I D
× COMMENTARYEDITOR'S PAGECOVER STORYIN THE NEWSNEWSFRONTSCHEMENTATOR + Show More BUSINESS NEWSTECHNICAL & PRACTICALFEATURE REPORTFACTS AT YOUR FINGERTIPSTECHNOLOGY PROFILEENGINEERING PRACTICEEQUIPMENT & SERVICESAPPLIED TECHNOLOGIESFOCUSNEW PRODUCTS + Show More

Comment

Janus cube: A new, economical way to synthesize ‘two-faced’ organosilicons

By Tetsuo Satoh |

Professor Masafumi Unno and colleagues at Gunma University (Kiryu City, Japan; element.chem-bio.st.gunma-u.ac.jp) have developed a simple method for the synthesis of “Janus cubes,” which are nano-sized organosilicons with two different substituents (diagram). These nanoparticles — named after the two-faced Roman god — are useful raw materials with a unique structure used in the creation of high-performance silicon and silicone materials, but an economical process for making them has eluded researchers until now. The Gunma chemists synthesized and characterized a “perfect” Janus cube, octasilsesquioxane, which is an organosilane containing fluorine. It was made by a novel siloxane bond-forming reaction involving coupling a silanol salt and fluorosilane: the cross-coupling of sodium cyclosiloxanolate and cyclic fluorosiloxane “half-cubes.” The reaction is performed under mild conditions, does not generate any byproducts and is expected to be applicable for making organic-inorganic hybrid materials, the researchers say. The achievement is part of a project that is being led by Kazuhiko Satoh at the National Institute of Advanced Industrial Science and Technology (AIST; Tsukuba; www.aist.go.jp) with support from the…
Related Content
Chementator briefs
'New food' GEA AG (Düsseldorf, Germany; www.gea.com) has received a contract from Novozymes A/S (Copenhagen, Denmark; www.novozymes.com) for a turnkey…

Chemical Engineering publishes FREE eletters that bring our original content to our readers in an easily accessible email format about once a week.
Subscribe Now
How to Select a Pump for Industrial Applications
Temperature Instruments Improve Operations
Steel Belt Units for Medical Membranes
Upstream Oil & Gas: Automation intelligence from wellhead to distribution
Video - CoriolisMaster

View More