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정평진,임회득,Chung, Pyung-Jin,Lim, Hoi-Deuk 한국재료학회 2003 한국재료학회지 Vol.13 No.8
As a fundamental study on organic electroluminescence(EL), blue emitting materials were synthesized and characterized. Individual blue colored hydrazone derivatives were synthesized from the reaction of aldehydes (phthalaldehyde, isophthalaldehyde) with the corresponding amnios (1-methyl -1-phenylhydrazine, 1,1-diphenylhydrazine hydrochloride). Recrystallization of hydrazones from chloroform revealed the melting temperature within $142∼156^{\circ}C$. Photoluminescence(PL) analysis on each hydrazone showed that emission range were blue(458∼478 nm). The structure of obtained hydrazones were elucidated by FT-IR, $^1$H-NMR and C, H, N elemental analyzer.
정평진(Pyung Jin Chung),임회득(Hoi Deuk Lim) 한국화상학회 2001 한국화상학회지 Vol.7 No.1
This study was based on organic electroluminescence. Organic fluorescent materials of hydrazones according to condensation reaction was synthesized and characterized. Individual red, green, blue colored hydrazone derivatives were synthesized from the reaction of aldehydes (p-dimethylaminobenzaldehyde, p-diethylaminobenzaldehyde, terephthalaldehyde, isophthalaldehyde, and phthalaldehyde) with amines (4,4-diaminobenzophenone, 1-methyl-1-phenylhydrazine, and 1,1-diphalylhydraaine hydrochloride). The structure of obtained materials were elucidated FT-IR, ^1H-NMR and elemental analysis. Photoluminescence (PL) analysis showed that emission peaks were red (635nm), green (501~508nm), blue (458~478nm).ed to methanol was observed to be enough to lead to micron sized particles.