Yang Ming-d
2014
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Journal
Chinese Journal of Synthetic Chemistry
Abstract
A optical functional materials intermediate,4-nitro-4'-( N,N-diphenyl-amino)-1,2-stilbene( 1),was synthesized by Wittig reaction of triphenylamino formaldehyde with( 4-nitrobenzyl) triphenylphosphine bromide through solid-state grinding method in the yield of 45. 5%. The structures were confirmed by1H NMR,13C NMR,IR and MS. The optical properties of 1 were investigated by UV and FL. The results showed that λ max of 1 were 295 nm and 400 nm ~ 420 nm. Polarity of solvent makes great effect on the fluorescence spectra of 1. With increasing polarity,the fluorescence intensity of 1 decreases and the fluorescence peaks shift towards long wavelength.