Abstract
α,ω-Bis-4(vinylbenzyl) ethers of mono-, di-, tetra-, and hexa(ethylene glycol) were used as cross-linkers in polystyrene beads to examine the influence of glycol tether length and % incorporation upon polymer swelling and reagent diffusion. Swelling of 2, 10, and 20% cross-linked poly{styrene-co-[oligo(ethylene glycol) bis(4-vinylbenzyl)ether]} (PS-PEG) beads was determined to be higher or comparable to 2% cross-linked poly[styrene-co-divinylbenzene] (2% PS-DVB) beads. Fluorescence quenching of polymer-bound dansyl groups by Et3O·BF4 indicated that the most rapid intraresin diffusion of this electrophilic reagent occurred in toluene. PS-PEG beads exhibited faster quenching than 2% PS-DVB in poor swelling solvents but were slower to quench than 2% PS-DVB in toluene.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 5094-5099 |
| Number of pages | 6 |
| Journal | Journal of Organic Chemistry |
| Volume | 63 |
| Issue number | 15 |
| State | Published - Jul 24 1998 |
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ASJC Scopus subject areas
- Organic Chemistry
Cite this
Solvent and Reagent Accessibility within Oligo(ethylene glycol) Ether [PEG] Cross-Linked Polystyrene Beads. / Wilson, Mark E.; Paech, Kolja; Zhou, Wen Jing; Kurth, Mark J.
In: Journal of Organic Chemistry, Vol. 63, No. 15, 24.07.1998, p. 5094-5099.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Solvent and Reagent Accessibility within Oligo(ethylene glycol) Ether [PEG] Cross-Linked Polystyrene Beads
AU - Wilson, Mark E.
AU - Paech, Kolja
AU - Zhou, Wen Jing
AU - Kurth, Mark J.
PY - 1998/7/24
Y1 - 1998/7/24
N2 - α,ω-Bis-4(vinylbenzyl) ethers of mono-, di-, tetra-, and hexa(ethylene glycol) were used as cross-linkers in polystyrene beads to examine the influence of glycol tether length and % incorporation upon polymer swelling and reagent diffusion. Swelling of 2, 10, and 20% cross-linked poly{styrene-co-[oligo(ethylene glycol) bis(4-vinylbenzyl)ether]} (PS-PEG) beads was determined to be higher or comparable to 2% cross-linked poly[styrene-co-divinylbenzene] (2% PS-DVB) beads. Fluorescence quenching of polymer-bound dansyl groups by Et3O·BF4 indicated that the most rapid intraresin diffusion of this electrophilic reagent occurred in toluene. PS-PEG beads exhibited faster quenching than 2% PS-DVB in poor swelling solvents but were slower to quench than 2% PS-DVB in toluene.
AB - α,ω-Bis-4(vinylbenzyl) ethers of mono-, di-, tetra-, and hexa(ethylene glycol) were used as cross-linkers in polystyrene beads to examine the influence of glycol tether length and % incorporation upon polymer swelling and reagent diffusion. Swelling of 2, 10, and 20% cross-linked poly{styrene-co-[oligo(ethylene glycol) bis(4-vinylbenzyl)ether]} (PS-PEG) beads was determined to be higher or comparable to 2% cross-linked poly[styrene-co-divinylbenzene] (2% PS-DVB) beads. Fluorescence quenching of polymer-bound dansyl groups by Et3O·BF4 indicated that the most rapid intraresin diffusion of this electrophilic reagent occurred in toluene. PS-PEG beads exhibited faster quenching than 2% PS-DVB in poor swelling solvents but were slower to quench than 2% PS-DVB in toluene.
UR - http://www.scopus.com/inward/record.url?scp=0001685528&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001685528&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0001685528
VL - 63
SP - 5094
EP - 5099
JO - Journal of Organic Chemistry
JF - Journal of Organic Chemistry
SN - 0022-3263
IS - 15
ER -