TY - JOUR
T1 - Synthesis and metal coordination of thioether containing cyclo- and poly(organophosphazenes)
AU - Diefenbach, Ursula
AU - Cannon, Angela M.
AU - Stromburg, Brigitte E.
AU - Olmeijer, David L.
AU - Allcock, Harry R.
PY - 2000/10
Y1 - 2000/10
N2 - Several small molecule cyclotriphosphazenes and high polymeric poly(organophosphazenes) with methylthio groups (CH3SR) have been synthesized: [NP(OCH2CH2SCH3)2]n (n = 3, 1; n = 15,000, 5); [NP(OCH2CH2CH2CH2SCH3)2]n (n = 3, 2; n = 15,000, 6); [NP(OCH2CH2CH(SCH3)CH2CH2CH3)2]n (n = 3, 3; n = 15,000, 7); and [NP(OCH2C6H4SCH3)2]n (n = 3, 4; n = 15,000, 8). Both series of compounds possess multiple thioether coordination sites for potential binding to metals. The methylthioethoxide substituent readily oxidizes to the sulfoxide derivatives in the presence of peroxides. All the phosphazenes were characterized by 1H-, 13C-, and 31P-NMR spectroscopy and elemental analysis, and the small molecule cyclotriphosphazenes were examined by mass spectrometry. Gel permeation chromatography (GPC) and differential scanning calorimetry (DSC) were also employed to characterize the polymers. Metal complexation and extraction capabilities of both small molecule and polymeric systems are described.
AB - Several small molecule cyclotriphosphazenes and high polymeric poly(organophosphazenes) with methylthio groups (CH3SR) have been synthesized: [NP(OCH2CH2SCH3)2]n (n = 3, 1; n = 15,000, 5); [NP(OCH2CH2CH2CH2SCH3)2]n (n = 3, 2; n = 15,000, 6); [NP(OCH2CH2CH(SCH3)CH2CH2CH3)2]n (n = 3, 3; n = 15,000, 7); and [NP(OCH2C6H4SCH3)2]n (n = 3, 4; n = 15,000, 8). Both series of compounds possess multiple thioether coordination sites for potential binding to metals. The methylthioethoxide substituent readily oxidizes to the sulfoxide derivatives in the presence of peroxides. All the phosphazenes were characterized by 1H-, 13C-, and 31P-NMR spectroscopy and elemental analysis, and the small molecule cyclotriphosphazenes were examined by mass spectrometry. Gel permeation chromatography (GPC) and differential scanning calorimetry (DSC) were also employed to characterize the polymers. Metal complexation and extraction capabilities of both small molecule and polymeric systems are described.
UR - https://www.scopus.com/pages/publications/0034301469
UR - https://www.scopus.com/pages/publications/0034301469#tab=citedBy
U2 - 10.1002/1097-4628(20001017)78:3<650::AID-APP210>3.0.CO;2-0
DO - 10.1002/1097-4628(20001017)78:3<650::AID-APP210>3.0.CO;2-0
M3 - Article
AN - SCOPUS:0034301469
SN - 0021-8995
VL - 78
SP - 650
EP - 661
JO - Journal of Applied Polymer Science
JF - Journal of Applied Polymer Science
IS - 3
ER -