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Search for "pollutants" in Full Text gives 35 result(s) in Beilstein Journal of Organic Chemistry.
Bis(benzylamine) monomers: One-pot preparation and application in dendrimer scaffolds for removing pyrene from aqueous environments
Beilstein J. Org. Chem. 2013, 9, 2320–2327, doi:10.3762/bjoc.9.266
- composition. Keywords: amines; dendrimer; fluorescence studies; imines; pyrene; Introduction Highly-branched polymeric systems provide an attractive route for removing pollutants from water due to their interior cavities and their ease of formation [1]. While several promising approaches have been reported
- incorporate functional groups at precise locations, which may be ideal for removing specific pollutants. However, the use of dendrimers may be hindered without the development of new, more convenient approaches to prepare these systems with minimal purification [5]. Although several strategies offer solutions
- objective of the research disclosed is the development of a straightforward synthesis for novel dendrimers that can effectively remove small organic molecule pollutants from water. Furthermore, the ability to fine-tune the dendrimer easily is desired. The focus of this report is on three areas of progress
Damage of polyesters by the atmospheric free radical oxidant NO3•: a product study involving model systems
Beilstein J. Org. Chem. 2013, 9, 1907–1916, doi:10.3762/bjoc.9.225
- transformation processes at night. NO3•, which is formed through reaction of the atmospheric pollutants nitrogen dioxide, NO2•, with ozone, O3 (Scheme 1a) [7][8], reacts with organic compounds through various pathways, such as hydrogen abstraction (HAT) and addition to π systems. Most importantly, NO3• is one of
Self-assembly of 2,3-dihydroxycholestane steroids into supramolecular organogels as a soft template for the in-situ generation of silicate nanomaterials
Beilstein J. Org. Chem. 2013, 9, 1826–1836, doi:10.3762/bjoc.9.213
- of their unique properties and numerous potential applications in fields such as the stabilization of organic photochromatic materials, the templated synthesis of nanostructured and functional materials, the controlled release drugs systems, the capture of spilled pollutants in the environment
Space filling of β-cyclodextrin and β-cyclodextrin derivatives by volatile hydrophobic guests
Beilstein J. Org. Chem. 2013, 9, 1185–1191, doi:10.3762/bjoc.9.133
- delivery [18][19], extraction of pollutants from soil [20][21][22][23], homogenous catalysis [24], and microbial degradation [25] are limited by both its low aqueous solubility (1.8 wt % at 25°C) and its moderate complexing ability. Especially hydrophobic guests form channel inclusion compounds with β-CD
Cyclodextrin-based nanosponges as drug carriers
Beilstein J. Org. Chem. 2012, 8, 2091–2099, doi:10.3762/bjoc.8.235
- organic pollutants. For instance, p-chlorophenol was almost completely removed from waste water even at the parts per billion level [12]. However, no other applications were claimed or proposed. It was not until the work performed by Trotta and co-workers [13] and the syntheses of new kinds of
- cyclodextrins to form specific complexes with guest molecules, compared to native cyclodextrins. The included substances can be either strongly retained or released in a controlled manner. From an environmental standpoint this means that water pollutants, such as heavy metals and many organic molecules, can be
- and makes it possible to obtain an efficaciously supported catalyst to promote chemical reactions and aid the destruction of chemical pollutants (detergents, POPs abatement) as well as biosensors. Nanosponges can also be used in agriculture and have shown the interesting characteristic of
Influence of intramolecular hydrogen bonds on the binding potential of methylated β-cyclodextrin derivatives
Beilstein J. Org. Chem. 2012, 8, 1890–1895, doi:10.3762/bjoc.8.218
- the future help to design improved hosts based on β-CD for specific applications such as drug delivery [49], removal of pollutants [50][51][52][53], catalysis [54] or smart materials [55]. Experimental 4-tert-Butylbenzoic acid and adamantane-1-carboxylic acid and β-CD derivative 3 were purchased from
Cyclodextrin nanosponge-sensitized enantiodifferentiating photoisomerization of cyclooctene and 1,3-cyclooctadiene
Beilstein J. Org. Chem. 2012, 8, 1305–1311, doi:10.3762/bjoc.8.149
- substrates, including some pharmaceuticals [25], enzymes [26], pollutants [27], polymers [28], agrochemicals [29], and metal ions [30]. The complexation behavior of 1Z and 2ZZ with CDNSs was examined by means of circular dichroism spectroscopy, showing negative induced circular dichroism (ICD) at the 1La
Coupled chemo(enzymatic) reactions in continuous flow
Beilstein J. Org. Chem. 2011, 7, 1449–1467, doi:10.3762/bjoc.7.169
- technology is believed to be the main tool of synthetic biology, envisioning the creation of artificial cells with synthetic metabolic networks programmed to do a specific task, such as the treatment of diseases, the degradation of pollutants, or the synthesis of biofuels, and bulk and fine chemicals
Chiral gels derived from secondary ammonium salts of (1R,3S)-(+)-camphoric acid
Beilstein J. Org. Chem. 2010, 6, 848–858, doi:10.3762/bjoc.6.100
- removal of pollutants [25], catalysis [26], sensors [27], electrooptics/photonics [28], structure-directing agents [29][30] etc. The gelator molecules form SAFINs typically when a hot solution containing a small amount of gelator is cooled below a critical temperature (sol-gel temperature); the SAFINs
Synthesis of indolo[3,2-b]carbazole-based new colorimetric receptor for anions: A unique color change for fluoride ions
Beilstein J. Org. Chem. 2010, 6, No. 12, doi:10.3762/bjoc.6.12
- orange) observed. Keywords: anion binding; colorimetry; fluorescence quenching; fluoride binding; indolocarbazole; Introduction The design and synthesis of chromogenic receptors for biologically important and environmentally harmful anion pollutants has attracted considerable attention in
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