| Autor: |
Angela Candreva, Giuseppe Di Maio, Francesco Parisi, Francesca Scarpelli, Alessandra Crispini, Nicolas Godbert, Loredana Ricciardi, Antonello Nucera, Carmen Rizzuto, Riccardo C. Barberi, Marco Castriota, Massimo La Deda |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Chemosensors, Vol 10, Iss 5, p 176 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2227-9040 |
| DOI: |
10.3390/chemosensors10050176 |
| Popis: |
Until now, the ability to form a self-assembled monolayer (SAM) on a surface has been investigated according to deposition techniques, which in turn depend on surface-coater interactions. In this paper, we pursued two goals: to form a SAM on a gold nanosurface and to correlate its formation to the nanosurface curvature. To achieve these objectives, gold nanoparticles of different shapes (spheres, rods, and triangles) were functionalized with a luminescent thiolated bipyridine (Bpy-SH), and the SAM formation was studied by investigating the photo-physics of Bpy-SH. We have shown that emission wavelength and excited-state lifetime of Bpy-SH are strongly correlated to the formation of specific aggregates within SAMs, the nature of these aggregates being in close correlation to the shape of the nanoparticles. Micro-Raman spectroscopy investigation was used to test the SERS effect of gold nanoparticles on thiolated bipyridine forming SAMs. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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