Sorption of metal ions by poly(ethylene glycol)/β-CD hydrogels leads to gel-embedded metal nanoparticles

TY - JOUR

T1 - Sorption of metal ions by poly(ethylene glycol)/β-CD hydrogels leads to gel-embedded metal nanoparticles

AU - Ionita, G.

AU - Marinescu, G.

AU - Ilie, C.

AU - Anghel, D.F.

AU - Smith, D.K.

AU - Chechik, V.

PY - 2013/7/23

Y1 - 2013/7/23

N2 - Inorganic nanoparticles can be embedded within gels by selectively preloading them with suitable molecular precursors followed by reduction or another suitable reaction. Here, we exploit the selective sorption properties of cross-linked β-cyclodextrin/poly(ethylene glycol) hydrogels, in analogy with polyurethane foams, to preconcentrate metal salts (HAuCl and K[Co(SCN)]) and subsequently generate gel-embedded metal nanoparticles (10-50 nm). The nanoparticles are shown to be immobilized within the gel network as a consequence of their large dimensions in comparison to the gel network pore size. We suggest this is a useful approach for the generalized synthesis of hybrid soft-hard nanomaterials.

AB - Inorganic nanoparticles can be embedded within gels by selectively preloading them with suitable molecular precursors followed by reduction or another suitable reaction. Here, we exploit the selective sorption properties of cross-linked β-cyclodextrin/poly(ethylene glycol) hydrogels, in analogy with polyurethane foams, to preconcentrate metal salts (HAuCl and K[Co(SCN)]) and subsequently generate gel-embedded metal nanoparticles (10-50 nm). The nanoparticles are shown to be immobilized within the gel network as a consequence of their large dimensions in comparison to the gel network pore size. We suggest this is a useful approach for the generalized synthesis of hybrid soft-hard nanomaterials.

UR - http://www.scopus.com/inward/record.url?scp=84880628178&partnerID=8YFLogxK

U2 - 10.1021/la401541p

DO - 10.1021/la401541p

M3 - Article

AN - SCOPUS:84880628178

SN - 0743-7463

VL - 29

SP - 9173

EP - 9178

JO - Langmuir

JF - Langmuir

IS - 29

ER -