Journal of Polymer Science Part A: Polymer Chemistry
Copyright © 2012 Wiley Periodicals, Inc., A Wiley Company
Impact Factor: 3.543
ISI Journal Citation Reports © Ranking: 2012: 12/83 (Polymer Science)
Online ISSN: 1099-0518
Associated Title(s): Journal of Polymer Science Part B: Polymer Physics
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- Chiral sensing of Eu(III)-containing achiral polymer complex from chiral amino acids coordination induction
Chunhui Dai, Yuxiang Wang, Yiwu Quan, Qingmin Chen, Yixiang Cheng and Chengjian Zhu
Article first published online: 18 AUG 2014 | DOI: 10.1002/pola.27356
A novel β-diketonate-based Eu(III)-containing polymer complex was designed as a CD probe for direct enantioselective recognition of N-Boc-proline enantiomers. The linear regression analysis of in situ CD sensing shows a good agreement between the magnitude of molar ellipticity and concentration of chiral N-Boc-l or d-proline, indicating that this kind Eu(III)-containing achiral polymer complex can be used as a chiral-sensing probe for enantioselective recognition of N-Boc-l or d-proline enantiomers based on Cotton effect of CD spectra.
- Revisiting thiol-yne chemistry: Selective and efficient monoaddition for block and graft copolymer formation
Johannes K. Sprafke, Jason M. Spruell, Kaila M. Mattson, Damien Montarnal, Alaina J. McGrath, Robert Pötzsch, Daigo Miyajima, Jerry Hu, Allegra A. Latimer, Brigitte I. Voit, Takuzo Aida and Craig J. Hawker
Article first published online: 18 AUG 2014 | DOI: 10.1002/pola.27345
Polymer coupling reactions are some of the most challenging chemical transformations due to low end-group concentration, steric hindrance, and decreased reactivity. Thiol-yne chemistry is shown to be a near-quantitative and selective strategy for the coupling of pre-formed polymers to give block and graft copolymers. With aromatic alkynes under a wide range of conditions, specific mono-addition is achieved with efficiencies surpassing those of traditional thiol-ene chemistry.
- The pH induced vesicle to micelle morphology transition of a THP-protected polymer
Kay E. B. Doncom, Helen Willcock and Rachel K. O'Reilly
Article first published online: 16 AUG 2014 | DOI: 10.1002/pola.27348
A diblock copolymer containing a protected acid block, a permanently hydrophobic block, and a charged hydrophilic end group was synthesized by RAFT polymerization. The polymer self-assembled into vesicles in aqueous solution, directed by the hydrophilic end group, and the removal of the protecting groups yielded an amphiphilic diblock copolymer, which exists as micelles in aqueous solution. The vesicle to micelle morphology was demonstrated by DLS and TEM.
- Evaluation of proton conductivity of sulfonated polyimide/dihydroxy naphthalene charge-transfer complex hybrid membranes
Liana Christiani, Sandra Hilaire, Kazunari Sasaki and Masamichi Nishihara
Article first published online: 14 AUG 2014 | DOI: 10.1002/pola.27343
Polymer coupling reactions are some of the most challenging chemical transformations due to low end-group concentration, steric hindrance, and decreased reactivity. Thiol-yne chemistry is shown to be a near-quantitative and selective strategy for the coupling of preformed polymers to give block and graft copolymers. With aromatic alkynes under a wide range of conditions, specific monoaddition is achieved with efficiencies surpassing those of traditional thiol-ene chemistry.
- Influence of linkage chemistry on folding, self-assembly, and photoresponse of amphiphilic azobenzene main chain polymers
Zhilin Yu and Stefan Hecht
Article first published online: 14 AUG 2014 | DOI: 10.1002/pola.27344
Two types of amphiphilic polymers, composed of azobenzene repeat units in the main chain connected either via ethynylene or butadiynylene linkages and carrying (chiral) oligo(ethylene glycol) side chains, have been synthesized via Sonogashira–Hagihara or Glaser polycondensation. Solvent titration experiments reveal that both polymers fold into stable helices in a polar environment. While the ethynylene-bridged polymer (PAzoE) resembles the behavior of its oligomeric counterparts, introduction of the extended diacetylene unit strengthens π,π-stacking interactions in case of the butadiynylene-bridged polymer (PAzoB), leading to a pronounced aggregation tendency and suppressing photoisomerization in the folded state.