What Is (4-(1,2,2-Triphenylvinyl)phenyl)methanamine?

(4-(1,2,2-Triphenylvinyl)phenyl)methanamine, also referred to as a TPE-methylamine or TPE-CH₂NH₂ derivative, is a member of the tetraphenylethylene family of compounds. The core tetraphenylethylene scaffold is well established as a prototypical aggregation-induced emission (AIE) luminogen: it is virtually non-emissive in dilute solution due to active intramolecular rotation of its phenyl rings, but becomes highly fluorescent upon aggregation or restriction of molecular motion.

The distinguishing feature of this particular derivative is the primary benzylic amine group (-CH₂NH₂) appended to one of the four phenyl rings. This handle makes the compound a reactive building block that can be conjugated to a wide variety of electrophilic partners—including aldehydes (Schiff base formation), activated esters, acid chlorides, isocyanates, and epoxides—enabling the incorporation of the AIE-active TPE unit into complex molecules, polymers, and biological probes.

AIE Mechanism and Photophysical Behavior

The AIE behavior of TPE-based compounds, including (4-(1,2,2-Triphenylvinyl)phenyl)methanamine, is primarily attributed to the restriction of intramolecular rotation (RIR) mechanism. In dilute solution, the four phenyl substituents on the ethylene core can rotate freely, which provides an efficient non-radiative decay pathway that quenches fluorescence. When the molecules aggregate—either by adding a poor solvent, increasing concentration, or fixing them in a solid or gel matrix—this rotation is physically restricted, non-radiative pathways are blocked, and the radiative emission channel dominates, resulting in intense fluorescence.

The emission of TPE derivatives typically falls in the blue-to-green region of the visible spectrum, though the exact wavelength depends on the substitution pattern and the local environment. Researchers exploiting this compound should note that fluorescence measurements in pure organic solvents may significantly underestimate the material's emissive potential; measurements in aggregated states (solid, nanoparticle suspension, or high-water-fraction mixtures) are recommended to fully characterize its photophysics.

Handling, Storage, and Safety

Storage: (4-(1,2,2-Triphenylvinyl)phenyl)methanamine should be stored in a cool, dry, well-ventilated location away from light, heat, and moisture. As with most primary amines, the compound may be susceptible to oxidation and carbamation (reaction with atmospheric CO₂); storage under an inert atmosphere (nitrogen or argon) in a tightly sealed container is advisable for long-term preservation of purity.

Handling: Standard laboratory precautions for organic amines apply. Personal protective equipment including nitrile gloves, safety glasses, and a laboratory coat should be worn. Operations that generate dust or aerosols should be conducted in a fume hood. The compound should not be exposed to strong oxidizers, acid chlorides, or reactive electrophiles outside of intentional synthetic steps.

Disposal: Dispose of waste material in accordance with local, regional, and national regulations governing organic chemical waste. Do not discharge into drains or the environment. Consult the Safety Data Sheet (SDS) for complete hazard and disposal information before use.

Applications in Research and Synthesis

The reactive primary amine of (4-(1,2,2-Triphenylvinyl)phenyl)methanamine makes it a valued intermediate across several research domains:

• Fluorescent probes and sensors: Condensation with aldehydes or ketones generates Schiff base (imine) products that can be designed to respond to analytes such as metal ions, anions, or reactive oxygen species, enabling ratiometric or turn-on fluorescence sensing with an AIE-active readout.
• AIE-active polymers and materials: The amine group can be incorporated into polyimides, polyureas, polyamides, and epoxy resins, imparting solid-state fluorescence to otherwise non-emissive matrices.
• Bioconjugation and bioimaging: Coupling to NHS esters, maleimides, or other bioconjugation handles allows attachment to biomolecules (peptides, antibodies, nucleic acids), producing AIE-labeled bioconjugates for cell imaging or biosensing applications.
• Supramolecular chemistry: The amine can participate in hydrogen bonding, host–guest interactions, or metal–organic framework (MOF) construction as a nitrogen-donor ligand.

Ordering and Product Information

(4-(1,2,2-Triphenylvinyl)phenyl)methanamine is available from Aladdin Scientific under SKU T587351. Researchers and procurement professionals can order directly through the Aladdin Scientific website. For bulk quantities, custom packaging, or certificate of analysis (CoA) requests, please contact Aladdin Scientific customer service.

When placing an order, please quote the SKU T587351 to ensure correct product identification. The product is supplied with standard quality documentation; a CoA specifying purity, appearance, and analytical data is available upon request. For regulatory or compliance needs, the corresponding Safety Data Sheet (SDS) is accessible through the product page on the Aladdin Scientific website.