Jump to main content
Jump to site search

Issue 103, 2014
Previous Article Next Article

Fractality and metastability of a complex amide cross-linked dipodal alkyl/siloxane hybrid

Author affiliations

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.

Graphical abstract: Fractality and metastability of a complex amide cross-linked dipodal alkyl/siloxane hybrid

Back to tab navigation

Supplementary files

Publication details

The article was received on 26 Sep 2014, accepted on 31 Oct 2014 and first published on 31 Oct 2014


Article type: Paper
DOI: 10.1039/C4RA11300D
RSC Adv., 2014,4, 59664-59675

  •   Request permissions

    Fractality and metastability of a complex amide cross-linked dipodal alkyl/siloxane hybrid

    S. C. Nunes, C. B. Ferreira, R. A. S. Ferreira, L. D. Carlos, M. C. Ferro, J. F. Mano, P. Almeida and V. de Zea Bermudez, RSC Adv., 2014, 4, 59664
    DOI: 10.1039/C4RA11300D

Search articles by author

Spotlight

Advertisements