The synthesis of novel perylene-like dyes and their aggregation properties in Langmuir and Langmuir–Blodgett films

Supramolecular Architecture and Electrical Properties of a Perylene Derivative in Physical Vapor Deposited Films

“…Therefore, a broad range of application is based on perylene thin films, such as light-emitting diodes (LEDs), 9 transistors, 10 solar cells 8 and a variety of sensors for detecting dopamine, 11 pesticides, 7 and metallic ions 12,13 . Langmuir, 14,15 Langmuir-Blodgett (LB), 16,17 Layer-by-Layer (LbL), 16,18 spin-coating, 19,20 casting 21,22 and physical vapor deposition (PVD) 10,23 techniques are the most frequently applied in the fabrication of organic-based nanostructured films. In particular, PVD is one of the most common deposition technologies of small organic molecules, displaying high control on the supramolecular architecture of the films 24,25 Indeed, the molecular organization plays an important role and mediates the electrical and optical properties of the films toward optimization of the device performance 26 .…”

Molecular organization of perylene derivatives in Langmuir–Blodgett multilayers

“…Under experimental conditions well expressed diffraction maxima were seen for the LB films formed of 3-8 dipping cycles (dipping and withdrawing the substrate). The average period of the dye layers d % 1.5 nm (Table 1) is comparable to the dye molecular dimension [30,21] and slightly decreases with the number of deposited layers. The small changes in the layer period can be explained with different layer-substrate and layer-layer interaction.…”

“…In thin layer films created by spin-coating, drop-casting or Langmuir-Blodgett techniques, where solvent molecules evaporate, the self-organization phenomenon is even greater than in concentrated solutions [7,9,21,22,[29][30][31]. This is clearly observed by comparing absorption and luminescence spectra.…”

“…Perylene derivatives depending on hydrocarbon chains substituted in the lateral positions or/and atoms attached to the main perylene core have n or p semiconductor character [7,[13][14][15][16][17]. It was also shown that the length of hydrocarbon (alkoxy or alkyl) chains and the presence of halogen atoms in so-called bay positions have a great impact on the dye molecule aggregation in highly concentrated structures, such as thin films created with the use of different techniques or molecular crystals [7,[9][10][11][18][19][20][21][22][23][24]. The control of the molecular arrangement is necessary to create efficient optical devices characterized by high luminescence quantum yield and charge carriers' mobility at the same time.…”

Photometric Detection of Nitric Oxide Using a Dissolved Iron(III) Corrole as a Sensitizer

“…In that work, the amphiphilicity of the iron(III) corrole is utilized for self‐assembly, which is known for only very few corroles . Additionally, amphiphilicity can be used to control the supramolecular morphology by use of the LB technique …”