excited triplet state
21Sulfur monoxide — is a chemical compound with formula sulfuroxygen and CAS number 13827 32 2. It is an unstable species only found in the gas phase where it is in equilibrium with a dimeric form, S2O2 (sometimes called disulfur dioxide) which can be represented as …
22List of Hund's rules — In atomic physics, Hund s rules refer to a simple set of rules used to determine which is the term symbol that corresponds to the ground state of a multi electron atom. They were proposed by Friedrich Hund. In chemistry, rule one is especially… …
23carbene — /kahr been/, n. the radical CH2 and its derivatives. [CARB + ENE] * * * ▪ chemistry Introduction any member of a class of highly reactive molecules containing divalent carbon atoms that is, carbon atoms that utilize only two of the four… …
24Mostafa El-Sayed — Born 8 May 1933 Zifta, Egypt Nationality Egyptian American Alma mater Ain Shams University Florida State University Occupation Chemical …
25Fluorescence correlation spectroscopy — (FCS) is a common technique used by physicists, chemists, and biologists to experimentally characterize the dynamics of fluorescent species (e.g. single fluorescent dye molecules in nanostructured materials, autofluorescent proteins in living… …
26Chemiluminescence — A chemoluminescent reaction carried out in an erlenmeyer flask producing a large amount of light. Chemiluminescence (sometimes chemoluminescence ) is the emission of light with limited emission of heat (luminescence), as the result of a chemical… …
27CIDNP — (Chemically Induced Dynamic Nuclear Polarization), often pronounced like kidnap , is a non Boltzmann nuclear spin state distribution produced in thermal or photochemical reactions, usually from colligation and diffusion, or disproportionation of… …
28Luminophore — A luminophore is an atom or atomic grouping in a chemical compound that manifests luminescence. There exist organic and inorganic luminophores. It should be stressed that the correct, textbook terminology is luminophore , not lumophore , although …
29Positronium — (Ps) is a system consisting of an electron and its anti particle, a positron, bound together into an exotic atom . Being unstable, the two particles annihilate each other to produce two gamma ray photons after an average lifetime of 125 ps or… …
30Oxygène singulet — L’oxygène singulet est la forme diamagnétique du dioxygène O2. Il s agit d un état métastable car excité de la molécule de dioxygène, dont l état fondamental, dit état triplet, est autrement paramagnétique. Il se forme notamment au cours de la… …
