نتایج جستجو برای: anionic polymerization

تعداد نتایج: 40920  

Journal: :Chemical communications 2011
Kento Watanabe Takeshi Sakamoto Makoto Taguchi Michiya Fujiki Tamaki Nakano

An optically active, π-stacked poly[2,7-bis(4-tert-butylphenyl)dibenzofulvene] having a preferred-handed helical conformation was synthesized by anionic polymerization. A thin film sample of the polymer exhibited broad-band white circularly polarized light (CPL) emission on photo excitation.

Journal: :ACS macro letters 2012
Jihua Zhang Matthew J Markiewicz Bernard Weisblum Shannon S Stahl Samuel H Gellman

A new family of β-lactams is described that enables anionic ring-opening polymerization (AROP) to prepare nylon-3 materials bearing diverse appended functionality, including carboxylic acid, thiol, hydroxyl and secondary amine groups. Nylon-3 copolymers generated with the new β-lactams are shown to display distinctive self-assembly behavior and biological properties.

Journal: :Chemical communications 2011
Jing-Ling Zhu Kerh Li Liu Zhongxing Zhang Xian-Zheng Zhang Jun Li

Amphiphilic star-block copolymers based on poly(3-hydroxybutyrate) with adamantyl end-functionalization were synthesized via anionic ring-opening polymerization and alkyne-azide "Click Chemistry" coupling. In aqueous medium, the copolymers self-assembled into nanogel-like large compound micelles, and transformed into vesicular nanostructures under the direction of host-guest interaction between...

Journal: :Chemical communications 2007
Juntao Luo Christophe Pardin William D Lubell X X Zhu

New poly(vinyl alcohol)-graft-poly(ethylene glycol) (PVA-g-PEG) resins with various PEG chain lengths, which have high loadings and good swelling both in water and organic solvents, have been prepared via an anionic polymerization of ethylene oxide onto PVA beads and applied in solid-phase synthesis, supported TEMPO catalysis and in HR-MAS 1H NMR spectral analysis.

Journal: :Chemical communications 2004
Tamaki Nakano Osamu Nakagawa Masashi Tsuji Mitsuru Tanikawa Tohru Yade Yoshio Okamoto

Poly(2,7-di-n-pentyldibenzofulvene)s with no stereocenters, obtained by anionic polymerization using chiral 9-fluorenyllithium ligand complexes, showed intense circular dichroism in film form due purely to the chiral conformation of the main chain, while no chiroptical properties were detectable in solution.

Journal: :Chemical communications 2013
Hefeng Zhang Nazeeha Alkayal Yves Gnanou Nikos Hadjichristidis

A novel one-pot methodology combining anionic polymerization and polyhomologation, through a "bridge" molecule (BF3OEt2), was developed for the synthesis of polyethylene (PE)-based block copolymers. The anionically synthesized macroanion reacts with the "bridge" molecule to afford a 3-arm star (trimacromolecular borane) which serves as an initiator for the polyhomologation.

Journal: :The Journal of the Society of Chemical Industry, Japan 1962

Journal: :Journal of Polymer Science Part A: Polymer Chemistry 1991

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