Addition Polymerization of Tricyclononene Containing Silatrane Groups

Alentiev, Dmitry A.; Dzhaparidze, D. M.; Bermeshev, Maxim V.

doi:10.1134/s1560090419060010

Cited by 2 publications

(3 citation statements)

References 28 publications

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“…[ 10,11 ] These two polymers and other polyacetylenes [ 12 ] have still the highest permeability values reported in literature up to now, but they are also characterized by poor permselectivities. A different performance behavior, characterized by high permeability values and sufficient permselectivities, is observed for more recently developed groups of polymers, which are characterized by an extremely high free volume like polymers of intrinsic microporosity (PIMs) [ 13,14 ] or addition‐polymerized poly(norbornenes) or poly(tricyclononenes) [ 15–19 ] with Si‐substituted bulky side groups. Like PIMs, the mentioned poly(norbornenes) bear also microporosity, which results from a rigid backbone and the bulky side group substituents.…”

Section: Introductionmentioning

confidence: 99%

“…Especially the latter structural units prevent an effective packing of segments in the condensed state leading to Brunauer/Emmett/Teller (BET) surface areas of several hundred m 2 /g. [ 18,19 ] A comparison of BET surface areas of microporous polynorbornenes and PIMs can be found in the literature. [ 20,21 ] The observed pore sizes are found to be between 0.5 nm and 2 nm, that is, micropores according to IUPAC classification.…”

Section: Introductionmentioning

confidence: 99%

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Molecular mobility in high‐performance polynorbornenes: A combined broadband dielectric, advanced calorimetry, and neutron scattering investigation*

Kolmangadi

Szymoniak

Zorn

et al. 2022

Polymer Engineering & Sci

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The molecular dynamics of two addition type polynorbornenes, exo‐PNBSi and PTCNSi1, bearing microporosity has been investigated by broadband dielectric spectroscopy, fast scanning calorimetry, and neutron scattering. Both polymers have the same side groups but different backbones. Due to their favorable transport properties, these polymers have potential applications in separation membranes for gases. It is established in literature that molecular fluctuations are important for the diffusion of small molecules through polymers. For exo‐PNBSi, two dielectric processes are observed, which are assigned to Maxwell/Wagner/Sillars (MWS) process due to blocking of charge carriers at internal voids or pore walls. For PTCNSi1, one MWS‐polarization process is found. This points to a bimodal pore‐size distribution for exo‐PNBSi. A glass transition for exo‐PNBSi and for PTCNSi1 could be evidenced for the first time using fast scanning calorimetry. For Tg and the corresponding apparent activation energy, higher values were found for PTCNSi1 compared to exo‐PNBSi. For both polymers, the neutron scattering data reveal one relaxation process. This process is mainly assigned to methyl group rotation probably overlayed by carbon–carbon torsional fluctuations.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Molecular mobility in high‐performance polynorbornenes: A combined broadband dielectric, advanced calorimetry, and neutron scattering investigation*

Kolmangadi

Szymoniak

Zorn

et al. 2022

Polymer Engineering & Sci

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“…There are practically no publications on the biological activity of silatrane-containing polymers. The few articles devoted to polymer silatranes [23][24][25][26][27] concern only the synthesis and study of the physical properties of these macromolecules. As far as we know, there is practically no literature on the surface of bioactive properties of silatrane-containing polymers.…”

Section: Introductionmentioning

confidence: 99%

Biodegradable and Biocompatible Silatrane Polymers

Istratov¹,

Васнев²,

Маркова³

2021

Molecules

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In this study, new biodegradable and biocompatible amphiphilic polymers were obtained by modifying the peripheral hydroxyl groups of branched polyethers and polyesters with organosilicon substituents. The structures of the synthesized polymers were confirmed by NMR and GPC. Organosilicon moieties of the polymers were formed by silatranes and trimethylsilyl blocks and displayed hydrophilic and hydrophobic properties, respectively. The effect of the ratio of hydrophilic to hydrophobic organosilicon structures on the surface activity and biological activity of macromolecules was studied, together with the effect on these activities of the macromolecules’ molecular weight and chemical structure. In particular, the critical micelle concentrations were determined, the effect of the structure of the polymers on their wetting with aqueous solutions on glass and parafilm was described, and the aggregation stability of emulsions was studied. Finally, the effect of the polymer structures on their antifungal activity and seed germination stimulation was examined.

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Addition Polymerization of Tricyclononene Containing Silatrane Groups

Cited by 2 publications

References 28 publications

Molecular mobility in high‐performance polynorbornenes: A combined broadband dielectric, advanced calorimetry, and neutron scattering investigation*

Molecular mobility in high‐performance polynorbornenes: A combined broadband dielectric, advanced calorimetry, and neutron scattering investigation*

Biodegradable and Biocompatible Silatrane Polymers

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