Please use this identifier to cite or link to this item:
http://hdl.handle.net/10773/20255
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Nunes, S. C. | pt |
dc.contributor.author | Ferreira, C. B. | pt |
dc.contributor.author | Ferreira, R. A. S. | pt |
dc.contributor.author | Carlos, L. D. | pt |
dc.contributor.author | Ferro, M. C. | pt |
dc.contributor.author | Mano, J. F. | pt |
dc.contributor.author | Almeida, P. | pt |
dc.contributor.author | Bermudez, V. de Zea | pt |
dc.date.accessioned | 2017-12-07T19:40:43Z | - |
dc.date.available | 2017-12-07T19:40:43Z | - |
dc.date.issued | 2014 | pt |
dc.identifier.issn | 2046-2069 | pt |
dc.identifier.uri | http://hdl.handle.net/10773/20255 | - |
dc.description.abstract | A novel room-temperature white light emitter amide-cross linked alkyl/siloxane hybrid material (amidosil A) was produced by self-organization through the rational design of the precursor. This hybrid displays a highly complex hierarchical architecture composed of two lamellar bilayer structures, the relative spatial arrangement of which yields a multiplicity of ordered nanodomains with variable shapes and sizes, some of them persisting at the microscale. Macroscopically A was obtained as clusters of hydrophobic hemispherical and spherical micro-objects exhibiting a lettuce coral-like pattern, which represent unprecedented pieces of evidence illustrating the principles of self-similarity and demonstrating that the time scale of biomimetic morphogenesis in this non-bridged silsesquioxane is similar to that in biological systems. Heating metastable A above the order/disorder phase transition acted as an external quake driving the material to another metastable state, which has persisted for more than 12 months, and was manifested as a marked change of all the macroscopic properties. The occurrence of the self-organization process operating on A, instead of a self-directed assembly, is primarily associated with the formation/rupture of hydrogen bonds, therefore supporting that these interactions are critical factors dictating on what side of the self-assembly/self-organization boundary a non-bridged silsesquioxane system will evolve. | pt |
dc.language.iso | eng | pt |
dc.publisher | ROYAL SOC CHEMISTRY | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/100896/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876-PPCDTI/112774/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/5876/135918/PT | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/COMPETE/132936/PT | pt |
dc.rights | openAccess | por |
dc.subject | ORGANIC-INORGANIC HYBRIDS | pt |
dc.subject | BRIDGED SILSESQUIOXANES | pt |
dc.subject | ALKYL CHAINS | pt |
dc.subject | LAMELLAR STRUCTURE | pt |
dc.subject | QUANTUM YIELDS | pt |
dc.subject | LIGHT EMISSION | pt |
dc.subject | MONOLAYERS | pt |
dc.subject | SILICA | pt |
dc.subject | PHOTOLUMINESCENCE | pt |
dc.subject | CONFORMATION | pt |
dc.title | Fractality and metastability of a complex amide cross-linked dipodal alkyl/siloxane hybrid | pt |
dc.type | article | pt |
dc.peerreviewed | yes | pt |
ua.distribution | international | pt |
degois.publication.firstPage | 59664 | pt |
degois.publication.issue | 103 | pt |
degois.publication.lastPage | 59675 | pt |
degois.publication.title | RSC ADVANCES | pt |
degois.publication.volume | 4 | pt |
dc.relation.publisherversion | 10.1039/c4ra11300d | pt |
dc.identifier.doi | 10.1039/c4ra11300d | pt |
Appears in Collections: | CICECO - Artigos |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Fractality and metastability of a complex amide cross-linked dipodal alkylsiloxane hybrid_10.1039c4ra11300d.pdf | 6.01 MB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.