7640-33-7Relevant academic research and scientific papers
Study on Relationship Between Fluorescence Properties and Structure of Substituted 8-Hydroxyquinoline Zinc Complexes
Jianbo, He,Tingting, Zhou,Yongjing, Cao,Yuanyuan, Zhang,Weiqing, Yang,Menglin, Ma
, p. 1121 - 1126 (2018/08/17)
Organic light-emitting diodes (OLEDs) produced from 8-hydroxyquinoline metal complexes play a vital role in modern electroluminescent devices. In this manuscript, a series of 8-hydroxyquinoline derivatives were synthesized by different methods and their corresponding zinc metal complexes were prepared. The UV and fluorescence properties of the complexes were measured aiming to understand the effect of substituents at the quinoline ring on the fluorescence properties of the complexes. When the C-5 of 8-hydroxyquinoline was replaced by halogen group, the fluorescence emission wavelengths had been red-shifted, at the same time, blue-shifted of fluorescence emission wavelength was observed when the C-5 position of 8-hydroxyquinoline was substituted by electron-withdrawing group. When the C-4 position of 8-hydroxyquinolie was substituted by methyl or the C-5 position was substituted by sulfonic acid group, the corresponding zinc complexes had higher fluorescence intensity than 8-hydroxyquinolie zinc.
Bromine-Lithium Exchange on Bromo-8-hydroxyquinolines via Formation of their Sodium Salts.
Mongin, Florence,Fourquez, Jean-Marie,Rault, Stephanie,Levacher, Vincent,Godard, Alain,et al.
, p. 8415 - 8418 (2007/10/02)
A short and versatile method is reported for the preparation of 8-hydroxyquinoline derivatives by reaction of n-butyllithium with 5,7-dibromo-8-hydroxyquinoline 2 and 7-bromo-8-hydroxyquinoline 1 as their sodium salts.Thus, bromine-lithium exchange reaction on compound 2, highly regioselective, gave after addition of various electrophiles, 5-substituted 7-bromo-8-hydroxyquinolines 4a-j in moderate to good yields.The same procedure was also applicable to 7-bromo-8-hydroxyquinoline 1 which led to 7-substituted 8-hydroxyquinolines 3a-b.
