3 years ago

Ligand Exchange Reaction for Controlling the Conformation of Platinum-Containing Polymers

Ligand Exchange Reaction for Controlling the Conformation
of Platinum-Containing Polymers
Tatsuo Yajima, Natsuhiro Sano, Yu Miyagi, Manabu Marumoto, Fumio Sanda, Takahiro Ishida
Control of the conformation of polymers can be achieved by the ligand exchange reaction of optically active poly(phenyleneethynylene) 1′ containing −Pt(PPh3)2– moieties in the main chain. Polymer 1′ was reacted with 1,2-bis(diphenylphosphino)ethane (dppe), 1,3-bis(diphenylphosphino)propane (dppp), and 1,4-bis(diphenylphosphino)butane (dppb) to give the corresponding polymers 2′, 3′, and 4′ containing −Pt(dppe)–, −Pt(dppp)– , and −Pt(dppb)– moieties in the main chain, respectively. Polymers 1′ and 2′ exhibited negligibly small circular dichroism (CD) signals in THF, indicating the absence of regulated chiral structures, while polymers 3′ and 4′ exhibited strong CD signals in THF. The dynamic light scattering (DLS) analysis of the polymer solutions indicated that polymer 3′ formed a chirally regulated one-handed helix intramolecularly bridged with dppp, and polymer 4′ formed aggregates intramolecularly and/or intermolecularly bridged with dppb.

Publisher URL: http://dx.doi.org/10.1021/acs.macromol.7b02249

DOI: 10.1021/acs.macromol.7b02249

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.