Self-assembly of acridine orange dye at a mica/solution interface: Formation of nanostripe supramolecular architectures

Intercalation and configurations of organic dye acridine orange in a high-charge montmorillonite as influenced by dye loading

“…The amount of aggregated AO increased with increasing layer charge of clay mineral templates [13]. The results from this study agreed well with these previous studies [13,26,38,39] and confirmed a change in interlayer configuration of AO at a loading level 0.8 mmol/kg.…”

“…Thus, the intercalation Also, what could be seen from the simulation were the relative concentrations of N in the interlayer of SAz-1. AO molecules were stacked in a face-to-face configuration with the slip angle of 60˚via p-p interactions on to the surface of mica with each AO molecule occupying a surface area of about 100 Å 2 [38]. In comparison, the AO adsorption density on anatase was about 92 Å 2 per AO molecule [39].…”

Effect of organic solvents on J aggregation of pseudoisocyanine dye at mica/water interfaces: Morphological transition from three-dimension to two-dimension

“…Fluorescence microscope images under linearly polarized light excitation were obtained by using a polarizer (Olympus; U-PO or U-AN) mounted in the path of this excitation beam. AFM topographical images were recorded with a Nanoscope IIIa system (Digital Instruments) operating at the tapping mode in liquid phase [12]. Samples for the AFM measurements were prepared by placing a PIC solution of mixed solvents on the cleaved mica substrate in a liquid cell unit (Digital Instruments).…”

“…Unlike the surfactant interfacial assemblies, a combination of π-π stacking and electrostatic interactions is primarily responsible for their characteristic organization. Despite a multitude of studies available on structural/optical properties of the dye solid (or dry) films, in situ investigations and the knowledge of the supramolecular structure of the aggregates produced at the solid/liquid interface is fragmentary [11,12]. For a better understanding of characteristic features of the dye aggregates or assemblies at the interface, we have investigated the structures of a molecular aggregate of pseudoisocyanine (PIC) dye at a mica/water interface by using various microscopic techniques [13][14][15].…”

Supramolecular architecture, spectroscopic properties and stability of C.I. Basic Violet 10 (Rhodamine B) at high concentration

“…It is well known that dye molecules tend to form supramolecular architectures via self-assembly in solution or in adsorbed states [8][9][10][11][12][13][14][15]. For example, Tian et al [3,16] fabricated lowdimensional nanorods and nanospheres of a stilbazolium-like organic dye with highly monodisperse size using a self-assembly method.…”