Using reversibility of the dynamic covalent bond to create porosity in highly ordered polymer thin films under mild conditions and nano-pore functionalization in the gas phase
Phase-separating polystyrene (PS) and polyethylene glycol (PEG) polymers are connected through a hydrazone-based reversible covalent bond to afford a PS-CH&z.dbd; N-PEG diblock copolymer. This novel dynamic covalent copolymer assembles into a nano-structured cylindrical morphology in thin films....
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| Veröffentlicht in: | Polymer chemistry 2013-01, Vol.4 (9), p.2691-2695 |
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| container_title | Polymer chemistry |
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| creator | Rao, Jingyi Khan, Anzar |
| description | Phase-separating polystyrene (PS) and polyethylene glycol (PEG) polymers are connected through a hydrazone-based reversible covalent bond to afford a PS-CH&z.dbd; N-PEG diblock copolymer. This novel dynamic covalent copolymer assembles into a nano-structured cylindrical morphology in thin films. Reversal of the hydrazone linkage and removal of PEG-hydrazide under mild conditions afford a nano-porous membrane featuring a chemically reactive functionality in the nano-pores. Availability of these reactive groups for further thin film functionalization is demonstrated by re-establishing the imine bond with a small molecule amine. This modification strategy does not require any coupling reagent, solvent, or high temperature. Therefore, a gas-phase technique is sufficient for film functionalization purposes. |
| doi_str_mv | 10.1039/c3py00200d |
| format | Article |
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This novel dynamic covalent copolymer assembles into a nano-structured cylindrical morphology in thin films. Reversal of the hydrazone linkage and removal of PEG-hydrazide under mild conditions afford a nano-porous membrane featuring a chemically reactive functionality in the nano-pores. Availability of these reactive groups for further thin film functionalization is demonstrated by re-establishing the imine bond with a small molecule amine. This modification strategy does not require any coupling reagent, solvent, or high temperature. 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| fulltext | fulltext |
| identifier | ISSN: 1759-9954 |
| ispartof | Polymer chemistry, 2013-01, Vol.4 (9), p.2691-2695 |
| issn | 1759-9954 1759-9962 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_1349461920 |
| source | Royal Society Of Chemistry Journals 2008-; Alma/SFX Local Collection |
| subjects | Copolymers Covalent bonds Dynamics Nanocomposites Nanomaterials Nanostructure Polystyrene resins Thin films |
| title | Using reversibility of the dynamic covalent bond to create porosity in highly ordered polymer thin films under mild conditions and nano-pore functionalization in the gas phase |
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