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Upon ionization of the P4S3I2 molecule with Ag[Al(OR)4], a highly reactive sulfonium cation P4S3I+ is generated (NMR simulated and assigned). At -80 °C this cation reacts with additional P4S3I2 to give either an iodophosphonium P4S3I3+ cation (NMR simulate ...
Despite progress during the last decade, the behavior of charged macromolecules, polyelectrolytes, including their interactions is not yet completely understood. In particular, interactions with oppositely charged surfaces, which play a significant role in ...
Cyanine dyes with absorption edges of almost 1000 nm were used in combination with MEH-PPV for the fabrication of organic solar cells. For blended thin films, a pronounced phase separation between the two components occurred and resulted in photocurrents w ...
An alc. instead of an aldehyde was found to be an effective reaction partner in the three-component Passerini reaction (P-3CR) in the presence of o-iodoxybenzoic acid (IBX). Thus, by simply heating a soln. of an alc. R1CH2OH [R1 = n-Pr, Ph, PhCH2, AcO(CH2) ...
UMR 7139 CNRS, Universite Pierre et Marie Curie and Laboratoires Goemar, Station Biologique, Place Georges Teissier, F-29680 Roscoff, France. weinberg@sb-roscoff.fr Gametophytes of the marine alga Chondrus crispus are more resistant than tetrasporophytes t ...
Poly(vinylbenzylammonium chloride) (PVBAC) polyelectrolytes possessing defined chain lengths, narrow chain length distributions, uniform charge d., but substituents of different hydrophilicity and size at the quaternary ammonium group were used as model co ...
The cyanobacterial metabolite anachelin, postulated to serve as a biological ligand to Fe (siderophore), is composed of a fascinating blend of polyketide, peptide, and alkaloid building blocks. In particular, the latter consists of a N,N-dimethyltetrahydro ...
The Diels-Alder reaction between cyclopentadiene and methyl acrylate in ionic liquids has been studied in detail. The effect of contamination of the ionic liquids by common impurities, viz. sodium and chloride ions, and water, on the selectivity has been i ...
The mechanism and the thermodn. of the formation of EX2+, EX4+ and E2X5+ (E = As, P; X = Br, I) was carefully analyzed with MP2/TZVPP calcns. and inclusion of entropy and solvation effects (COSMO model approximating CH2Cl2). Thus, as likely intermediates t ...
