Supramolecular effects in dendritic systems containing photoactive groups
Fuente:
Redalyc
Gespeichert in:
| 1. Verfasser: | |
|---|---|
| Format: | Artículo científico |
| Sprache: | en |
| Veröffentlicht: |
Academia Brasileira de Ciências
2000
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1876491072666861568 |
|---|---|
| author | Gianluca Camillo Azzellini |
| author_facet | Gianluca Camillo Azzellini |
| contents | Supramolecular effects in dendritic systems containing photoactive groups Gianluca Camillo Azzellini Multidisciplinaria (Ciencias Naturales y Exactas) Dendrimers Azobenzene Ruthenium Complexes Supramolecular Photochemistry In this article are described dendritic structures containing photoactive groups at the surface or in the core. Theobserved supramolecular effects can be attributed to the nature of the photoactive group and their locationin the dendritic architecture. The peripheric azobenzene groups in these dendrimeric compounds can beregarded as single residues that retain the spectroscopic and photochemical properties of free azobenzenemoiety. The E and Z forms of higher generation dendrimer, functionalized with azobenzene groups, showdifferent host ability towards eosin dye, suggesting the possibility of using such dendrimer in photocontrolledhost-guest systems. The photophysical properties of many dendritic-bipyridine ruthenium complexes havebeen investigated. Particularly in aerated medium more intense emission and a longer excited-state lifetimeare observed as compared to the parent unsubstituted bipyridine ruthenium complexes. These differencescan be attributed to a shielding effect towards dioxygen quenching originated by the dendritic branches. 2000 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32772104 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.72 |
| format | Artículo científico |
| id | redalyc_32772104 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | Supramolecular effects in dendritic systems containing photoactive groups Gianluca Camillo Azzellini Multidisciplinaria (Ciencias Naturales y Exactas) Dendrimers Azobenzene Ruthenium Complexes Supramolecular Photochemistry Supramolecular effects in dendritic systems containing photoactive groups Gianluca Camillo Azzellini Multidisciplinaria (Ciencias Naturales y Exactas) Dendrimers Azobenzene Ruthenium Complexes Supramolecular Photochemistry In this article are described dendritic structures containing photoactive groups at the surface or in the core. Theobserved supramolecular effects can be attributed to the nature of the photoactive group and their locationin the dendritic architecture. The peripheric azobenzene groups in these dendrimeric compounds can beregarded as single residues that retain the spectroscopic and photochemical properties of free azobenzenemoiety. The E and Z forms of higher generation dendrimer, functionalized with azobenzene groups, showdifferent host ability towards eosin dye, suggesting the possibility of using such dendrimer in photocontrolledhost-guest systems. The photophysical properties of many dendritic-bipyridine ruthenium complexes havebeen investigated. Particularly in aerated medium more intense emission and a longer excited-state lifetimeare observed as compared to the parent unsubstituted bipyridine ruthenium complexes. These differencescan be attributed to a shielding effect towards dioxygen quenching originated by the dendritic branches. 2000 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32772104 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.1 Vol.72 |
| title | Supramolecular effects in dendritic systems containing photoactive groups |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) Dendrimers Azobenzene Ruthenium Complexes Supramolecular Photochemistry |
| url | https://www.redalyc.org/articulo.oa?id=32772104 |