One-step synthesis of polycarbonates bearing pendant carboxyl groups by lipase-catalyzed ring-opening polymerization

2002 ◽  
Vol 40 (9) ◽  
pp. 1267-1274 ◽  
Author(s):  
Talal F. Al-Azemi ◽  
Kirpal S. Bisht
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Carboxyl Groups ◽  
One Step

scholarly journals Zirconium (IV) Acetylacetonate: Ring-Opening Initiator Mediating One-Step Synthesis of Biodegradable Polyacids

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Piotr Dobrzyński ◽  
Małgorzata Pastusiak ◽  
Joanna Jaworska ◽  
Bożena Kaczmarczyk ◽  
Michał Kwiecień ◽  
...  
Keyword(s):  
Carboxylic Acid ◽  
Acid Derivative ◽  
Ring Opening ◽  
Active Catalyst ◽  
Ring Opening Polymerization ◽  
Cyclic Carbonate ◽  
Trimethylene Carbonate ◽  
Step Method ◽  
Polymerization Mechanism ◽  
One Step

Biodegradable polyacid is obtained in one-step ring-opening polymerization (ROP) of carboxylic-acid-functionalized six-membered cyclic carbonate mediated with zirconium (IV) acetylacetonate. Exemplary copolymers with L,L-lactide are described as well. Moreover, zirconium (IV) acetylacetonate is found to be active catalyst of trimethylene carbonate (TMC) ROP in presence of carboxylic acid yielding PTMC end-capped with the acid derivative. Polymerization mechanism is hypothesized demonstrating possibilities of the method in work-saving polycation synthesis and one-step method of conjugate synthesis of well-known biocompatible polyesters and polycarbonates.

One-step synthesis and ring-opening polymerization of novel macrocyclic(arylene multisulfide) oligomers

2003 ◽  
Vol 91 (2) ◽  
pp. 735-741 ◽  
Author(s):  
K. Chen ◽  
Y. Z. Meng ◽  
S. C. Tjong ◽  
A. S. Hay
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
One Step

SYNTHESIS OF POLY[(ε-CL)-co-(GA-alt-L-Asp)] COPOLYMER AND EFFECTS ON CELLS AFTER COUPLING WITH SMALL PEPTIDE

2015 ◽  
Vol 27 (06) ◽  
pp. 1550053
Author(s):  
Na Qiang ◽  
Fang Xie ◽  
Hao Liang ◽  
Xian-Feng Li ◽  
Shuo Tang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Gel Permeation Chromatography ◽  
Ring Opening Polymerization ◽  
Carboxyl Groups ◽  
Structure And Properties ◽  
Small Peptide ◽  
Scanning Calorimetry ◽  
Beneficial Effects ◽  
Structural Regularity ◽  
Gel Permeation

A novel poly[([Formula: see text]-CL)-co-(GA-alt-L-Asp)] with improved hydrophilicity was prepared. The monomer 3(S)-[(benzyloxycarbony)methyl]-1,4-dioxane-2,5-dione (BMD) was prepared from aspartic acid. The polymer was obtained by ring-opening polymerization of [Formula: see text]-caprolactone ([Formula: see text]-CL) and BMD. Poly[([Formula: see text]-CL)-co-(GA-alt-L-Asp)] was synthesized by deprotection. The structure and properties of the polymer were characterized using 1H nuclear magnetic resonance, gel permeation chromatography, and differential scanning calorimetry. The melting point and melting enthalpy of the polymer decreased with the increase of BMD. The structural regularity of polycaprolactone was destroyed by the BMD. A laminin-derived peptide [i.e., Arg-Gly-Asp (RGD)] was covalently tethered to the carboxyl groups and the peptide-grafted films. Results indicated that the addition of RGD had beneficial effects for cell growth, as shown by scanning electron microscopy.

One-step synthesis of triarm block copolymers by simultaneous atom transfer radical and ring-opening polymerization

2015 ◽  
Vol 73 (6) ◽  
pp. 1497-1513 ◽  
Author(s):  
Temel Öztürk ◽  
Mahmut Yavuz ◽  
Melahat Göktaş ◽  
Baki Hazer
Keyword(s):  
Block Copolymers ◽  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Atom Transfer ◽  
One Step

Heterotellurium-containing macrocycle towards degradable tellurium-functionalized polymer

2021 ◽  
Author(s):  
Jieni Hu ◽  
Chuanhao Sun ◽  
Siqi Li ◽  
Yuan Yuan ◽  
Yan Zhang
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Ring Closure ◽  
One Pot ◽  
One Step

We firstly establish a facile one-step ring-closure methodology to obtain a novel macrocyclic tellurocarbonates (MTe) series. The well-defined poly(telluride-carbonate)s (PTe) was developed by one-pot organocatalytic ring-opening polymerization (ROP) of MTe....

Biodegradable phosphorylcholine copolymer for cardiovascular stent coating

2020 ◽  
Vol 8 (24) ◽  
pp. 5361-5368 ◽  
Author(s):  
Jun Liu ◽  
Jing Wang ◽  
Yun-fan Xue ◽  
Ting-ting Chen ◽  
Dan-ni Huang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Promising Material ◽  
Radical Ring ◽  
Biodegradable Stent ◽  
Cardiovascular Stent ◽  
One Step ◽  
Stent Coating

A biodegradable phosphorylcholine-based copolymer synthesized via one-step radical ring-opening polymerization may be a promising material for biodegradable stent coating.

scholarly journals Linear and three-arm star hydroxytelechelic poly(benzyl β-malolactonate)s: a straightforward one-step synthesis through ring-opening polymerization

2015 ◽  
Vol 6 (32) ◽  
pp. 5851-5859 ◽  
Author(s):  
Ghislaine Barouti ◽  
Cédric G. Jaffredo ◽  
Sophie M. Guillaume
Keyword(s):  
Ring Opening ◽  
Ring Opening Polymerization ◽  
Operating Conditions ◽  
One Step

Ring-opening polymerization (ROP) of racemic-benzyl β-malolactonate (MLABe) initiated by an alcohol (diol or triol) and catalyzed by a metal triflate M(OTf)3, afforded α,ω-hydroxy telechelic PMLABe under mild operating conditions.

Sign in / Sign up

Export Citation Format

Share Document