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Structures, Photoluminescence and Theoretical Studies of Two ZnII Complexes with Substituted 2-(2-Hydroxyphenyl)benzimidazoles

✍ Scribed by Yi-Ping Tong; Shao-Liang Zheng; Xiao-Ming Chen

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
205 KB
Volume
2005
Category
Article
ISSN
1434-1948

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✦ Synopsis

Abstract

Two new Zn^II^ complexes of 2‐(2‐hydroxyphenyl)benzimidazole (Hpbm), and 5‐amino‐2‐(1__H__‐benzoimidazol‐2‐yl)phenol (Hapbm), namely [Zn(pbm)~2~] (1), and [Zn(apbm)~2~]·C~2~H~5~OH·H~2~O (2), as well as the ligands themselves, have been prepared and characterized by X‐ray crystallography and photoluminescence studies. Both 1 and 2 are neutral, mononuclear molecules that display strong photoluminescence in the blue regionand thus may serve as candidates for blue‐light‐emitting electroluminescent materials. The electronic transitions in the photoluminescent processes have also been investigated by means of time‐dependent density functional theory (TDDFT) energy level and molecular orbitals analyses, which show that their absorption and luminescent properties are ligand‐based. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005)

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## Abstract A novel asymmetric monosubstituted 1,10‐phenanthroline, Hophen⋅0.5 H~2~O (1, Hophen=1__H__‐[1,10]phenanthrolin‐2‐one), was generated by a facile route, and a novel class of crystalline, d^10^‐metal, monomeric or oligomeric complexes of this ligand, namely [Hg(ophen)~2~]⋅4 H~2~O⋅CH~2~Cl~