Polystyrene beads are available in several formats - unmodified, carboxyl-modified, or amine-modified - as well as various colors and numberous sizes. This particular product is an amine-modified bead containing a blue fluorescent dye. See the image below to review the basic structure. This is a surface modification that allows for the attachment of certain ligands such as polypeptides via the carboxyl-terminus. The dyes are embedded in the polystyrene bead during the manufacturing process. These are not bound to the surface of the bead.
L1403
Latex beads, sulfate-modified polystyrene, fluorescent orange
aqueous suspension, 0.5 μm mean particle size
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About This Item
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form
aqueous suspension
Quality Level
composition
Solids, 2.5%
mean particle size
0.5 μm
fluorescence
λex ~520 nm; λem ~540 nm
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Application
Sulfate-modified polystyrene latex beads have been used to develop an electrochemical nitrite nanosensor as well as in voltammetric studies. Sulfate-modified polystyrene latex beads have been used to explain the partitioning behavior for certain species of bacteria.
Storage Class Code
10 - Combustible liquids
WGK
WGK 2
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
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A novel hemoglobin (Hb)-coated polystyrene (PS) latex bead film was deposited on pyrolytic graphite (PG) electrode surface. In the first step, positively charged Hb molecules in pH 5.0 buffers were adsorbed on the surface of negatively charged, 500 nm diameter
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Tripp, B.C., et al.
Colloids and Surfaces, B: Biointerfaces, 6, 151-164 (1996)
Electrochemical nitrite nanosensor developed with amine- and sulphate-functionalised polystyrene latex beads self-assembled on polyaniline
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Electrochimica Acta, 55, 4274-4280 (2010)
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Does the polystyrene bead have amine groups attached to the bead surface? What is the purpose of this modification? How is the dye bound to these beads.
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