ID:17630789
'Treatment of human diseases such as cancer generally involves the sequential use of diagnostic tools and therapeutic modalities. Multifunctional platforms combining therapeutic and diagnostic imaging functions in a single vehicle promise to change this paradigm. in particular, nanoparticle-based multifunctional platforms offer the potential to improve the pharmacokinetics of drug formulations,
Specific and covalent labeling of a membrane protein with organic fluorochromes and quantum dots.
Journal:Proc Natl Acad Sci U S A
PubMed ID:17785425
'The real-time observation of protein dynamics in living cells and organisms is of fundamental importance for understanding biological processes. Most approaches to labeling proteins exploit noncovalent interactions, unsuitable to long-term studies, or genetic fusion to naturally occurring fluorescent proteins that often have unsatisfactory optical properties. Here we used the fungal
Optimizing a waveguide-based sandwich immunoassay for tumor biomarkers: evaluating fluorescent labels and functional surfaces.
Journal:Bioconjug Chem
PubMed ID:19173652
'The sensor team at the Los Alamos National Laboratory has developed a waveguide-based optical biosensor for the detection of biomarkers associated with disease. We have previously demonstrated the application of this technology to the sensitive detection of carcinoembryonic antigen in serum and nipple aspirate fluid from breast cancer patients. In
Quantum dot targeting with lipoic acid ligase and HaloTag for single-molecule imaging on living cells.
Journal:ACS Nano
PubMed ID:23181687
'We present a methodology for targeting quantum dots to specific proteins on living cells in two steps. In the first step, Escherichia coli lipoic acid ligase (LplA) site-specifically attaches 10-bromodecanoic acid onto a 13 amino acid recognition sequence that is genetically fused to a protein of interest. In the second