We describe a method to track particles undergoing large displacements. Starting with a list of particle positions sampled at different time points, we assign particle identities by minimizing the sum across all particles of the trace of the square of the strain tensor. This method of tracking corresponds to
Discret and extended architectures based on an association of lanthanide ions with two derivatives of cinnamic acid (2-methoxycinnamic and 3-methoxycinnamic acids) have been synthesized and characterized by IR spectroscopy, elemental analyses, X-ray diffraction and magnetic measurements. The use of 2-methoxy
Four novel N-ethylcarbazole linked aza-BODIPY dyes (8a-b and 9a-b) were synthesized and characterized. The presence of N-ethylcarbazole moiety shifts their absorption and fluorescence spectra to the near-infrared region, ca. 650-730 nm, of electromagnetic spectra. These dyes possess strong molar absorptivity in the range of 3-4 x 104 M-1cm-1 with low fluorescence quantum yields. The triplet excited state as well as singlet oxygen generation of these dyes were enhanced upon iodination at the core position. The core iodinated dyes 9a-b showed excellent triplet quantum yield of ca. 90% and 75% with singlet oxygen generation efficiency of ca. 70% and 60% when compared to the parent dyes. The derivatives 8a-b showed dual absorption profiles in contrast to the dyes 9a-b, which has the characteristic absorption band of the aza-BODIPY dyes. DFT calculations revealed the electron density is spread over the iodine and dipyrromethene plane of, 9a-b, whereas in 8a-b the electron density distributed on carbazole ring ...
The incorporation of hydrophobic guest molecules into lipid membranes by the exchange of the guest molecule from a cyclodextrin (CDx) complex to a liposome is limited to guest molecules that can be included in CDxs. To solve this problem, large guest molecules were incorporated into liposomes by chemical rea
An overview of the synthesis and chemistry of acylborane compounds is presented. Acylboranes are a rare class of boron compounds, previously proposed as intermediates in several transformations and considered to be difficult to prepare. Methodologies for the preparation of acylborane compounds are based on b 2016 Hot Articles in Organic and Biomolecular Chemistry
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An effective palladium-catalyzed sequential carbonylation of olefins with formic acid is described. Ketones and the corresponding α,β-enones can be obtained with up to 90% yield. The reaction process is operationally simple and requires no toxic CO.