Fluorescence
“Fluorescence is a luminescence that is mostly found as an optical phenomenon in cold bodies, in which the molecular absorption of a photon triggers the emission of a photon with a longer (less energetic) wavelength, though a shorter wavelength emission is sometimes observed from multiple photon absorption. The energy difference between the absorbed and emitted photons ends up as molecular rotations, vibrations or heat. Sometimes the absorbed photon is in the ultraviolet range, and the emitted light is in the visible range, but this depends on the absorbance curve and Stokes shift of the particular fluorophore.” (Wikipedia 8/17/2009)
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 7,553,959 Fluorescent dye composition and target labeled therewith 6/9/2009 7,544,732 Modified fluororesin composition and modified fluororesin molded article 7,544,310 Fluorescent substance 7,544,309 Illumination system comprising a radiation source and a fluorescent material 5/12/2009 7,531,107 Aqueous solutions of fluorescent whitening agents 4/28/2009 7,524,974 Fluorescent probe
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. 8/21/2009 A water-soluble D–π–A chromophore based on dipicolinic acid: Synthesis, pH-dependent spectral properties and two-photon fluorescence cell imaging (334-338) Dyes and Pigments 83 #3 (2009) Characterization of monomeric and gemini cationic amphiphilic molecules by fluorescence intensity and anisotropy. Part 2 (396-402) Dyes and Pigments 83 #3 (2009) Fabrication of Photoswitchable and Thermotunable Multicolor Fluorescent Hybrid Silica Nanoparticles Coated with Dye-Labeled Poly(N-isopropylacrylamide) Brushes (3788–3798) Chemistry of Materials 21 #16 (2009) The synthesis and characterization of novel dipolar fluorescent materials based on a quinoxaline core (269-275) Dyes and Pigments 83 #3 (2009) A facile approach for cupric ion detection in aqueous media using polyethyleneimine/PMMA core–shell fluorescent nanoparticles # 365502 Nanotechnology 20 #36 (2009) Synthesis of imidazole-containing conjugated polymers bearing phenol unit as side group and excited state intramolecular proton transfer-mediated fluorescence (p 4822-4829) Journal of Polymer Science Part A: Polymer Chemistry 47 #18 (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
The term 'fluorescence' was coined by George Gabriel Stokes in his 1852 paper[1]; the name was given as a description of the essence of the mineral fluorite, composed of calcium fluoride, which gave a visible emission when illuminated with "invisible radiation" (UV radiation).” (Wikipedia 8/17/2009) **************************************************** 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.