The single-molecule conductance of a series BN-acene-like derivatives has been measured by using scanning tunneling break-junction techniques. A strategic design the target molecules allowed us to include azaborine units in positions that unambiguously ensure electron transport through both heteroatoms, which is relevant for development customized BN-doped nanographenes. We show anthracene deri...

The mutagenic activities of benz(a)acridine, benz(c)acridine, and a number of their derivatives, including 12 epoxides and diol-epoxides, were examined in bacterial and mammalian cells to determine the importance of bay-region activation of azapolycyclic aromatic hydrocarbons. In Salmonella typhimurium strain TA98, the diastereomeric bay-region 3,4-diol-1,2-epoxides of benz(c)acridine, in which...

IR spectra of anthracene and pyrene derivatives, serving as models for isolated, linear and isolated, compact PAHs, respectively, have been calculated using ab-initio quantum mechanical methods. The separate and combined effects of ionization and multiple dehydrogenation have been studied. This study confirms and refines the trends of our preliminary paper on the smallest possible PAH, naphthal...

Fluorescent dyes with aggregation-induced emission (AIE) properties exhibit intensified emission upon aggregation. They are promising candidates to study biomolecules and cellular changes in aqueous environments when aggregation formation occurs. Here, we report a group of 9-position functionalized anthracene derivatives that were conveniently synthesized by the palladium-catalyzed Heck reactio...

The mutagenic activities of benz(a)acridine, benz(c)acridine, and a number of their derivatives, including 12 epoxides and diol-epoxides, were examined in bacterial and mammalian cells to determine the importance of bay-region activation of azapolycyclic aromatic hydrocarbons. In Salmonella typhimurium strain TA98, the diastereomeric bay-region 3,4-diol-1,2-epoxides of benz(c)acridine, in which...

Oil Shale One alternative source of energy is the extraction of the organic components of oil shale to yield oil and gas. shale deposits occur throughout the United States.. The release of the energy yielding organic fraction from oil shale has been brought about by retorting the oil shale at temperatures above 500° C and distillating the organic material. in the form of spent oil shale ash. A ...

A study was initiated to find compounds which have the capacity to induce high levels of activity of microsomal systems detoxifying polycycic hydrocarbons. Of a large number of chemicals and dietary constituents, only phenothiazine and several of its derivatives were found to be potent inducers of an increased benzpyrene hydroyxlase activity. These phenothiazines also protected rats against adr...

Microcystis and Anabaena are the main cyanobacteria that cause cyanobacterial blooms in Taihu Lake, China. The mechanism of population competition between M. aeruginosa and A. flos-aquae was studied by co-cultivation in the laboratory. The growth of M. aeruginosa was inhibited, while the growth of A. flos-aquae was promoted. The degree of inhibition or promotion was related to the ratio of the ...

phytoremediation is a sustainable and environment friendly remediation technique, the potential of which in removal of soil contaminants has been well documented. on the other hand the activity of earthworms helps improve soil conditions. hence, it is expected that in soil presence of earthworms can enhance the rate of phytoremediation as regards anthracene. the aim followed in this work was to...