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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Mazzuca, Claudia Venanzi, Mariano Drašar, Pavel Cardová, Lenka Gatto, Emanuela Lettieri, Raffaella Palleschi, Antonio Monti, Donato Placidi, Ernesto |
| Copyright Year | 2017 |
| Abstract | Chiral mesoscopic structures were obtained by Langmuir–Blodgett (LB) deposition of two tetrasteroid-porphyrins differing by the number of hydroxy groups functionalizing the steroid rings. The morphology of the porphyrin aggregates was characterized by spectroscopy (UV-Vis absorption, steady-state fluorescence, circular dichroism) and microscopy (fluorescence, scanning electrons, atomic force) techniques. Molecular Mechanics calculations were also carried out to analyze the hierarchical self-assembly process leading to the propagation of the structural properties of the tetrasteroid-porphyrin building blocks to the mesoscopic scale of the imaged chiral architectures. It has been found that, while the transfer of chiral information from the molecular to the nanoscale is determined by the winding of the tetrasteroid chains functionalizing the porphyrin scaffold, the morphology of the mesoscopic aggregates (rods or twisted ribbons) is determined by the amphiphilic (rods) or hydrophobic (ribbons) character of the outer surface of the interacting porphyrin nanostructures. |
| Starting Page | 639 |
| Ending Page | 649 |
| Page Count | 11 |
| File Format | HTM / HTML PDF |
| ISSN | 11440546 |
| Volume Number | 41 |
| Issue Number | 2 |
| Journal | New Journal of Chemistry |
| DOI | 10.1039/c6nj02947g |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Steroid Spectroscopy Langmuir\u2013Blodgett trough Fluorescence Hydrophobe Circular dichroism Self-assembly Microscopy Porphyrin Langmuir Chirality Blodgett Amphiphile |
| Content Type | Text |
| Resource Type | Article |
| Subject | Chemistry Materials Chemistry Catalysis |
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