These nanobeads are soluble in water. There are -OH groups present on the bead surface. The excitation and emission spectra are shown below.
797928
Fluorescent silica nanobeads
25 nm, lyophilized
Synonym(s):
Fluorescent beads, Fluorescent nanoparticles, Silica nanoparticles
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About This Item
Linear Formula:
SiO2
Molecular Weight:
60.08
UNSPSC Code:
12352302
NACRES:
NA.23
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Quality Level
form
powder
particle size
25 nm
fluorescence
λem 590 nm
UV absorption
λ: 570 nm Amax
storage temp.
2-8°C
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Application
The use of labeling or staining agents has greatly assisted the study of complex biological interactions in biology and the fluorescent labeling of biomolecules has been demonstrated as an indispensable tool in many biological studies. By virtue of excellent fluorescence properties the silica nanobeads find application in biological labeling, bioimaging, biosensing etc.[1][2]
Storage Class
11 - Combustible Solids
wgk_germany
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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Find documentation for the products that you have recently purchased in the Document Library.
Geometrical confinement of quantum dots in porous nanobeads with ultraefficient fluorescence for cell-specific targeting and bioimaging
P-J Chen, S-H Hu, W-T Hung, S-Y Chen, and D-M Liu,
Journal of Materials Chemistry, 22(19), 9568-9575 (2012)
Luminescent nanomaterials for biological labelling
F. Wang, W. B. Tan, Y. Zhang, et al.
Nanotechnology, 17(1), R1-R13 (2006)
Articles
RAFT polymerization controls chain growth, yields defined polymers without cytotoxic heavy metals like ATRP.
Biomaterials science integrates smart materials into biological research, requiring a deep understanding of biological systems.
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Are they water soluble or we need to use dmso or other organic solvents?
1 answer -
what type of amorphous silica is this (i.e. colloidal, fumed, fused, etc..)
1 answer-
The particles are highly monodispersed, but the method of synthesis is proprietary to the manufacturer.
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Are they stable in high ionic strength buffers?
1 answer-
These nanobeads are negatively charged in water. Alkaline solutions, such as ammonia, may improve stability. The stability in a high ionic strength buffer would depend on the specific components, but most often would not enhance the stability.
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