ated petroleum gases. The realization of this process allows avoiding problems with the condensation of hydrocarbons (i.e., to reduce the dew point) and pre-detonating coking in compressor engines. [4,5] The separated C 2+ fraction will be a valuable feed for further chemical processing, or it can be used as a fuel. For a successful solution of the abovementioned task, membranes that show solubilitycontrolled permeation (i.e., which are characterized by higher permeability of heavier components of a mixture) seem to be the most attractive. For a long time, it was believed that the solubility-controlled permeation is a feature of rubbery polymers. In particular, it took place for the most permeable rubber-polydimethylsiloxane, while for convenient glassy polymers the permeability of hydrocarbons usually reduces with the size of penetrants mole cules. [5,6] At the same time, the use of glassy polymers in this process could extend frames and conditions of its application owing to high glass transition temperatures, good mechanical properties, and the promising combination of membrane characteristics of glassy polymers (glassy polymers dominate the polymers near or on the upper bound in contrast to rubbery polymers [7] ). The discovery of glassy poly(trimethylsilylpropyne) (PTMSP) and other highly permeable polyacetylenes in the last decades of the twentieth century quite unexpectedly revealed that glassy polymers indeed could possess the solubility controlled gas permeation of hydrocarbons. [8,9] Later it was shown that some other glassy polymers with large free volume polymers of intrinsic microporosity (PIM's) [10,11] and addition polynorbornenes bearing Me 3 Si-side groups [12,13] ) also exhibited the solubility controlled permeation. The main reasons for this phenomenon were the nanoporous nature of these glassy polymers and the presence of large free volume. Unfortunately, the abovementioned nanoporous polymers have not found a practical application for separation of hydrocarbons mainly due to the significant aging over time. These materials, as well as polysiloxanes, are extremely permeable membranes, so higher permeable polymers are not apparently required. Therefore, the process of hydrocarbon separation would be improved if the separation selectivity and polymers stability could be enhanced. To overcome these problems, low free volume glassy polynorbornenes [14][15][16][17] and polyacetylenes [18][19][20] have been successfully developed. The solubility-controlled permeation of hydrocarbons in these polymers Addition Poly(alkylnorbornenes) Nanoporous glassy polymers are perspective materials for the fabrication of gas separation membranes, especially for the application of gaseous hydrocarbon separation. However, the drawback of such materials is the pronounced physical aging resulting in the dramatic drop of gas transport properties due to relaxation of high-free-volume fraction in time. Herein, a novel and readily available group of such glassy polymers is reported based on 5-alkylnorbornenes. These polym...
A straightforward and facile procedure for the fabrication of superhydrophobic luminescent 3D nanomaterials was developed. Chemical modification of ultra-lightweight highly porous nanostructured aluminum oxyhydroxide (NOA) monoliths in 8-hydroxyquinoline vapors resulted in the formation of tris(8-hydroxyquinoline)aluminum on the surface of NOA nanofibrils. The original shape and size of the initial NOA monolith and its internal 3D nanostructure were completely preserved during the modification. Surface modified NOA samples demonstrated intense green luminescence as well as superhydrophobicity, the water contact angle being ~153°.
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