نتایج جستجو برای: organic precursors
تعداد نتایج: 238888 فیلتر نتایج به سال:
This paper reviews the current state of the art related to the synthesis and characterization of hybrid organic-inorganic (O/I) coatings obtained through the exploitation of dual-cure processes, which involve a photo-induced polymerization followed by a thermal treatment: this latter allows the occurrence of sol-gel reactions of suitable alkoxy precursors already embedded in the UV-curable syst...
humic substances (hS) constitute a large part of organic matter found in aquatic environment. the hS strongly interact with both inorganic and organic pollutants. Occurrence of the hS in groundwater accounts for many problems with treatment procedures. these natural components cause an increased intensity of water colour, affect its taste and odour, hinder removal of iron, manganese and other m...
Activated carbon appended with organic groups was obtained by a grafting technique using a one-step reaction with diazonium salts. Using the organic aryl amines of 4-bromo aniline and 4-aminoantipyrine as precursors for the corresponding functional diazonium reagents, the bromobenzene and antipyrine molecules were bonded to the surface of carbon. The modified activated carbon was characterized ...
Emissions from gasoline and diesel vehicles are predominant anthropogenic sources of reactive gas-phase organic carbon and key precursors to secondary organic aerosol (SOA) in urban areas. Their relative importance for aerosol formation is a controversial issue with implications for air quality control policy and public health. We characterize the chemical composition, mass distribution, and or...
In the field of organosulfur chemistry, sulfenylating agents are an important key in C–S bond formation strategies. Among various precursors, N -sulfenylsuccinimide/phthalimide derivatives have shown highly electrophilic reactivity for asymmetric synthesis many organic compounds. Hence, this review article, we focus on application these alternative reagents transformations.
Organosulfate species have recently gained attention for their potentially significant contribution to secondary organic aerosol (SOA); however, their temporal behavior in the ambient atmosphere has not been probed in detail. In this work, organosulfates derived from isoprene were observed in single particle mass spectra in Atlanta, GA during the 2002 Aerosol Nucleation and Characterization Exp...
Recently, hybrid (organic–inorganic) metal halide perovskites have gained significant attention due to their excellent performance in optoelectronics and photovoltaics (PV). Single-junction PV cells made from these materials achieved record efficiencies of over 25%, with the potential for further improvement future. The crystal structure organohalide perovskite semiconductors plays a crucial ro...
The large amount of unstable species in the realm interstellar chemistry drives an urgent need to develop efficient methods for situ generations molecules that enable their spectroscopic characterizations. Such laboratory experiments are fundamental decode molecular universe by matching and terrestrial spectra. We propose approach based on laser ablation nonvolatile solid organic precursors. ge...
Organosulfates are important secondary organic aerosol (SOA) components and good tracers for aerosol heterogeneous reactions. However, the knowledge of their spatial distribution, formation conditions, and environmental impact is limited. In this study, we report two organosulfates, an isoprene-derived isoprene epoxydiols (IEPOX) (2,3-epoxy-2-methyl-1,4-butanediol) sulfate and a glycolic acid (...
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