These aren't your mothers memes. These memes take things to a whole new depraved level of comedy and debauchery, where other memes fail to go.
Because of the lack of effective alkylating reagents, alkyl etherification of olefins with general alkyl groups has not been previously reported. In this work, a variety of alkyl diacyl peroxides and peresters generated from aliphatic acids have been found to enable the first iron-catalyzed alkyl etherification of olefins with general alkyl groups. Primary, secondary and tertiary aliphatic acids are suitable for this reaction, delivering products with yields up to 97 %. Primary and secondary alcohols react well, affording products in up to 91 % yield.
Introducing peroxides: Alkyl diacyl peroxides and peresters generated from aliphatic acids enable the first iron-catalyzed alkyl etherification of olefins with general alkyl groups. Primary, secondary and tertiary aliphatic acids as well as primary and secondary alcohols are suitable for this reaction.
Red phosphorus (P) has attracted intense attention as promising anode material for high-energy density sodium-ion batteries (NIBs), owing to its high sodium storage theoretical capacity (2595 mAh g−1). Nevertheless, natural insulating property and large volume variation of red P during cycling result in extremely low electrochemical activity, leading to poor electrochemical performance. Herein, the authors demonstrate a rational strategy to improve sodium storage performance of red P by confining nanosized amorphous red P into zeolitic imidazolate framework-8 (ZIF-8) -derived nitrogen-doped microporous carbon matrix (denoted as P@N-MPC). When used as anode for NIBs, the P@N-MPC composite displays a high reversible specific capacity of ≈600 mAh g−1 at 0.15 A g−1 and improved rate capacity (≈450 mAh g−1 at 1 A g−1 after 1000 cycles with an extremely low capacity fading rate of 0.02% per cycle). The superior sodium storage performance of the P@N-MPC is mainly attributed to the novel structure. The N-doped porous carbon with sub-1 nm micropore facilitates the rapid diffusion of organic electrolyte ions and improves the conductivity of the encapsulated red P. Furthermore, the porous carbon matrix can buffer the volume change of red P during repeat sodiation/desodiation process, keeping the structure intact after long cycle life.
By confining nanosized amorphous red P into a zeolitic imidazolate framework-8 (ZIF-8)-derived nitrogen-doped microporous carbon matrix (denoted as P@N-MPC), the sodium storage performance of red P is improved significantly. The superior sodium storage performance is mainly attributed to the novel nanosized core/shell structure. The P@N-MPC holds great promise for practical application in next-generation high-energy-density sodium-ion batteries.
Turbo-geeks of London! BAHFest London tickets are about 40% sold. We usually sell 70% of tickets in the last week, so this one will definitely sell out. Book now, or dwell in sorrow.
Some airlines have their flight attendants ask you and your fellow passengers to raise your window shades during take-off and landing. This isn’t about waking passengers up at the end of a red-eye or having all the shades up or down for the next flight, it’s about safety.
Getting a great job at a great company isn’t easy, and that means their interview questions are going to be difficult. If you thought the usual interview fare like “tell me about yourself” is tough, wait til you see these.