3 years ago

10-Silacorroles Exhibiting Near-Infrared Absorption and Emission

10-Silacorroles Exhibiting Near-Infrared Absorption and Emission
Hiroto Omori, Hiroshi Shinokubo, Satoru Hiroto
10-Silacorroles were obtained from the Pd-catalyzed silylative cyclization of a bis(α,α′-dibromodipyrrin) NiII precursor with dihydrosilanes. These 10-silacorroles show substantially red-shifted absorption bands relative to those of normal porphyrins and isocorroles. Notably, the corresponding free base and ZnII 10-silacorroles exhibit emissions in the NIR region. Theoretical calculations on these 10-silacorroles revealed the presence of σ*–π* conjugation between the silyl group and the tetrapyrrole π system, which significantly lowers their LUMO energy levels. Jump to 1000 nm! A new family of heteroporphyrinoid, 10-silacorroles, has been prepared through Pd-catalyzed silylation of a dibromodipyrrin NiII precursor. 10-Silacorroles exhibited near-infrared absorption (NIR) and emission. Theoretical analysis and electrochemical investigation revealed the presence of σ*–π* conjugation between the silicon atom and tetrapyrrolic macrocyclic skeleton.

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

DOI: 10.1002/chem.201701474

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.