23 May 01:31

Computational Studies of Carboxylate-Assisted C–H Activation and Functionalization at Group 8–10 Transition Metal Centers

by David L. Davies, Stuart A. Macgregor and Claire L. McMullin

TOC Graphic

Chemical Reviews
DOI: 10.1021/acs.chemrev.6b00839
22 May 16:54

10/10

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Tagged: fail gif , splash
22 May 20:29

How to Protect Yourself Online, with Former Black-Hat Hacker Hector Monsegur

by Alice Bradley

This week on The Upgrade we talk with Hector Monsegur, Director of Assessment Services at Rhino Labs.

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22 May 20:02

How Fonts Are Fueling the Culture Wars

by msmash
Reader mirandakatz writes: Typography is having a bit of a moment: Suddenly, tons of people who don't work in design have all sorts of opinions about it, and are taking every opportunity to point out poor font choices and smaller design elements. But they're missing the bigger picture. As Medium designer Ben Hersh writes at Backchannel, typography isn't just catchy visuals: It can also be dangerous. As Hersh writes, 'Typography can silently influence: It can signify dangerous ideas, normalize dictatorships, and sever broken nations. In some cases it may be a matter of life and death. And it can do this as powerfully as the words it depicts.' Don't believe him? He's got ample visual examples to prove it.

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22 May 00:58

SSSS page 725

Page 725 is up!
22 May 13:37

New synthetic routes towards MOF production at scale

Chem. Soc. Rev., 2017, Advance Article
DOI: 10.1039/C7CS00109F, Review Article
Marta Rubio-Martinez, Ceren Avci-Camur, Aaron W. Thornton, Inhar Imaz, Daniel Maspoch, Matthew R. Hill
The potential commercial applications for metal organic frameworks (MOFs) are tantalizing.
To cite this article before page numbers are assigned, use the DOI form of citation above.
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22 May 10:43

Ferrocene-diketopyrrolopyrrole based non-fullerene acceptors for bulk heterojunction polymer solar cells

J. Mater. Chem. A, 2017, Accepted Manuscript
DOI: 10.1039/C7TA03322B, Paper
Ganesh D Sharma, Yuvraj Patil, Rajneesh Misra, Rahul Singhal
Herein we have investigated the photovoltaic properties of ferrocenyl tetracyanobutadiene derivatives of diketopyrrolopyrroles SM1 and SM2 as efficient non-fullerene acceptors along with a donor-acceptor (D-A) conjugated polymer P as donor...
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22 May 21:31

Who Wants to Go to German Preschool?

by Joanna Goddard

German Forest Kindergarten

If little kids could close their eyes and envision their dream preschool, it might look something like Robin Hood Waldkindergarten in Berlin — one of more than 1,500 “forest kindergartens” in Germany.… Read more

The post Who Wants to Go to German Preschool? appeared first on A Cup of Jo.

22 May 15:08

Bimetal-Organic-Framework Derivation of Ball-Cactus-Like Ni-Sn-P@C-CNT as Long-Cycle Anode for Lithium Ion Battery

by Ruoling Dai, Weiwei Sun, Li-Ping Lv, Minghong Wu, Hao Liu, Guoxiu Wang, Yong Wang

Metal phosphides are a new class of potential high-capacity anodes for lithium ion batteries, but their short cycle life is the critical problem to hinder its practical application. A unique ball-cactus-like microsphere of carbon coated NiP2/Ni3Sn4 with deep-rooted carbon nanotubes (Ni-Sn-P@C-CNT) is demonstrated in this work to solve this problem. Bimetal-organic-frameworks (BMOFs, Ni-Sn-BTC, BTC refers to 1,3,5-benzenetricarboxylic acid) are formed by a two-step uniform microwave-assisted irradiation approach and used as the precursor to grow Ni-Sn@C-CNT, Ni-Sn-P@C-CNT, yolk–shell Ni-Sn@C, and Ni-Sn-P@C. The uniform carbon overlayer is formed by the decomposition of organic ligands from MOFs and small CNTs are deeply rooted in Ni-Sn-P@C microsphere due to the in situ catalysis effect of Ni-Sn. Among these potential anode materials, the Ni-Sn-P@C-CNT is found to be a promising anode with best electrochemical properties. It exhibits a large reversible capacity of 704 mA h g−1 after 200 cycles at 100 mA g−1 and excellent high-rate cycling performance (a stable capacity of 504 mA h g−1 retained after 800 cycles at 1 A g−1). These good electrochemical properties are mainly ascribed to the unique 3D mesoporous structure design along with dual active components showing synergistic electrochemical activity within different voltage windows.

Thumbnail image of graphical abstract

Bimetal-organic frameworks of Ni-Sn-BTC metal organic framework precursor are used to synthesize a unique ball-cactus-like Ni-Sn-P@C-CNT microsphere with carbon overlayer and deep-rooted CNTs. It delivers a large Li-storage capacity of 704 mA h g−1 after 200 cycles at 100 mA g−1 and excellent high-rate cycling performance. A capacity of 504 mA h g−1 is retained after 800 cycles at 1 A g−1.

22 May 21:22

Baking Soda Shortage Has Hospitals Frantic, Delaying Treatments and Surgeries

by BeauHD
An anonymous reader quotes a report from Ars Technica: Amid a national shortage of a critical medicine, US hospitals are hoarding vials, delaying surgeries, and turning away patients, The New York Times reports. The medicine in short supply: solutions of sodium bicarbonate -- aka, baking soda. The simple drug is used in all sorts of treatments, from chemotherapies to those for organ failure. It can help correct the pH of blood and ease the pain of stitches. It is used in open-heart surgery, can help reverse poisonings, and is kept on emergency crash carts. But, however basic and life-saving, the drug has been in short supply since around February. The country's two suppliers, Pfizer and Amphastar, ran low following an issue with one of Pfizer's suppliers -- the issue was undisclosed due to confidentiality agreements. Amphastar's supplies took a hit with a spike in demand from desperate Pfizer customers. Both companies told the NYT that they don't know when exactly supplies will be restored. They speculate that it will be no earlier than June or August. With the shortage of sodium bicarbonate, hospitals are postponing surgeries and chemotherapy treatments. A hospital in Mobile, Alabama, for example, postponed seven open-heart surgeries and sent one critically ill patient to another hospital due to the shortage.

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