Perylene Dyes
Perylene dyes are based on perylene chromophores. (RDC 7/16/2009) “Perylene or perilene is a polycyclic aromatic hydrocarbon with the chemical formula C20H12, occurring as a brown solid. It or its derivatives may be carcinogenic, and it is considered to be a hazardous pollutant. In cell membrane cytochemistry, perylene is used as a fluorescent lipid probe.” (Wikipedia 7/16/2009) “Perylene displays blue fluorescence. It is used as a blue-emitting dopant material in OLEDs, either pure or substituted. Perylene can be also used as an organic photoconductor. It has an absorption maximum at 434nm, and as with all polycyclic aromatic compounds, low water solubility (1.2 x 10-5 mmol/l). Perylene has a molar extinction coefficient of 38,500 M-1cm-1 at 435.75 nm.” (Wikipedia 7/16/2009) “The perylene molecule consists of two naphthalene molecules connected by a carbon-carbon bond at the 1 and 8 positions on both molecules. All of the carbon atoms in perylene are sp2 hybridized. When drawing the structure of perylene, it is important not to represent the center ring as a fifth benzene ring. By doing so, this would cause two of the carbons to become sp3 hybridized causing part of the molecule to lose its aromaticity, and therefore its ability to fluoresce. The structure of perylene has been extensively studied by X-ray crystallography.” (Wikipedia 7/16/2009)
Recent US Patents
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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. 9/11/2009 Perylene dye photodegradation due to ketones and singlet oxygen (59-61) Dyes and Pigments 84 #1 (2010) 8/21/2009 Highly soluble perylene dyes: Synthesis, photophysical and electrochemical characterizations (297-303) Dyes and Pigments 83 #3 (2009) 7/10/2009 058[2009] Linear low density polyethylene (LLDPE) films containing perylene dyes as stress-strain luminescent indicators e-Polymers (7/3/2009) (84)
Review Articles
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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.