نتایج جستجو برای: phosphorescence
تعداد نتایج: 1605 فیلتر نتایج به سال:
The unprecedented, purely gold(I) alkynyl-diphosphine clusters 1-3 demonstrate intense room-temperature phosphorescence with maximum quantum efficiency of 92% in solution (3) and 86% in solid (2) and thermally dependent emission in the crystalline form, attributed to the crystal lattice arrangement.
The rapid classification and identification of bacteria and bacterial spores by non-invasive means remains largely unsolved. U.V. fluorescence is becoming an accepted method for detecting the presence of biological aerosols. In other studies, auto fluorescence of bacteria has been shown to be useful in identifying bacteria in a medical application. Our present work attempts to build on this app...
Noureen Siraj,† Bilal El-Zahab,‡ Suzana Hamdan,† Tony E. Karam,† Louis H. Haber,† Min Li, Sayo O. Fakayode, Susmita Das, Bertha Valle, Robert M. Strongin, Gabor Patonay, Herman O. Sintim, Gary A. Baker, Aleeta Powe, Mark Lowry, Jan O. Karolin, Chris D. Geddes, and Isiah M. Warner*,† †Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, United States ‡Department of ...
PURPOSE To develop a noninvasive measurement of tear oxygen tension and to determine tear oxygen tension and calculated oxygen flux rates during wear of contact lenses of varying oxygen transmissibility (Dk/L). METHODS The basis of the tear oxygen tension (PO2) measurement is phosphorescence quenching of Pd-meso-tetra-(4-carboxyphenyl) porphine by oxygen. A fiber-optic bundle, positioned appr...
Artificial lighting currently consumes approximately one-fifth of global electricity production. Organic emitters with white persistent RTP have potential for applications in energy-efficient technologies, due to their ability harvest both singlet and triplet excitons. Compared heavy metal phosphorescent materials, they significant advantages cost, processability, reduced toxicity. Phosphoresce...
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