A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 499-40-1, Name is (2R,3S,4R,5R)-2,3,4,5-Tetrahydroxy-6-(((2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)hexanal, molecular formula is C12H22O11. In a Article£¬once mentioned of 499-40-1, category: Tetrahydropyrans
Diarylamino functionalized pyrene derivatives for use in blue OLEDs and complex formation
Three new 2,2?-dipyridylamino functionalized pyrene derivatives, 1-pyrenyl-2,2?-dipyridylamine (1), 4-(1-pyrenyl)phenyl-2,2?- dipyridylamine (2), and 4-[4?-(1-pyrenyl)biphenyl]-2,2?- dipyridylamine (3) have been synthesized and fully characterized. For comparison of electronic properties, a diphenylamino functionalized molecule 4-[4?-(1-pyrenyl)biphenyl]diphenylamine (4) has also been synthesized. Compounds 1-4 are bright blue emitters in solution and in the solid state with lambdamax at ?420-460 nm and a high emission efficiency in solution. All four compounds form amorphous glasses with Tg values of 66 C, 79 C, 165 C, and 98 C, respectively. The electronic properties of the four compounds were examined by spectroscopic methods, cyclic voltammetry and Gaussian 98 molecular orbital calculations. The utilities of this class of molecules in OLEDs have been demonstrated by EL devices of compounds 3 and 4, which showed that 3 can function as a bright blue emitter and an electron transport material in a double-layer device while 4 can function as a bright blue emitter and a hole transport molecule in a triple-layer device. The dipyridylamino functional group in molecules 1-3 are capable of chelating to metal ions such as Zn(II) as demonstrated by the synthesis and structure of the complex [2-(Zn(O2CCF3) 2]2 (5). The binding of Zn(II) ions to the dipyridyl group causes a reduction of the emission efficiency of the ligand 2.
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.category: Tetrahydropyrans, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 499-40-1, in my other articles.
Reference£º
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics