Poly(4-vinylpyridine) (P4VP) (M v = 16 × 104 g/mol) was synthesized by radical polymerization. The molecular weight was determined using viscosity and light scattering techniques. The objective of this work is to study the interaction of P4VP (2.88 × 10−3 M) with proton H+ at 25 °C. The neutralization degrees vary between 0 and 1. This investigation was followed using UV–visible spectrophotometer and 1H NMR spectroscopy characterizations. An isobestic point was observed at α = 0.2 in 50/50 v/v water–methanol mixture. An equilibrium between the protonated and the non-protonated forms of P4VP was pronounced at α = 0.6. Constant 1H NMR chemical shifts are interpreted by stability of the structural copolymer conformation. For higher neutralization degree values, no significant changes of the structure and the conformation were observed. It was concluded that equilibrium exists between N and N+ in the P4VP/HCl system in 50 % water–methanol solution.
Research on Chemical Intermediates – Springer Journals
Published: Jun 26, 2014
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