On the origin of absorbance band around 1700 cm−1 in FTIR spectra of hypercrosslinked polystyrene

Tsyurupa, M. P.; Borisov, Yu. А.; Blinnikova, Z. K.; Платонова, Н. П.; Ul’yanov, A. V.; Buryak, А. К.; Davankov, V. A.

doi:10.1134/s2070205114010225

Cited by 6 publications

(4 citation statements)

References 3 publications

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“…This works also suggests the existence of peaks that occur in the carbonyl region of the IR spectra are not due to the presence of carbonyl groups, but are likely the CvC stretching from substituted aromatic rings, which grow in intensity as a higher degree of substituted aromatic rings are formed with increasing amounts of FDA. These findings support recent work upon the assignment of these peaks in HCP networks, 62,63 and explains why the position of these peaks are dependent upon the monomer used to form the HCP. The small amount of mass lost from the polymers and the minimal levels of iron residues in the polymers as measured by TGA and XPS, respectively, indicate the discrepancies in the microanalysis data and greater than 100% yields are more a consequence of non-ideal network formation rather than the presence of contaminants in the polymer.…”

Section: Discussionsupporting

confidence: 78%

Swellable functional hypercrosslinked polymer networks for the uptake of chemical warfare agents

et al. 2017

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The need for porous materials to function as sorbents in order to allow for bulk uptake (and potential deactivation) of chemical warfare agent (CWA) stockpiles is of significant importance in the world today.Hypercrosslinked polymers (HCPs) represent a class of such sorbents being produced using the facile and tuneable so-called "knitting" procedure. Several HCPs are reported and their properties including apparent Brunauer-Emmett-Teller surface areas (SA BET ) and swellability (Q) against CWA simulants are examined using two reliable swelling methods which we have developed. The HCP derived from fluorobenzene showed the greatest potential for using such materials for CWA uptake and was tested against real agents including isopropyl methylphosphonofluoridate (sarin, GB) and bis(2-chloroethyl)sulfane (sulfur mustard, HD) revealing uptakes close to 20 mL g −1.

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Section: Discussionsupporting

confidence: 78%

Swellable functional hypercrosslinked polymer networks for the uptake of chemical warfare agents

et al. 2017

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“…Davankov (INEOS RAS, Moscow, Russia) utilizing different techniques in order to investigate their structure, porous characteristics, and morphology. Their characterization was previously described in detail in [15,19,21,22,[26][27][28]31,34].…”

Section: Characterization Of Hypercrosslinked Polystyrenesmentioning

confidence: 99%

“…In particular, structural mobility, surface chemistry, and swelling of HPSNs were investigated via the solid-state NMR, positron annihilation, FT-IR, XPS techniques, etc. Moreover, the three-dimensional structure of HPSNs was studied utilizing molecular dynamics simulations and the quantum chemical approach (Figure 2) [28][29][30]. Nonetheless, to date, to the best of our knowledge, a comprehensive study of the thermodynamics of liquid-phase adsorption across the entire range of crosslinking degrees (100-500%) and in various mobile phase compositions remains unaccomplished.…”

Section: Introductionmentioning

confidence: 99%

Thermodynamic Characteristics and Selectivity of the Liquid-Phase Adsorption of Aromatic Compounds on Hypercrosslinked Polystyrene Networks with Ultimate-High Crosslinking Densities by Data of Liquid Chromatography

Saifutdinov,

Buryak

2024

IJMS

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This study delves into the thermodynamics of liquid-phase adsorption on hypercrosslinked polystyrene networks (HPSNs), widely recognized for their distinct structure and properties. Despite the considerable progress in HPSN synthesis and characterization, gaps persist regarding the chromatographic retention mechanism, thermodynamics of adsorption, and their impact on the adsorption selectivity, especially in the case of networks with ultra-high crosslinking densities (up to 500%). Utilizing high-performance liquid chromatography (HPLC), we have explored, for the first time, the thermodynamic intricacies of liquid-phase adsorption onto HPSNs crosslinked in the entire range of the crosslinking degree from 100 to 500%. Our findings reveal the dependences of thermodynamic characteristics and selectivity of adsorption on the crosslinking degree, textural features, and liquid-phase composition in the region of extremely low adsorbent surface coverages (Henry’s range). We have detected that, in the case of HPSNs, the dependence of the thermodynamic characteristics of adsorption on the liquid-phase composition is different than for classical HPLC stationary phases. Moreover, we scrutinize the impact of the molecular structure of the studied aromatic compounds on the thermodynamic characteristics and selectivity of the liquid-phase adsorption on HPSNs. Investigating liquid-phase adsorption selectivity, we demonstrate the pivotal role of π-π interactions in separating aromatic compounds on HPSNs. Eventually, we unveil that the thermodynamic characteristics of adsorption peculiarly depend on the crosslinking degree due to the profound impact of the crosslinking on the electronic density in benzene rings in HPSNs, whereas the separation throughput peaks for the polymer with a 500% crosslinking degree, attributed to its exceptionally rigid network structure, moderate swelling and micropore volume, and minimum specific surface area.

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“…Polymer networks can potentially provide tunable material properties based on the chemical composition of the linker or tie chains involved, the density of cross‐link sites within the network of linkers, and whether the cross‐link site (i.e., the node) is passive or presents an active chemical moeity . Recently, networks based on cyclodextrin (CD) nodes have garnered attention for introducing non‐bonded tie points through polymer/CD inclusion chemistry .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of amphiphilic polymer networks with guest‐host properties

Hodge

Gyanwali

Villines

et al. 2015

J. Polym. Sci. Part A: Polym. Chem.

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A modular assembly procedure for producing amphiphilic polymer networks containing specific linker lengths between cyclodextrin (CD) cross-link sites is described. The linker type and length can be selected to tune the relative hydrophilicity/hydrophobicity of the network, and the size of the guest-host binding site can be varied by using either a-, b-, or c-CD as the node. The two-step, one-pot reaction sequence produces well-defined networks with stable ether linkages that can be purified by simple washing and filtration steps. Short ethylene glycol versus long polyethylene oxide linkers result in networks that are generally insoluble in common organic solvents, but which swell to varying degrees in polar protic, polar aprotic, and chlorinated solvents such as water, methanol, ethanol, dimethylsulfoxide, dimethylformamide, methylene chloride, and chloroform. All networks swell in water and present a hydrophobic CD cavity that is available for binding nonpolar molecules. The networks should be applicable to the removal of hydrophobic contaminants, for example, pharmaceutical molecules, from water or wastewater streams.

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On the origin of absorbance band around 1700 cm−1 in FTIR spectra of hypercrosslinked polystyrene

Cited by 6 publications

References 3 publications

Swellable functional hypercrosslinked polymer networks for the uptake of chemical warfare agents

Swellable functional hypercrosslinked polymer networks for the uptake of chemical warfare agents

Thermodynamic Characteristics and Selectivity of the Liquid-Phase Adsorption of Aromatic Compounds on Hypercrosslinked Polystyrene Networks with Ultimate-High Crosslinking Densities by Data of Liquid Chromatography

Synthesis of amphiphilic polymer networks with guest‐host properties

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