U.S. flag

An official website of the United States government

PubAg

Main content area

You searched for: Journal Journal of polymer science Remove constraint Journal: Journal of polymer science Publication Year 2019 Remove constraint Publication Year: 2019 Source 2019 v.57 no.3 Remove constraint Source: 2019 v.57 no.3 Subject polymers Remove constraint Subject: polymers Subject nuclear magnetic resonance spectroscopy Remove constraint Subject: nuclear magnetic resonance spectroscopy
Start Over

Search

2  Search Results

1 - 2 of 2
Number of results to display per page

Search Results

1. Synthesis of asymmetrically substituted head‐to‐head polyacetylenes from 2,3‐disubstituted‐1,3‐butadienes

Author:
Yu, Yunhai; Qu, Chengke; He, Junpo
Source:
Journal of polymer science 2019 v.57 no.3 pp. 395-402
ISSN:
0887-624X
Subject:
benzoquinones; dehydrogenation; differential scanning calorimetry; moieties; molecular weight; nuclear magnetic resonance spectroscopy; polyacetylenes; polymerization; polymers; thermogravimetry; ultraviolet-visible spectroscopy
Abstract:
... Asymmetrically substituted head‐to‐head polyacetylenes with phenyl and triphenylamine, thienyl or pyrenyl side groups were synthesized through anionic or controlled radical polymerization of 2,3‐disubstituted‐1,3‐butadienes and subsequent dehydrogenation process. Anionic polymerizations of the designed monomers bearing pendent triphenylamine and thienyl group gave narrow disperse disubstituted pre ...
DOI:
10.1002/pola.29215

2. What happens in the dark? Assessing the temporal control of photo‐mediated controlled radical polymerizations

Author:
Dolinski, Neil D.; Page, Zachariah A.; Discekici, Emre H.; Meis, David; Lee, In‐Hwan; Jones, Glen R.; Whitfield, Richard; Pan, Xiangcheng; McCarthy, Blaine G.; Shanmugam, Sivaprakash; Kottisch, Veronika; Fors, Brett P.; Boyer, Cyrille; Miyake, Garret M.; Matyjaszewski, Krzysztof; Haddleton, David M.; de Alaniz, Javier Read; Anastasaki, Athina; Hawker, Craig J.
Source:
Journal of polymer science 2019 v.57 no.3 pp. 268-273
ISSN:
0887-624X
Subject:
monitoring; nuclear magnetic resonance spectroscopy; polymerization; polymers
Abstract:
... A signature of photo‐mediated controlled polymerizations is the ability to modulate the rate of polymerization by turning the light source ‘on’ and ‘off.’ However, in many reported systems, growth can be reproducibly observed during dark periods. In this study, emerging photo‐mediated controlled radical polymerizations are evaluated with in situ ¹H NMR monitoring to assess their behavior in the da ...
DOI:
10.1002/pola.29247
PubMed:
31011240
PubMed Central:
PMC6474683