Luminescent materials with aggregation-induced emission (AIE) property have attracted considerable interests for their promising applications in light-emitting and display devices and fluorescent chemsensors. Coumarin and its derivatives are one of the most attractive chromophores for their excellent properties, such as high fluorescence quantum yield, large Stokes shift, less toxicity, ease of modification and visible wavelength emission. A coumarin-based AIE-active red fluorogen was designed and synthesised. It was found that CDPA exhibit AIE property, red emission, self-assembly and thermally activated delayed florescence (TADF) in solid state.