Related Researcher

Author's Photo

Kim, Byeong-Su
Soft and Hybrid Nanomaterials Lab
Research Interests
  • Carbon materials, polymer, Layer-by-Layer (LbL) assembly, hyperbranched polymer, polyglycerol (PG), bio-applications


Thermoresponsive graphene nanosheets by functionalization with polymer brushes

DC Field Value Language Bak, Jae Min ko Lee, Taemin ko Seo, Eunyong ko Lee, Youngil ko Jeong, Han Mo ko Kim, Byeong-Su ko Lee, Hyung-il ko 2014-04-10T01:53:07Z - 2013-07-05 ko 2012-01 -
dc.identifier.citation POLYMER, v.53, no.2, pp.316 - 323 ko
dc.identifier.issn 0032-3861 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract We report the preparation of thermoresponsive graphene nanosheets functionalized by the polymer brushes. This approach involves the direct growth of thermoresponsive polymer brushes from functional graphene sheets (FGSs) by chemical modification with initiators followed by extension with poly(2-(dimethylamino)ethyl methacrylate) (PDMAEMA) through surface-initiated atom transfer radical polymerization. The highly controllable polymerization method affords the hybrid FGS-PDMAEMA with tailorable length of PDMAEMA brushes possessing the average molecular weight (M n) ranging from 7.4 × 10 3 to 6.0 × 10 4 with low molecular weight distributions (M w/M n = 1.09-1.22). The resulting FGS-PDMAEMA was carefully characterized with a number of techniques, including elemental analysis, thermogravimetric analysis, differential scanning calorimetry, X-ray photoelectron spectroscopy, scanning electron microscopy, and transmission electron microscopy, all supporting the successful integration of polymer brushes onto the surface of FGS. Most importantly, we accomplished the reversible phase transfer of this hybrid FGS-PDMAEMA between aqueous and organic phases via temperature control by taking advantage of the thermoresponsive nature of PDMAEMA brushes. Moreover, the composite film prepared by depositing the suspensions of FGS-PDMAEMA demonstrated the facile control over the wettability upon temperature changes. This tailored control over dispersion in water, selective solubilization between aqueous and organic solvents, and wettability control upon temperature variation have a significant impact on the ability to improve properties of hybrid graphene-based materials. Because of the highly versatile and tunable properties of surface-initiated atom transfer polymerization, we anticipate that the general concept presented here offers a unique potential platform for integrating responsive polymers for graphene nanosheets for advanced electronic, energy, and sensor applications. ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher ELSEVIER SCI LTD ko
dc.subject 2-(dimethylamino)ethyl methacrylate ko
dc.subject Average molecular weight ko
dc.subject Direct growth ko
dc.subject FGSs ko
dc.subject Functionalizations ko
dc.subject Functionalized ko
dc.subject Graphene sheets ko
dc.subject Low molecular weight ko
dc.subject Organic phasis ko
dc.subject Over dispersion ko
dc.subject PDMAEMA ko
dc.subject Phase transfer ko
dc.subject Polymer brushes ko
dc.subject Polymerization method ko
dc.subject Responsive polymer ko
dc.subject Selective solubilization ko
dc.subject Sensor applications ko
dc.subject Significant impacts ko
dc.subject Surface-initiated atom transfer ko
dc.subject Temperature changes ko
dc.subject Temperature variation ko
dc.subject Thermo-responsive ko
dc.subject Thermoresponsive polymer ko
dc.subject Tunable properties ko
dc.subject Wettability control ko
dc.title Thermoresponsive graphene nanosheets by functionalization with polymer brushes ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84855822825 ko
dc.identifier.wosid 000299607400008 ko
dc.type.rims ART ko
dc.description.scopustc 17 * 2014-07-12 *
dc.identifier.doi 10.1016/j.polymer.2011.11.057 ko
Appears in Collections:
PHY_Journal Papers

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show simple item record


  • mendeley


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.