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Title: Magnetic hydrogels from alkyne/cobalt carbonyl-functionalized ABA triblock copolymers

Abstract

A series of alkyne-functionalized poly(4-(phenylethynyl)styrene)- block-poly(ethylene oxide)- block-poly(4-(phenylethynyl)styrene) (PPES-b-PEO-b-PPES) ABA triblock copolymers was synthesized by reversible addition–fragmentation chain transfer (RAFT) polymerization. PES n[Co 2(CO) 6] x-EO 800-PES n[Co 2(CO) 6] x ABA triblock copolymer/cobalt adducts (10–67 wt % PEO) were subsequently prepared by reaction of the alkyne-functionalized PPES block with Co 2(CO) 8 and their phase behavior was studied by TEM. Heating triblock copolymer/cobalt carbonyl adducts at 120 °C led to cross-linking of the PPES/Co domains and the formation of magnetic cobalt nanoparticles within the PPES/Co domains. Magnetic hydrogels could be prepared by swelling the PEO domains of the cross-linked materials with water. Furthermore, swelling tests, rheological studies and actuation tests demonstrated that the water capacity and modulus of the hydrogels were dependent upon the composition of the block copolymer precursors.

Authors:
 [1];  [1];  [1];  [1];  [1];  [2];  [1];  [1];  [1]
  1. Stony Brook Univ., Stony Brook, NY (United States)
  2. Brookhaven National Lab. (BNL), Upton, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States). Center for Functional Nanomaterials (CFN)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1328374
Report Number(s):
BNL-112681-2016-JA
Journal ID: ISSN 0002-7863; KC0403020
Grant/Contract Number:  
SC00112704
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of the American Chemical Society
Additional Journal Information:
Journal Volume: 138; Journal Issue: 13; Journal ID: ISSN 0002-7863
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; magnetic hydrogels; triblock copolymers; Center for Functional Nanomaterials

Citation Formats

Jiang, Bingyin, Hom, Wendy L., Chen, Xianyin, Yu, Pengqing, Pavelka, Laura C., Kisslinger, Kim, Parise, John B., Bhatia, Surita R., and Grubbs, Robert B. Magnetic hydrogels from alkyne/cobalt carbonyl-functionalized ABA triblock copolymers. United States: N. p., 2016. Web. doi:10.1021/jacs.6b01271.
Jiang, Bingyin, Hom, Wendy L., Chen, Xianyin, Yu, Pengqing, Pavelka, Laura C., Kisslinger, Kim, Parise, John B., Bhatia, Surita R., & Grubbs, Robert B. Magnetic hydrogels from alkyne/cobalt carbonyl-functionalized ABA triblock copolymers. United States. doi:10.1021/jacs.6b01271.
Jiang, Bingyin, Hom, Wendy L., Chen, Xianyin, Yu, Pengqing, Pavelka, Laura C., Kisslinger, Kim, Parise, John B., Bhatia, Surita R., and Grubbs, Robert B. Wed . "Magnetic hydrogels from alkyne/cobalt carbonyl-functionalized ABA triblock copolymers". United States. doi:10.1021/jacs.6b01271. https://www.osti.gov/servlets/purl/1328374.
@article{osti_1328374,
title = {Magnetic hydrogels from alkyne/cobalt carbonyl-functionalized ABA triblock copolymers},
author = {Jiang, Bingyin and Hom, Wendy L. and Chen, Xianyin and Yu, Pengqing and Pavelka, Laura C. and Kisslinger, Kim and Parise, John B. and Bhatia, Surita R. and Grubbs, Robert B.},
abstractNote = {A series of alkyne-functionalized poly(4-(phenylethynyl)styrene)-block-poly(ethylene oxide)-block-poly(4-(phenylethynyl)styrene) (PPES-b-PEO-b-PPES) ABA triblock copolymers was synthesized by reversible addition–fragmentation chain transfer (RAFT) polymerization. PESn[Co2(CO)6]x-EO800-PESn[Co2(CO)6]x ABA triblock copolymer/cobalt adducts (10–67 wt % PEO) were subsequently prepared by reaction of the alkyne-functionalized PPES block with Co2(CO)8 and their phase behavior was studied by TEM. Heating triblock copolymer/cobalt carbonyl adducts at 120 °C led to cross-linking of the PPES/Co domains and the formation of magnetic cobalt nanoparticles within the PPES/Co domains. Magnetic hydrogels could be prepared by swelling the PEO domains of the cross-linked materials with water. Furthermore, swelling tests, rheological studies and actuation tests demonstrated that the water capacity and modulus of the hydrogels were dependent upon the composition of the block copolymer precursors.},
doi = {10.1021/jacs.6b01271},
journal = {Journal of the American Chemical Society},
issn = {0002-7863},
number = 13,
volume = 138,
place = {United States},
year = {2016},
month = {3}
}

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