Azo Dyes
Azo compounds make very good dyes. (RDC 8/1/2009) “As a consequence of п-delocalization, aryl azo compounds have vivid colors, especially reds, oranges, and yellows. Therefore, they are used as dyes, azo dyes for example Disperse Orange 1. Some azo compounds, eg. methyl orange, are used as acid-base indicators due to the different colors of their acid and salt forms. The development of azo dyes was an important step in the development of the chemical industry.” (Wikipedia 8/1/2009)
Recent US Patents
To go to the text version of the patent, click on US Patent Number Search and enter the patent number in the search box. 8/11/2009 7,572,559 Colorant-containing curable composition, color filter and manufacturing method thereof 7,572,301 Fibre-reactive dyes, their preparation and their use 7/14/2009 7,559,959 Bridged monoazo dyes 6/9/2009 7,544,217 Dye mixtures 4/21/2009 7,521,158 Negative dye-containing curable composition, color filter and method of producing the same 4/14/2009 7,517,368 Indolylthiazoliumazo dyes-containing colorants for keratin fibers 7,517,367 Cationic naphthyldiazo dyes and keratin fibers-coloring agents containing these dyes
Recent Journal Articles
To get to the abstract or article, copy the citation and paste it into favorite search engine (ex. Google). The date is the date the entry was found. 3/5/2010 Enzyme activities and decolourization of single and mixed azo dyes by the white-rot fungus Phanerochaete chrysosporium (146-150) International Biodeterioration & Biodegradation 64 #2 (2010) Controlling the Optical Properties of Hyperbranched Conjugated Polyazomethines through Terminal-Backbone Interactions (p 443-448) Macromolecular Rapid Communications 31 #5 (2010) Immobilized Redox Mediators on Anion Exchange Resins and Their Role on the Reductive Decolorization of Azo Dyes (1747–1753) Environmental Science & Technology 44 #5 (2010) 8/21/2009 The synthesis and properties of novel, functional azobenzene based metal complexes (291-296) Dyes and Pigments 83 #3 (2009) The synthesis, characterization, thermal and optical properties of copper, nickel, and vanadyl complexes derived from azo dyes (304-311) Dyes and Pigments 83 #3 (2009) The synthesis and structural study of two benzothiazolyl azo dyes: X-ray crystallographic and computational study of azo–hydrazone tautomerism (354-362) Dyes and Pigments 83 #3 (2009) 08/07/2009 Advanced Bioreduction of Commercially Important Azo Dyes: Modeling and Correlation with Electrochemical Characteristics (7054–7059) Industrial & Engineering Chemistry Research 48 #15 (2009) 7/31/2009 Synthesis and Photochromic Behavior of Azo-Polydiphenylsilanes (348-354) Journal of Inorganic and Organometallic Polymers and Materials 19 #2 (2008
Review Articles
To get to the abstract and the article, open up your internet search engine and copy the title to the search box. Once on the Journal's website, find the year and issue. Then scroll to the article. The date is the date of the entry made on this page.
Editor's Notes
As the literature is reviewed, and items of interest concerning this topic are found. These may be added in an abbreviated form with the reference. Readers and contributors are invited to add their own notes. Contributors may add them directly and other readers can simply send their notes to the editor, Roger Corneliussen at rcorneliussen@4spe.org. He may edit and add them to this page at his discretion.