Luminescence
“Luminescence is light that usually occurs at low temperatures, and is thus a form of cold body radiation. It can be caused by chemical reactions, electrical energy, subatomic motions, or stress on a crystal. This distinguishes luminescence from incandescence, which is light generated by high temperatures. Historically, radioactivity was thought of as a form of "radioluminescence", although it is today considered to be separate since it involves more than electromagnetic radiation.” (Wikipedia 8/2/2009) “The following are types of luminescence Bioluminescence, by a living organism Chemoluminescence, resulting of a chemical reaction Electrochemiluminescence, by an electrochemical reaction Crystalloluminescence, produced during crystallization Electroluminescence, in response to an electric current passed through it Cathodoluminescence, where beam of electrons impacts on a luminescent material such as a phosphor Mechanoluminescence, resulting from any mechanical action on a solid Triboluminescence, generated when bonds in a material are broken when that material is scratched, crushed, or rubbed Fractoluminescence, generated when bonds in certain crystals are broken by fractures Piezoluminescence, produced by the action of pressure on certain solids Photoluminescence, absorption of photons causing re-radiation of photons Phosphorescence, delayed re-radiation Fluorescence, where the emitted photons are of lower energy than those absorbed Radioluminescence, produced in a material by the bombardment of ionizing radiation Sonoluminescence, from imploding bubbles in a liquid when excited by sound Thermoluminescence, when absorbed light is re-emitted on heating.” (Wikipedia 8/2/2009)
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. 6/30/2009 7,553,558 Electroluminescent device containing an anthracene derivative 6/23/2009 7,550,207 Blue-emitting polymer and organic electroluminescent device using the same 6/9/2009 7,544,426 Luminescence device and display apparatus 7,544,425 Organic element for electroluminescent devices 4/21/2009 7,521,525 Blue luminescent polymer and organoelectroluminescent device using the same 4/14/2009 7,517,472 Blend of viscosity modifier and luminescent compound
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. 08/07/2009 PL and EL behavior of near-red luminescent metallopolymer easily prepared from phosphine-containing copolymer and chloro{bis(1-phenylisoquinolinato-N,C2 )}iridium(III), and its monomeric analog (p 4366-4378) Journal of Polymer Science Part A: Polymer Chemistry 47 #17 (2009) 7/24/2009 Poly(pyridinium salt)s with organic counterions derived from an aromatic diamine containing oxyethylene unit exhibiting amphotropic liquid-crystalline and photoluminescence properties (3128-3135) Polymer 50 #14 (2009) Influence of in-situ reaction on luminescent properties of samarium-complex/hydrogenated acrylonitrile-butadiene composites (3269-3274) Polymer 50 #14 (2009) Facile fabrication of novel Eu-containing copolymer and luminescent properties (p 1273-1278) Polymer Engineering & Science 49 #7 (2009)
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.