Self-assembly to ordered films of the homoassociate solutions of the tetrasodium salt of 5,10,15,20-tetrakis(4-sulfonatophenyl)porphyrin dihydrochloride

Micellization of copolymers via noncovalent interaction with TPPS and aggregation of TPPS

“…The aggregation of dye is also accompanied by spectral shifts due to the excitonic interactions between the chromophores [22]. J-aggregates, proposed to be stabilized through electrostatic and hydrogen-bonding interactions between the positively charged center of one H 4 TPPS 2 molecule electrostatic and the negatively charged peripheral sulfonate groups of the adjacent molecules [23], show an intense narrow absorption band that is red-shift with respect to the absorption band of the monomer [16]. H-dimers or aggregates, resulting from the association of -conjugated porphyrin rings [24], show a blue-shift Soret band.…”

Nano-assembled thin film gas sensors. IV. Mass-sensitive monitoring of humidity using quartz crystal microbalance (QCM) electrodes

“…It is known that the annealing of TSPP up to 300 • C leads exclusively to the loss of the bound water [36]. Interestingly, the film sensitivity could be slightly improved as compared with the response measured before annealing, which can be owing to the purification of the film at higher temperature and availability of the higher amount of binding sites for water.…”

“…PSS that was assembled in the PDDA/PSS films is composed of sodium salt of the sulfonic acid and therefore cannot participate in the water adsorption. It is known that TSPP, in general, has equilibrium with water vapor of the surrounding atmosphere at room temperature [35,36]. That is, the increase of the surrounding relative humidity leads to the higher water content present in TSPP.…”

Assemblies of TPPS4 porphyrin investigated by TEM, SPM and UV–vis spectroscopy

“…In the dry films, an increased absorption appears in the region about 450 nm. This suggests that the simple dipole exciton coupling model, which explains the absorption spectra of the homoassociate solutions through two independent one-dimensional couplings (H-and J-aggregation), cannot be applied to the condensed phase and the collective 2D or 3D exiton model should be applied [33].…”