Results 61 to 70 of about 71,335 (344)

Design of Efficient and Mechanically Robust Anion Exchange Membrane for Water Electrolysis Achieved by Chemically Crosslinked Elastomers using Polyfluorene‐Based Conjugated Polymers

Advanced Functional Materials, EarlyView.
High‐performance SEBS‐PFB AEM is developed by crosslinking SEBS‐amine with polyfluorene‐based crosslinker containing benzene spacer. With the superior electrochemical and mechanical properties, SEBS‐PFB enabled an AEMWE single cell to achieve a high current density of 14.0 A cm−2 at 2.0 V and 80 °C in 1 m KOH, using a PtRu/C cathode and Ni2Fe anode ...
Hyun Soo Kwon, Jaeho Byeon, Chulhee Lim, Jinseok Park, Jaejoon Lee, Jaeyoung Choi, Tae Hoon Kim, Jinwoo Lee, Bumjoon J. Kim   +8 more
wiley   +1 more source

Photo‐Switching Thermal and Lithium‐Ion Conductivity in Azobenzene Polymers

Advanced Functional Materials, EarlyView.
Light‐responsive azobenzene polymers control thermal and ionic transport simultaneously through structural transitions. UV illumination disrupts π–π stacking, converting crystalline trans states to amorphous cis configurations. Thermal conductivity drops from 0.45 to 0.15 W·m−1·K−1 while Li+ diffusivity increases 100 fold. This dual transport switching
Jaeuk Sung, Jungwoo Shin, Qiujie Zhao, Minjee Kang, Christopher Evans, Cecilia Leal, Paul V. Braun, David G. Cahill   +7 more
wiley   +1 more source

Polysaccharides From Fermented Cordyceps Mycelium: In‐Depth Structural Characterization by Partial Acid Hydrolysis, Methylation and NMR Spectroscopy

Food Frontiers
Polysaccharide is considered as one of the main bioactive constituents in Cordyceps sinensis (C. sinensis), one of the well‐known traditional Chinese medicines.
Junqiao Wang, Chunjuan Fan, Shuping Chen, Shaoping Nie   +3 more
doaj   +1 more source

Water Influence in Poly(epichlorohydrin) Synthesis: An intermediate to Energetic Propellants

Journal of Aerospace Technology and Management, 2012
Poly(epichlorohydrin) was synthesized using anhydrous and hydrate stannic chloride, separately, as initiator. Reactions were conducted in the presence of a diol at 70o C.
Jairo Sciamareli, Silvana Navarro Cassu, Koshun Iha   +2 more
doaj   +1 more source

Transferrin-polycation conjugates as carriers for DNA uptake into cells. [PDF]

, 1990
We have developed a high-efficiency nucleic acid delivery system that uses receptor-mediated endocytosis to carry DNA macromolecules into cells. We accomplished this by conjugating the iron-transport protein transferrin to polycations that bind nucleic ...
Beug, Hartmut, Birnstiel, Max L., Cotten, Matt, Wagner, Ernst, Zenke, Martin   +4 more
core   +1 more source

Reinforced Concrete‐Inspired Multiscale Hierarchical Metamaterial Composite for Synergistic Enhancement Across Thermal, Electromagnetic, and Mechanical Domains

Advanced Functional Materials, EarlyView.
A structurally integrated multiscale hierarchical metamaterial composite (MHMC), inspired by the synergistic architecture of reinforced concrete, achieves simultaneous enhancement of thermal, electromagnetic, and mechanical functionalities. By combining a carbon black‐based mechanical metamaterial with a porosity‐graded cellulose acetate aerogel, this ...
Jeongwoo Lee, Junyeol Choi, Junyong Seo, Jaemin Lee, Dowon Noh, Hoyoung Jang, Hwanju Lim, Jinwoo Park, Run Hu, Wonjoon Choi   +9 more
wiley   +1 more source

Determination of steroid estrogens in wastewater by high performance liquid chromatography-tandem mass spectrometry [PDF]

, 2007
This paper discusses the requirement for, and presents an analytical procedure for, the determination of four unconjugated steroid hormones and a conjugated steroid (estrone-3-sulfate) in wastewaters.
A. Boobis, Belfroid, Benijts, Benijts, Bones, Bowers, Cargouet, Croley, Desbrow, D’Ascenzo, E. Cartmell, Gentili, Gomes, Gomes, Hu, Huang, Ingrand, Isobe, J.N. Lester, Johnson, Johnson, Komori, Kramer, Kuch, Lagana, Lagana, Lai, Larsson, Lee, Lee, Liang, Lopez de Alda, Lopez de Alda, M.D. Scrimshaw, Petrovic, Purdom, Quintana, Reddy, Rodgers-Gray, Rodriguez-Mozaz, Rodriguez-Mozaz, Routledge, Salvador, Shishida, Shore, Snyder, Snyder, T.Y. Chiu, Tabak, Tang, Ternes, Ternes, Vieno, Y.K.K. Koh   +53 more
core   +1 more source

4D Printing of Self‐Immolative Polymers

Advanced Functional Materials, EarlyView.
The integration of self‐immolative polymers (SIPs) into light‐based 3D printed structures is presented as a new “living” 4D printing strategy. By exploiting their metastability and stimuli‐responsiveness, SIP‐containing printed objects can undergo rapid and triggered degrowth under ambient conditions and subsequent regrowth through polymer ...
Johannes Markhart, Philipp Mainik, Pia S. Klee, Eva Blasco   +3 more
wiley   +1 more source

Ring-opening copolymerization of (R,S)-β-butyrolactone and ε-caprolactone using sodium hydride as initiator

eXPRESS Polymer Letters, 2010
Copolymers of racemic β-butyrolactone ((R,S)-BL) and ε-caprolactone (CL), were synthesized by ring-opening polymerization initiated by sodium hydride (NaH).
doaj   +1 more source

Purification, Characterization, and Antioxidant Activity of Polysaccharides Isolated from Cortex Periplocae

Molecules, 2017
In this study, crude Cortex Periplocae polysaccharides (CCPPs) were extracted with water. CCPPs were decolored with AB-8 resin and deproteinated using papain-Sevage methods.
Xiaoli Wang, Yifei Zhang, Zhikai Liu, Mingqin Zhao, Pengfei Liu   +4 more
doaj   +1 more source