4 years ago

Liquid/Liquid Interfacial Synthesis of a Click Nanosheet

Liquid/Liquid Interfacial Synthesis of a Click Nanosheet
Didier Astruc, Ryota Matsuoka, Ukyo Nakajima, Hiroshi Nishihara, Satoshi Horike, Hiroyasu Masunaga, Yasutaka Kitagawa, Kenichi Kato, Takeaki Ozawa, Rintaro Shimada, Amalia Rapakousiou, Ryo Shiotsuki, Sono Sasaki, Tigmansu Pal, Amran Hossain, Ryota Sakamoto
A liquid/liquid interfacial synthesis is employed, for the first time, to synthesize a covalent two-dimensional polymer nanosheet. Copper-catalyzed azide–alkyne cycloaddition (CuAAC) between a three-way terminal alkyne and azide at a water/dichloromethane interface generates a 1,2,3-triazole-linked nanosheet. The resultant nanosheet, with a flat and smooth texture, has a maximum domain size of 20 μm and minimum thickness of 5.3 nm. The starting monomers in the organic phase and the copper catalyst in the aqueous phase can only meet at the liquid/liquid interface as a two-dimensional reaction space; this allows them to form the two-dimensional polymer. The robust triazole linkage generated by irreversible covalent-bond formation allows the nanosheet to resist hydrolysis under both acidic and alkaline conditions, and to endure pyrolysis up to more than 300 °C. The coordination ability of the triazolyl group enables the nanosheet to act as a reservoir for metal ions, with an affinity order of Pd2+>Au3+>Cu2+. Between the layers: A liquid/liquid interfacial synthesis is employed to synthesize a covalent two-dimensional nanosheet. Copper-catalyzed azide–alkyne cycloaddition of a triangular terminal alkyne and azide at the interface generates a triazole-linked nanosheet (see figure). The irreversible, robust, and metal-coordinating triazole linkage allows the nanosheet to resist hydrolysis under acidic and alkaline conditions, withstand heat to >300 °C, and to take up metal ions selectively.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/chem.201700201

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.