1-[4-(Dimethylamino)phenyl]-6-phenyl hexatriene

1-[4-(dimethylamino)phenyl]-6-phenylhexa-1,3,5-triene (DMA-DPH) is a green-emitting dye that is part of a class of molecules known as "push-pull" chromophores. It can be used as a photoemitter in organic light-emitting diodes (OLEDs) for screen displays and solid-state lighting applications. When dispersed in a polymer matrix, a mixture of neutral DMA-DPH (green emitter) and another chromophore can produce red, green, and blue light. The neutral form of DMA-DPH emits green light, while its protonated form, DMA-DPH_p, emits a high-intensity blue light, which is a key mechanism for producing blue color on demand. This makes DMA-DPH a versatile material for tuning emitted colors in OLEDs. DPH is used as a fluorescent probe to study cell membranes and lipid bilayers.