Macromolecular Chemistry and Physics
Copyright © 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Materials Science Weekly Newsletter
Recently Published Articles
- Improvement in Solubility and Molecular Assembly of Cyclopentadithiophene–Benzothiadiazole Polymer
Jungho Lee, Tomasz Marszalek, Kyu Cheol Lee, Jonggi Kim, Wojciech Pisula and Changduk Yang
Article first published online: 24 APR 2015 | DOI: 10.1002/macp.201500087
Use of the newly designed branched 5-ethylnonyl (5EN) chain provides a satisfactory processability to the PCDT-BT polymer without disrupting the π–π interactions, accompanied by an advantageous change in polymer self-assembly and backbone orientation, leading to a superior mobility, in comparison to that of the reference polymer.
- Clustering and Dissolution of Triazole Branched Poly(ethyl methylacrylate)
Jungju Ryu, Seo-Hyun Jung, Jae Hyun Sim, Hyung-il Lee and Daewon Sohn
Article first published online: 24 APR 2015 | DOI: 10.1002/macp.201400621
The temperature dependent clustering process and its gradual disruption are described as a result of time-dependent dissolution due to the chain relaxation, based on small angle neutron scattering and dynamic light scattering results. Specifically, the particular behavior of the synthesized polymer P1 is analyzed, which can be systematically controlled using temperature and time as simple triggers.
- Detrimental Effect of Silicon Nanoparticles on P3HT:PCBM-Based OPV Devices
Mejd Alsari, Yamila M. Omar, Manas K. Panda, Matteo Chiesa, Panče Naumov and Samuele Lilliu
Article first published online: 17 APR 2015 | DOI: 10.1002/macp.201500051
Power conversion efficiency(PCE) is measured for organic solar cells based on P3HT:PCBM blended with red fluorescent 2.85 nm silicon nanoparticles (Si-NPs) with different (P3HT:PCBM):Si-NP weight ratios (from 1:0 Ref. to 1:2). The PCE decreases as the amount of Si-NPs increases.
- A Sunlight-Induced Click Reaction as an Efficient Route to Cyclic Aliphatic Polyesters
Thomas Josse, Julien De Winter, Ozcan Altintas, Philippe Dubois, Christopher Barner-Kowollik, Pascal Gerbaux and Olivier Coulembier
Article first published online: 17 APR 2015 | DOI: 10.1002/macp.201500054
A sunlight-induced Diels–Alder reaction is demonstrated for the preparation of cyclic polyesters. Under highly divergent atmospheric conditions, cyclic polyesters of high purity are obtained by taking advantage of the natural UV irradiation from the sun. Both summer and winter conditions show impressive performances, allowing to extrapolate the reported protocol to almost any place on earth.
- Reduced In-Plane Swelling of Nafion by a Biaxial Modification Process
Steffen Hink, Dirk Henkensmeier, Jong Hyun Jang, Hyoung-Juhn Kim, Jonghee Han and Suk-Woo Nam
Article first published online: 17 APR 2015 | DOI: 10.1002/macp.201500063
A one-way shape memory effect is used to change the direction of water-induced membrane swelling from in-plane to through-plane. Because membranes are clamped between bipolar plates in a fuel cell, the shape memory effect is re-established when membranes dry. This prevents the membrane expanding and forming wrinkles, and therefore could significantly increase the lifetime of fuel cells.