Supporting Information For On the Two-step Phase Transition Behavior of the Poly(N-isopropylacryamide) (PNIPAM) Brush: Different Zones with Different Orders
نویسندگان
چکیده
Materials Tris[2-(dimethylamino)ethyl]amine (Me6TREN) was prepared as described in the literature. Oligo (ethylene glycol) methacrylate with an average Mn of 500 g/mol (OEGMA-OH) was purchased from Sigma-Aldrich and filtered through basic alumina to remove stabilizers. N-Isopropylacrylamide (NIPAM) was recrystallized from cyclohexane before use. Cuprous bromide (CuBr) and cuprous chloride (CuCl) were purified by washing several times by methanol. Methanol, dichloromethane, isopropanol (IPA), and diethyl ether were purified by distillation. Unless otherwise specified, all other chemicals were used as received.
منابع مشابه
Phase transition behavior of unimolecular micelles with thermoresponsive poly(N-isopropylacrylamide) coronas.
This paper describes the double phase transition behavior of a thermoresponsive poly(N-isopropylacrylamide) (PNIPAM) brush at the surface of a hydrophobic core. Reversible addition-fragmentation transfer (RAFT) polymerization of N-isopropylacrylamide (NIPAM) was conducted by using a hyperbranched polyester (Boltorn H40) based macroRAFT agent. The resultant multiarm star block copolymer (H40-PNI...
متن کاملToward the dynamic phase transition mechanism of a thermoresponsive ionic liquid in the presence of different thermoresponsive polymers.
The influence of two thermoresponsive polymers, poly(N-isopropylacrylamide) (PNIPAM) and poly(N-vinylcaprolactam) (PVCL), on the phase transition behavior of a thermoresponsive ionic liquid, tributylhexylphosphonium 3-sulfopropylmethacrylate ([P4,4,4,6][MC3S]), was investigated. An obvious distinction was observed in the LCSTs and morphologies of [P4,4,4,6][MC3S]-PNIPAM and [P4,4,4,6][MC3S]-PVC...
متن کاملCo-nonsolvency of PNiPAM at the transition between solvation mechanisms.
We investigate the co-nonsolvency of poly-N-isopropyl acrylamide (PNiPAM) in different water-alcohol mixtures and show that this phenomenon is due to two distinct solvation contributions governing the phase behavior of PNiPAM in the water-rich and alcohol-rich regime respectively. While hydrophobic hydration is the predominant contribution governing the phase behavior of PNiPAM in the water-ric...
متن کاملConcentration dependent effects of urea binding to poly(N-isopropylacrylamide) brushes: a combined experimental and numerical study.
The binding effects of osmolytes on the conformational behavior of grafted polymers are studied in this work. In particular, we focus on the interactions between urea and poly(N-isopropylacrylamide) (PNIPAM) brushes by monitoring the ellipsometric brush thickness for varying urea concentrations over a broad temperature range. The interpretation of the obtained data is supported by atomistic mol...
متن کاملMulticore-shell PNIPAm-co-PEGMa microcapsules for cell encapsulation.
The overall goal of this study was to fabricate multifunctional core-shell microcapsules with biological cells encapsulated within the polymer shell. Biocompatible temperature responsive microcapsules comprised of silicone oil droplets (multicores) and yeast cells embedded in a polymer matrix (shell) were prepared using a novel microarray approach. The cross-linked polymer shell and silicone mu...
متن کامل