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Direct Polymerization Approach to Synthesize Acid-Degradable Block Copolymers Bearing Imine Pendants for Tunable pH-Sensitivity and Enhanced Release.

Author(s): Hu X, Oh JK

The development of effective approaches to synthesize smart amphiphilic block copolymers (ABPs) exhibiting acid-responsive degradation through the cleavage of acid-labile imine bonds is extensively explored for controlled release of encapsulated biomolecule...

Article GUID: 32964550
Reduction-Responsive Sheddable Carbon Nanotubes Dispersed in Aqueous Solution.

Author(s): An SY, Sun S, Oh JK

Macromol Rapid Commun. 2016 Apr;37(8):705-10 Authors: An SY, Sun S, Oh JK

Article GUID: 26890479
Multiblock Copolymer-Based Dual Dynamic Disulfide and Supramolecular Crosslinked Self-Healing Networks.

Author(s): An SY, Noh SM, Oh JK

Macromol Rapid Commun. 2017 Apr;38(8): Authors: An SY, Noh SM, Oh JK

Article GUID: 28221703
Thermally Labile Self-Healable Branched Gel Networks Fabricated by New Macromolecular Engineering Approach Utilizing Thermoreversibility.

Author(s): Jung S, Patel T, Oh JK

Macromol Rapid Commun. 2018 Mar;39(5): Authors: Jung S, Patel T, Oh JK

Article GUID: 29210490
PLA-Based Triblock Copolymer Micelles Exhibiting Dual Acidic pH/Reduction Responses at Dual Core and Core/Corona Interface Locations.

Author(s): Bawa KK, Jazani AM, Shetty C, Oh JK

Macromol Rapid Commun. 2018 Dec;39(24):e1800477 Authors: Bawa KK, Jazani AM, Shetty C, Oh JK

Article GUID: 30286258
Title:Multiblock Copolymer-Based Dual Dynamic Disulfide and Supramolecular Crosslinked Self-Healing Networks.
Authors:An SY,  Noh SM,  Oh JK
Link:https://www.ncbi.nlm.nih.gov/pubmed/28221703?dopt=Abstract
Category:Macromol Rapid Commun
PMID:28221703
Dept Affiliation: CHEMBIOCHEM
1 Department of Chemistry and Biochemistry, Concordia University, Montreal, Quebec, H4B 1R6, Canada.
2 Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology (KRICT), Ulsan, 44412, Republic of Korea.

Description:

Multiblock Copolymer-Based Dual Dynamic Disulfide and Supramolecular Crosslinked Self-Healing Networks.

Macromol Rapid Commun. 2017 Apr;38(8):

Authors: An SY, Noh SM, Oh JK

Abstract

A new multiblock copolymer self-healing strategy is reported that centers on the synthesis of block copolymers designed with different self-healing motifs incorporated into individual blocks. As a proof of concept, a novel pentablock copolymer (ABCBA) consisting of a poly(ethylene glycol) middle block and self-healable symmetric blocks of a polymethacrylate with pendant disulfide linkages and carboxylic acids is synthesized by a combination of consecutive controlled radical polymerization with hydrolytic cleavage. Disulfide exchange reactions of pendant disulfide linkages and metal-ligand interactions of pendant carboxylic acids with ferric ions allow for the formation of dual crosslinked networks with dynamic disulfide and supramolecular crosslinkages. The resultant networks possessing self-healing viscoelasticity enable self-healing on macroscale damages through supramolecular metal-ligand interactions and disulfide exchange reactions at room or moderate temperatures. These preliminary results suggest that the strategy can offer the versatility in the development of multifunctional self-healable materials in dual or multiple self-healable mechanisms.

PMID: 28221703 [PubMed - indexed for MEDLINE]