Macromolecular Chemistry and Physics
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Materials Science Weekly Newsletter
Recently Published Articles
- Well-Defined Glycopolymers via RAFT Polymerization: Stabilization of Gold Nanoparticles
Marta Álvarez-Paino, Vanesa Bordegé, Rocío Cuervo-Rodríguez, Alexandra Muñoz-Bonilla and Marta Fernández-García
Article first published online: 20 AUG 2014 | DOI: 10.1002/macp.201400306
Colloidal stable glyco-nanoparticles are obtained by anchoring well-defined glycopolymers synthesized via the reversible addition–fragmentation chain transfer (RAFT) process onto gold nanoparticles. The binding ability of these glyco-nanoparticles with Concanavalin A lectin produces a shift in the plasmon resonance band of the gold nanoparticles as a consequence of the changes in the environment.
- Coil-to-Globule Transition of Poly(N-isopropylacrylamide) in Aqueous Solution: Kinetics in Bulk and Nanopores
Reza Farasat and Sergey Vyazovkin
Article first published online: 20 AUG 2014 | DOI: 10.1002/macp.201400354
The coil-to-globule transition in poly(N-isopropylacrylamide) (PNIPAM) solution can be described by the classical nucleation model, whose parameters are determined from DSC runs. The use of the model reveals that an increase in the transition temperature due to dilution and nanoconfinement is caused by different reasons, which, respectively, are an increase in the free-energy barrier and a decrease in the pre-exponential factor.
- Poly(ε-caprolactone) and Pluronic Diol-Containing Segmented Polyurethanes for Shape Memory Performance
Katalin Czifrák, József Karger-Kocsis, Lajos Daróczi, Miklós Zsuga and Sándor Kéki
Article first published online: 19 AUG 2014 | DOI: 10.1002/macp.201400237
New high-molecular-weight poly(ε-caprolactone)-based linear and crosslinked segmented polyurethanes (PUs) with shape memory properties are synthesized by block copolymerization. The PU composition (hard–soft segment content) strongly influences the mechanical performance. According to dynamical mechanical analysis (DMA) investigations, the newly synthesized PUs may be applicable as Tm-based shape memory polymers.
- One-Step Preparation of Reduction-Responsive Biodegradable Polymers as Efficient Intracellular Drug Delivery Platforms
Tongjiang Cai, Yangjun Chen, Yin Wang, Haibo Wang, Xiangsheng Liu, Qiao Jin, Seema Agarwal and Jian Ji
Article first published online: 19 AUG 2014 | DOI: 10.1002/macp.201400311
2-Methylene-1,3-dioxepane (MDO)-based reduction-responsive amphiphilic copolymers are synthesized via one-step radical polymerization. The copolymers can self-assemble to micelles, which are investigated for intracellular glutathione-triggered doxorubicin (DOX) release.
- Nanomaterial with Variable d-Spacing Prepared from Self-Assembly of Cleavable Triblock Polystyrene-(S2)Poly(tert-butyl acrylate)–Polystyrene
Ruixue Chang and Jianglei Qin
Article first published online: 19 AUG 2014 | DOI: 10.1002/macp.201400283
Nanomaterial with variable d-spacing regulated like an accordion is prepared from disulfide-containing (PS–(S2)PtBA–PS) triblock copolymer with lamellar morphology. The accordion-like material can be used as a template to prepare layered inorganic/organic composite or be cleaved to prepare dispersed nanoplates.