Acryloxyethyl Thiocarbamoyl Rhodamine B
Acryloxyethyl thiocarbamoyl Rhodamine B is a red-fluorescent, rhodamine-derived dye monomer that includes a reactive
acrylate group for covalent incorporation into polymer networks. It is commonly used to introduce stable fluorescence
into materials formed by free-radical polymerization, including functional hydrogels and polymer coatings.
Because the dye is polymerizable, fluorescence intensity can be tuned by adjusting the fluorescent monomer loading
within a copolymer formulation. The thiocarbamoyl linkage is used in some dye designs to support interactions with
biomolecules, which can be advantageous in labeling and tracking workflows when the dye is presented in a compatible
matrix or surface.
Optical Properties
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Excitation maximum: 548 nm
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Emission maximum: 570 nm
Key Features
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Polymerizable dye: Acrylate-functional monomer for covalent incorporation into polymers
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Red fluorescence: Rhodamine-based spectral profile (Ex 548 nm / Em 570 nm)
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Formulation control: Fluorescence can be tuned by changing monomer loading in copolymer systems
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Materials compatibility: Used in hydrogels, biomaterials, and functional coatings via polymerization
Applications
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Fluorescent hydrogels and biomaterials: Incorporation of fluorescence into polymer networks for visualization and tracking
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Biosensor and assay development: Fluorescent labeling within polymer matrices used in sensing formats
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Molecular and cellular imaging research: Polymer-integrated fluorescence for in vitro and, where appropriate, in vivo research workflows
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Smart polymers for bio-tracking: Functional polymer systems used for labeling or tracking studies (matrix- and method-dependent)
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Polymer-based optical coatings: Fluorescent coatings for research devices and surfaces where stable dye incorporation is desired
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Drug delivery research monitoring: Fluorescent labeling of carriers or matrices to support distribution or release studies (method-dependent)
FAQs
Common questions about Acryloxyethyl Thiocarbamoyl Rhodamine B.
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What does it mean that this dye is “polymerizable”?
Polymerizable dyes contain a reactive group (here, an acrylate) that can participate in polymerization,
allowing the fluorophore to be covalently built into a polymer network rather than physically mixed in.
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What are the excitation and emission maxima?
The provided spectral maxima are 548 nm (excitation) and 570 nm (emission).
Actual observed spectra can vary with solvent, pH, concentration, and polymer environment.
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How do I control fluorescence intensity in a copolymer?
Fluorescence intensity is commonly adjusted by changing the mole fraction (loading) of the fluorescent
monomer in the formulation, while keeping polymerization conditions and sample geometry consistent.
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Why choose a covalently incorporated dye instead of a physically blended dye?
Covalent incorporation can reduce dye migration or leaching in some systems and can provide more uniform
fluorescence throughout a polymer network, depending on formulation and processing.
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What polymer systems is this typically used with?
It is used in free-radical polymerization systems where acrylate chemistry is compatible, including many
hydrogel and coating formulations. Suitability depends on the full monomer mix, initiator, and processing
conditions.
