16732-66-4Relevant articles and documents
ORGANOMETALLIC COMPOUND AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
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Paragraph 0251-0253, (2017/02/24)
An organometallic compound represented by Formula 1: wherein, in Formula 1, groups and variables are the same as described in the specification.
2-bromophenylhydrazine oxalate preparation method
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Paragraph 0032-0035, (2017/03/14)
The invention relates to a 2-bromophenylhydrazine oxalate preparation method. The method comprises the steps of diazotization, reduction, purification and salt formation. In the diazotization and reduction steps, a reaction liquid is kept strongly acidic with concentrated hydrochloric acid, such that smooth and complete reactions are ensured. In the reduction step, zinc powder-concentrated hydrochloric acid is adopted as a reducing agent for replacing sodium thiosulfate, sodium bisulfite, stannous chloride-hydrochloric acid and the like, such that reduction performance is good, yield is high, and reaction time is shortened. Impurities such as zinc hydroxide produced in the reaction are easy to remove, such that product impurity amount is low, and product purity is high. In the salt formation step, acetone is used for leaching, such that product purity is improved, and product appearance is ensured. The preparation method has the advantages of stable and reliable process, easy operation, and high product purity (product content is no lower than 99.2% as a result of high-performance liquid chromatography). A product yield is no lower than 42%. The method can completely satisfy market demands on 2-bromophenylhydrazine oxalate.
FLUORSCENT DYES WITH LARGE STOKES SHIFTS
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Paragraph 0081-0084, (2014/08/06)
Herein are disclosed fluorescent dyes based around a framework for a ligand comprising a pyridyl group linked to a diaryl anilido unit. A variety of ligands based on this framework are disclosed. The ligands chelate to a BF2 center to produce the fluorescent dye. The disclosed dyes combine longer Stokes shifts (approximately 100 nm) with increased quantum yields. They are also photostable in aqueous and organic solutions for several hours. These dyes may be used in the labeling of biomolecules for bioimaging and assays. Also disclosed are methods for the synthesis of these dyes.