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Many red fluorescent materials were weak and even no luminescence in solid state due to concentration quenching. So a novel red fluorescent pigment bis(4-(N-(9-phenanthryl)-3,5-dimethyl- phenylamino)phenyl)fumaronitrile (PhMPAFN) was synthesized. PhMPAFN with a pair of antiparallel dipole suppressing molecular interaction exhibited strong red photoluminescence at 650 nm in solid film. The decomposition temperature was found at 424 °C. In different polarity of solvents the absorption and emission peaks of PhMPAFN showed positive and then negative solvatochromic shifts. PhMPAFN in tetrahydrofuran/water (1:1, 1:3, 1:5, 1:9, v/v) was aggregated into fluorescent organic nanoparticles (FONs) in the range of 164 and 531 nm (coverage rate over 98 %). FONs displayed strong aggregation-induced emission at about 620 nm and had potential use in nano-sized fluorescence and optoelectronic device.

Efficient red aggregation-induced emission based on bis(4-(N-(9- phenanthryl)-3,5-dimethylphenylamino)phenyl)fumaronitrile as organic nano-sized pigment