In 2022,Yamaguchi, Hinano; Kondo, Mizuho; Sasaki, Tomoyuki; Sakamoto, Moritsugu; Ono, Hiroshi; Kawatsuki, Nobuhiro published an article in Langmuir. The title of the article was 《Polarized Fluorescence of N-Salicylideneaniline Derivatives Formed by In Situ Exchange from N-Benzylideneaniline Side Groups in Photoaligned Liquid Crystalline Copolymer Films》.Electric Literature of C8H8O3 The author mentioned the following in the article:
Polarized fluorescence of oriented N-salicylideneaniline (SA) derivatives is explored based on the thermally stimulated photoinduced mol. reorientation of liquid crystalline (LC) copolymethacrylate with N-benzylideneaniline derivative (NBA2) and benzoic acid (BA) side groups. The LC copolymer films show significant cooperative mol. reorientation of the NBA2 and BA side groups (D > 0.7). Subsequent thermal hydrolysis of the NBA2 side groups yields free phenylamine moieties. These moieties can form oriented SA derivatives via in situ condensation with 2-hydroxybenzaldehyde derivatives The excited-state intermol. proton transfer of the oriented SA mols. induces polarized fluorescence at 510-548 nm with a polarization ratio up to 6.2. Direct in situ exchange from the oriented NBA2 to SA derivatives achieves polarized fluorescence similar to that of the SA side groups. In addition to this study using 2-Hydroxy-4-methoxybenzaldehyde, there are many other studies that have used 2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3Electric Literature of C8H8O3) was used in this study.
2-Hydroxy-4-methoxybenzaldehyde(cas: 673-22-3) is the main component of root bark essential oil of Periploca sepium Bunge. It is a potential tyrosinase inhibitor present in African medicinal plants. 2-Hydroxy-4-methoxybenzaldehyde was used in the synthesis of Schiff base ligand.Electric Literature of C8H8O3
Referemce:
Ether – Wikipedia,
Ether | (C2H5)2O – PubChem