150558-09-1Relevant academic research and scientific papers
Synthesis and study of an N,N-disubstituted 4-[(4-aminophenyl)diazenyl]benzaldehyde
Lai, Long-Li,Ho, Chia-Husan,Lin, Yu-Jen,Wang, Eshin,Liu, Yi-Hung,Wang, Yu,Lin, Yang-Chu,Cheng, Kung-Lung
, p. 108 - 114 (2002)
An N,N-disubstituted 4-[(4-aminophenyl)diazenyl]benzaldehyde ('azo dye') with nematic phase was synthesized by reaction of the phenylpiperazine derivative with the formylbenzenediazonium salt. The salt was prepared by a simplified reaction of poly(aminobenzaldehyde) with NaNO2 in the presence of HBF4. The azo dye was further studied by crystallography. On the basis of molecular stacking identified from crystallography, the molecular modeling was carried out to explore the molecular interactions, and it was found that the attraction of two coplanar molecules with side-to-side contact is favored, and a nematic phase is thus formed during the thermal process.
Dichroic azo dyes and black materials
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Paragraph 0019-0020, (2020/08/07)
in which R1 is hydrogen or methyl, R2 is hydrogen or methyl, and R3 is hydrogen, an unsubstituted linear alkyl group of from 1 to 4 carbon atoms, or an unsubstituted branched alkyl group of from 1 to 9 carbon atoms. This disclosure also provides a black dye composition including the azo compound represented by Formula (I).
