We report high-performance star brush block copolymer electrolytes (SBBCEs) composed of 2-arm star polymer of [poly[poly(ethylene glycol) methyl ether acrylate]b-polystyrene] 2 . The physically crosslinked structure endows SBBCEs with excellent thermal stability and considerable mechanical strength, high ionic conductivity of 2.1 × 10 −4 S cm −1 at 28 °C, wide electrochemical stability window up to 5.6 V, and good interfacial compatibility with lithium anode. A s s e m b l e d L i F e P O 4 | S B B C E | L i a n d N i -r i c h L i -Ni 0.89 Co 0.09 Mg 0.02 O 2 |SBBCE|Li cells deliver superior ambienttemperature cycling performance with high reversible capacities, high Coulombic efficiency, and outstanding cyclic stability at considerable rate of 0.5 C. This proposed idea of employing physically crosslinked structure of brush block copolymer without any chemical crosslinker may broaden a new way to design high-performance polymer electrolytes.

Modulating controlled radical polymerization is an interesting and important issue. Herein, modulating RAFT polymerization employing photosensitive azobenzenes is achieved. In the presence of azobenzenes and with visible light off, RAFT polymerization runs smoothly and follows a pseudo‐first‐order kinetics. In contrast, with light on, RAFT polymerization is greatly decelerated or quenched depending on the type and concentration of azobenzenes. Switchable RAFT polymerization of different (meth)acrylate monomers alternatively with light off and on is demonstrated. A mechanism of photoregulating RAFT polymerization involving radical quenching by azobenzenes is proposed.

The star amphiphilic block copolymer of star s-PNIPAM-b-PS is synthesized and it shows characteristics significantly different from those of the linear block copolymer counterpart.

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Could the media’s attention to misinformation and fake news be harmful? We examine whether the coverage of misinformation in the media, alongside untrustworthy content and partisan sites, contributes to rising erroneous beliefs and decreasing levels of trust among U.S. citizens. We test this using experimental (Study 1) and observational data (Study 2). Study 1 finds that both exposure to actual misinformation and to the coverage of misinformation have short-term but no long-term consequences for misperceptions. Study 2 shows that behaviorally tracked visits to untrustworthy sites and exposure to content covering misinformation —although relatively rare — both predict lower trust, and that visits to liberal news sites boost trust in scientists. Although the direct impact of untrustworthy sites and the coverage of misinformation on misperceptions is short-lived, it may matter more for other outcomes such as trust, which are crucial to the functioning of democracies.