79926-89-9Relevant academic research and scientific papers
1-(arylalkenyl)pyrenes-synthetic, structural, photophysical, theoretical, and electrochemical investigations
Sharif, Muhammad,Reimann, Sebastian,Wittler, Kai,Knoepke, Leif R.,Surkus, Annette-E.,Roth, Christian,Villinger, Alexander,Ludwig, Ralf,Langer, Peter
, p. 5261 - 5271 (2011/11/12)
As a new approach for tuning the electronic properties of pyrene derivatives, we converted 1-bromopyrene into different substituted styrenes using the Mizoroki-Heck reaction. Several 1-(arylalkenyl)pyrenes have been characterized and their electronic properties studied by absorption and emission spectroscopy. The effect of the electronic ambience on the emission spectra of these compounds is discussed. Amongst the intramolecular influences, such as electron donating or withdrawing groups, other influences in the form of solvatochromatism are considered. Electrochemical oxidation potentials determined by DPV (differential pulse voltammetry) are discussed with regard to substituent effects. The fine structure of the absorbance spectra obtained from photophysical measurements is compared with theoretical calculations performed by time dependent B3LYP DFT (TD-DFT) methods using the 6-31G* basis set. In this context, we discuss the calculated potential energy surfaces and geometric structures with regard to the substitution pattern of the pyrenes.
Pyrene-ring-containing olefin compound, intermediate for synthesizing the olefin compound and method of synthesizing the olefin comopund
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, (2008/06/13)
A pyrene-ring-containing olefin compound of formula [I]: STR1 wherein R is a hydrogen atom, an unsubstituted or substituted alkyl group, or an unsubtituted or substituted aryl group; Y is an unsubstituted or substituted aliphatic hydrocarbon group, a cyclic hydrocarbon group, or an aromatic group; and n is an integer of 1 to 3, and when n is 1, Y and R may be bonded to form a ring; an intermediate for producing the above olefin compound, which is a phosphonic acid ester of formula [II]: STR2 wherein R1 is an alkyl group with 1 to 4 carbon atoms; and a method of producing the above olefin compound are disclosed.
SYNTHESIS OF DIARYLETHYLENES WITH CONDENSED RINGS BY THE WITTIG REACTION
Listvan, V. N.,Gonchar, G. V.,Rudenko, E. S.,Onishchenko, T. A.,Stasyuk, A. P.
, p. 1528 - 1533 (2007/10/02)
The Wittig reaction was used for the synthesis of diarylethylenes containing condensed naphthalene, anthracene, phenanthrene, and pyrene rings.Unlike 9-anthracenecarbaldehyde, which gives the trans isomers almost exclusively in the Wittig reaction with ar
