Thermoresponsive copolymers of ethylene oxide and N,N-diethyl glycidyl amine: polyether polyelectrolytes and PEGylated gold nanoparticle formation.
The synthesis of diblock as well as gradient copolymers of N,N-diethyl glycidyl amine (DEGA) with ethylene oxide (EO) via anionic ring-opening polymerization is presented. The polymers exhibit low polydispersities (≤1.13) and molecular weights in the range of 3300-10 200 g mol(-1) . In PEG-co-PDEGA copolymers, incorporation of 4%-29% DEGA results in tailorable cloud point temperatures in aqueous solution and melting points depending on DEGA content. mPEG-b-PDEGA block copolymers can be quaternized to generate cationic double-hydrophilic polyelectrolyte copolymers with polyether backbone. Furthermore, mPEG-b-PDEGA has been used as dual reducing and capping agent for gold nanoparticle synthesis.
Department of Organic Chemistry, Mainz, Germany.
Valerie S
VS
Reuss
Mathias
M
Werre
Holger
H
Frey
D000588:Amines / Q000737:chemistry*; D005027:Ethylene Oxide / Q000737:chemistry; D006046:Gold / Q000737:chemistry; D015394:Molecular Structure; D053758:Nanoparticles / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D058105:Polymerization; D011108:Polymers / Q000138:chemical synthesis* / Q000737:chemistry; D013696:Temperature
D000588:Amines; D011108:Polymers; D011092:Polyethylene Glycols; D006046:Gold; D005027:Ethylene Oxide