Phase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy study
Scanning force microscopy (SFM) is used to study the surface morphology of spin-coated thin films of the ion-transport polymer poly(ethylene oxide) (PEO) blended with either cyclodextrin (CD)-threaded conjugated polyrotaxanes based on poly(4,4′-diphenylene-vinylene) (PDV), β-CD-PDV, or their uninsul...
| Main Authors: | , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2007
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| _version_ | 1797090700678922240 |
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| author | Sardone, L Williams, C Anderson, H Marletta, G Cacialli, F Samori, P |
| author_facet | Sardone, L Williams, C Anderson, H Marletta, G Cacialli, F Samori, P |
| author_sort | Sardone, L |
| collection | OXFORD |
| description | Scanning force microscopy (SFM) is used to study the surface morphology of spin-coated thin films of the ion-transport polymer poly(ethylene oxide) (PEO) blended with either cyclodextrin (CD)-threaded conjugated polyrotaxanes based on poly(4,4′-diphenylene-vinylene) (PDV), β-CD-PDV, or their uninsulated PDV analogues. Both the polyrotaxanes and their blends with PEO are of interest as active materials in light-emitting devices. The SFM analysis of the blended films supported on mica and on indium tin oxide (ITO) reveals in both cases a morphology that reflects the substrate topography on the (sub-)micrometer scale and is characterized by an absence of the surface structure that is usually associated with phase segregation. This observation confirms a good miscibility of the two hydrophilic components, when deposited by using spin-coating, as suggested by the luminescence data on devices and thin films. Clear evidence of phase segregation is instead found when blending PEO with a new organic-soluble conjugated polymer such as a silylated poly(fluorene)-afr-poly(para-phenylene) based polyrotaxane (THS-β-CD-PF- PPP). The results obtained are relevant to the understanding of the factors influencing the interfacial and the intermolecular interactions with a view to optimizing the performance of light-emitting diodes, and light-emitting electrochemical cells based on supramolecularly engineered organic polymers. © 2007 WILEY-VCH Verlag GmbH and Co. KGaA. |
| first_indexed | 2024-03-07T03:22:27Z |
| format | Journal article |
| id | oxford-uuid:b7e2cd5c-9c19-452f-b5f0-9b2e2ec1d1ec |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:22:27Z |
| publishDate | 2007 |
| record_format | dspace |
| spelling | oxford-uuid:b7e2cd5c-9c19-452f-b5f0-9b2e2ec1d1ec2022-03-27T04:51:54ZPhase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy studyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b7e2cd5c-9c19-452f-b5f0-9b2e2ec1d1ecEnglishSymplectic Elements at Oxford2007Sardone, LWilliams, CAnderson, HMarletta, GCacialli, FSamori, PScanning force microscopy (SFM) is used to study the surface morphology of spin-coated thin films of the ion-transport polymer poly(ethylene oxide) (PEO) blended with either cyclodextrin (CD)-threaded conjugated polyrotaxanes based on poly(4,4′-diphenylene-vinylene) (PDV), β-CD-PDV, or their uninsulated PDV analogues. Both the polyrotaxanes and their blends with PEO are of interest as active materials in light-emitting devices. The SFM analysis of the blended films supported on mica and on indium tin oxide (ITO) reveals in both cases a morphology that reflects the substrate topography on the (sub-)micrometer scale and is characterized by an absence of the surface structure that is usually associated with phase segregation. This observation confirms a good miscibility of the two hydrophilic components, when deposited by using spin-coating, as suggested by the luminescence data on devices and thin films. Clear evidence of phase segregation is instead found when blending PEO with a new organic-soluble conjugated polymer such as a silylated poly(fluorene)-afr-poly(para-phenylene) based polyrotaxane (THS-β-CD-PF- PPP). The results obtained are relevant to the understanding of the factors influencing the interfacial and the intermolecular interactions with a view to optimizing the performance of light-emitting diodes, and light-emitting electrochemical cells based on supramolecularly engineered organic polymers. © 2007 WILEY-VCH Verlag GmbH and Co. KGaA. |
| spellingShingle | Sardone, L Williams, C Anderson, H Marletta, G Cacialli, F Samori, P Phase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy study |
| title | Phase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy study |
| title_full | Phase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy study |
| title_fullStr | Phase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy study |
| title_full_unstemmed | Phase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy study |
| title_short | Phase segregation in thin films of conjugated polyrotaxane-poly(ethylene oxide) blends: A scanning force microscopy study |
| title_sort | phase segregation in thin films of conjugated polyrotaxane poly ethylene oxide blends a scanning force microscopy study |
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