Montana, Juan-Sebastián; Roland, Sébastien; Richaud, Emmanuel; Miquelard-Garnier, Guillaume
From equilibrium lamellae to out-of-equilibrium cylinders in triblock copolymer nanolayers obtained via multilayer coextrusion
Multilayer coextrusion was used to obtain nanolayered films of self-assembled commercial triblock copolymer poly(methyl methacrylate-b-butyl acrylate-b-methyl methacrylate) (MAM) confined by poly(methyl methacrylate) (PMMA). The MAM layer thickness was varied from 30 nm to 500 nm (i.e. roughly 1 to 15–20 nanodomains) by changing either the number of multiplying elements or the chill…
D–A1–D–A2 Copolymer Based on Pyridine-Capped Diketopyrrolopyrrole with Fluorinated Benzothiadiazole for High-Performance Ambipolar Organic Thin-Film Transistors
Li, Ping; Xu, Long; Shen, Hongguang; Duan, Xianming; Zhang, Jianqi; Wei, Zhixiang; Yi, Zhengran; Di, Chong-an; Wang, Shuai
A novel donor–acceptor–donor–acceptor (D–A1–D–A2) π-conjugated copolymer (PDBPyDT2FBT) has been prepared by Stille coupling reaction. It is found that PDBPyDT2FBT exhibits low LUMO energy level mainly because of multiple electron-deficient units and donor–acceptor interaction, which is favorable to obtain more efficient electron injection and transport in organic thin-film transistors (OTFTs).…
Expanded graphite as an agent towards controlling the dispersion of carbon black in poly (styrene –co-butadiene) matrix: An effective strategy towards the development of high performance multifunctional composite
Mondal, Titash; Bhowmick, Anil K.; Ghosal, Ranjan; Mukhopadhyay, Rabindra
Controlling dispersion and networking of particulate fillers in a polymer matrix is critical towards the development of high performance polymer composite. However, fabricating such a methodology at a large scale is challenging. Herein, we report an effective strategy, by which the dispersion, structure and networking behavior of a particulate filler…
Equilibrium Crystallization Temperature of Syndiotactic Polystyrene γ Form
Wang, Hai; Wu, Chun-Ji; Cui, Dong-Mei; Men, Yong-Feng
The crystallization behavior of syndiotactic polystyrene (sPS) γ form undergoing annealing at various temperatures was investigated using the thermodynamic phase diagram based on Strobl’s crystallization theory. On the basis of the differential scanning calorimetric results, it was observed that γ form melt-recrystallization occurred at a higher temperature with the increasing…
Enhanced lithium storage performance of hierarchical CuO nanomaterials with surface fractal characteristics
Li, Ang; He, Renyue; Bian, Zhuo; Song, Huaihe; Chen, Xiaohong; Zhou, Jisheng
Self-assembled hierarchical CuO nanostructures with fractal structures were prepared by a mild method and exhibited excellent lithium storage properties, certain of which even demonstrated a high reversible capacity of 827 mAh g−1 at a rate of 0.1 C. An interesting phenomenon was observed that the electrochemical performance varies along with the structure complexity,…
DMPC vesicle structure and dynamics in the presence of low amounts of the saponin aescin
Sreij, Ramsia; Dargel, Carina; Geisler, Philippe; Hertle, Yvonne; Radulescu, Aurel; Pasini, Stefano; Perez, Javier; Moleiro, Lara H.; Hellweg, Thomas
Vesicle shape and bilayer parameters are studied by small-angle X-ray (SAXS) and small-angle neutron (SANS) scattering in the presence of the saponin aescin. We confirm successful incorporation of aescin molecules by analysis of the radii of gyration RG and study furthermore the impact of aescin incorporation on bilayer thickness parameters…
Determination of the packing model of a supramolecular nanofiber via mass-per-length measurement and de novo simulation
Yao, Qingxin; Bao, Qiang; Li, Xinming; Wang, Hui; Yang, Zhenyu; Shi, Xinghua; Gao, Yuan; Xu, Bing
Herein, we report an example of using scanning transmission electron microscopy to determine the mass-per-length of supramolecular nanofibers. Together with the measurement of the diameter of nanofibers via transmission electron microscopy, we could estimate the packing density of assembling molecules along the nanofibers. A parallel unbiased de novo simulation screens…
Covalently bonded multimers of Au25(SBut)18 as a conjugated system
Sels, Annelies; Salassa, Giovanni; Cousin, Fabrice; Lee, Lay-Theng; Bürgi, Thomas
Aromatic dithiol linkers were used to prepare aggregates of Au25(SR)18 clusters (SR: thiolate) via ligand exchange reactions. Fractions of different aggregate sizes were separated by size exclusion chromatography (SEC). The aggregates were characterized by UV-vis absorption spectroscopy, matrix assisted laser desorption ionization (MALDI) mass spectrometry, nuclear magnetic resonance (NMR)…
Creating cross-linked lamellar block copolymer supporting layers for biomimetic membranes
Lang, Chao; Shen, Yue-xiao; LaNasa, Jacob A.; Ye, Dan; Song, Woochul; Zimudzi, Tawanda J.; Hickner, Michael A.; Gomez, Enrique D.; Gomez, Esther W.; Kumar, Manish; Hickey, Robert J.
The long-standing goal in membrane development is creating materials with superior transport properties, including both high flux and high selectivity. These properties are common in biological membranes, and thus mimicking nature is a promising strategy towards improved membrane design. In previous studies, we have shown that artificial water channels can…
Configuration of the magnetosome chain: a natural magnetic nanoarchitecture
Orue, I.; Marcano, L.; Bender, P.; García-Prieto, A.; Valencia, S.; A. Mawass, M.; Gil-Cartón, D.; Venero, D. Alba; Honecker, D.; García-Arribas, A.; Barquín, L. Fernández; Muela, A.; L. Fdez-Gubieda, M.
Nanoscale, 2018, vol 10, 16, pp. 7407-7419DOI:10.1039/C7NR08493EVisit the full articleBack to the overview