Swelling of Polymeric Resins in Organic Solvents Induced by Dialkyldithio-Containing Extractants

Abstract

The phenomenon of swelling resulting in volume transitions of cross-linked poly(4-vinylpyridine) and poly-(N,N-dimethylacrylamide) resins in organic solvents induced by bis(2-ethylhexyl)dithiophosphoric and bis-(2,4,4-trimethylpentyl)dithiophosphinic acids is demonstrated. Observed volume transitions in resins are explained by the dithioacid-polymer complexation analogous to the surfactant-polymer association in aqueous media.

Effect of quinone derivatives and sulfhydryl compounds on swelling of poly(4‐vinylpyridine) gels in organic solvents

“…minish the ability of the gels to absorb solvents, because the long-chain sulfhydryl compound com- plexed with the gel greatly enhances its ability to swell. 3,10 Gel swelling experiments (Fig. 2) confirm this hypothesis.…”

“…Diethyl-, On the other hand, it has been recently found that di(n-propyl)-, di(2-ethylhexyl)-, di(1,3-dimethinteraction of basic gels with surfactants bearing ylbutyl)-, and di(iso-propyl)phosphorodithioic acidic sulfhydryl functionality causes large, conacids of 83-95% purity were all obtained from tinuous volume transitions of gels in neat organic Zeneca, Inc. and were purified by flash chromatogsolvents. 3 Thus in the present article we aimed raphy on silica gel. Dimethyl-, dibenzyl-, and dinoat synergistic effects of quinone derivatives and nyl dithiophosphates were synthesized by resulfhydryl-containing compounds on the gel beacting methanol, phenol, and 1-nonanol, respechavior in nonaqueous systems.…”

Effects of Structural Variation in Conjugated Side Chains on the Photophysics of Conjugated Polymers in Nanoparticles

“…Other morphology changes that affect the emission profile of CPs include solvent swelling on polymer resins and polymer incorporation in hydro- and aero-gels . For example, the group of McNeill and co-workers has looked at the effects of solvent swelling on CP nanoparticles’ (CPNs) photophysical properties. , In the absence of organic solvents, CPNs act as a disordered glassy phase, whereas upon the addition of organic solvent, some segments of polymer order into a crystalline planar β-phase.…”

“…15,16 Moreover, the morphology of donor−acceptor polymers has significant additional effects on the emission profile, with polymers that are aggregated in thin films or nanoparticles generally having both decreased fluorescence emission and shifts in the emission maxima compared to the nonaggregated, well-solubilized polymer in solution. 17−20 Other morphology changes that affect the emission profile of CPs include solvent swelling on polymer resins 21 and polymer incorporation in hydro-and aero-gels. 22 For example, the group of McNeill and co-workers has looked at the effects of solvent swelling on CP nanoparticles' (CPNs) photophysical properties.…”

Synthesis and Characterization of Novel Materials for the Detection and Removal of Toxicants

“…92,93 Moreover, the morphology of donoracceptor polymers has significant additional effects on the emission profile, with polymers that are aggregated in thin films or nanoparticles generally having both decreased fluorescence emission and shifts in the emission maxima compared to the non-aggregated, well-solubilized polymer in solution. 94,95,96,97 Other morphology changes that affect the emission profile of CPs include solvent swelling on polymer resins 98 and polymer incorporation in hydro-and aero-gels. 99 For example, the group of Jason McNeill and co-workers has looked at the effects of solvent swelling on CP nanoparticles' (CPNs) photophysical properties.…”