2,7-linked or 2,2′-linked 9,9′-spirobifluorene based polymers containing electron deficient moieties such as naphthalene bisimide and/or benzothiadiazole were synthesized through Suzuki cross-coupling reaction. The molecular weights of the copolymers containing spirobifluorene and benzothiadiazole units are relative low due to the low solubility of the resulting polymers. In addition, all polymers derived from 2,2′-linked 9,9′-spirobifluorene and naphthalene bisimide and/or benzothiadiazole showed very low molecular weights due to the low reactivity of the active species. The UV–vis absorption spectrum of the polymers containing 2,7-linked 9,9′-spirobifluorene and naphthalene bisimide exhibited the longest absorption wavelength and very low quantum yield. Alternating polymers containing spirobifluorene and naphthalene bisimide moieties showed a low band gap relative to that of the spirobifluorene and benzothiadiazole containing polymers and their random copolymers presumably there is a strong charge transfer interaction between the alternating electron-donating spirobifluorene unit and the electron-accepting naphthalene bisimide.
Polymer – Elsevier
Published: Feb 10, 2016
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera