79926-89-9Relevant articles and documents
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.
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
