title: Zinc complex based on 2-(5-methyl-2-hydroxyphenyl)benzotriazole: synthesis and electroluminescence characteristics.
abstract: Zinc (II) [2-(5-methyl-2-hydroxyphenyl)benzotriazole] (Zn(MHB)2) was synthesized and characterized by FT-NMR, FT-IR, UV-Vis, XPS and elemental analysis. The photoluminescence of Zn(MHB)2 was measured at 516 nm from the DMF solution. The HOMO (6.6 eV) and LUMO (3.1 eV) energy levels of Zn(MHB)2 were estimated from the measurement of cyclic voltammetry. The devices with structure of ITO/NPB/Zn(MHB)2/Alq3/LiF/Al were constructed to investigate their electroluminescent (EL) performance. Zn(MHB)2 was found to be a good hole-blocking material in the EL devices.
authors.affiliation: Department of Chemistry and Institute of Functional Materials, Inje University, 621-749 Gimhae, Korea.
authors.forename: Jeong-Keun
authors.initials: JK
authors.lastname: Park
authors.forename: Dong-Eun
authors.initials: DE
authors.lastname: Kim
authors.forename: Trinh Dac
authors.initials: TD
authors.lastname: Hoanh
authors.forename: Young-Soo
authors.initials: YS
authors.lastname: Kwon
authors.forename: Burm-Jong
authors.initials: BJ
authors.lastname: Lee