Abstract:Vinyl triphenyl methanol was synthesized by Barbier reaction, which shows aggregation-induced-emission (AIE) phenomenon. The polymers with different molecular weights were produced through reversible addition-chain transfer (RAFT) polymerization of vinyl triphenyl methanol. It is found that the polymer exhibit different AIE properties from its monomer and has no fluorescence at room temperature in both solid and solution states. However, after heating to its glass transition temperature, the fluorescence emission intensity of the solid polymer is significantly enhanced, and there is still no fluorescence in the polymer solution. In this paper, the special luminescence phenomenon and luminescence mechanism of the polymer were investigated. It is revealed that the fluorescence changes are related to the polymeric excimers by the characterization of NMR, IR, X-ray diffraction and thermodynamics.