Spectroscopic Studies of the Interactions between a Cationic Cyanine Dye and a Synthetic Phyllosilicate: From Photophysics to Hybrid Materials

Abstract

The interaction of the cationic organic dye Astrazon orange R (AO-R) with the synthetic phyllosilicate Laponite leads to very interesting hybrid materials. Indeed, the Laponite nanoparticles modify the photophysical properties of AO-R, inducing a stabilization of its excited emissive state by preventing ultrafast isomerization. The long-lived emissive clay-dye hybrid complex can be used to develop efficient photoinitiating systems, leading to organic-inorganic hybrid crosslinked polymer materials.

Noncentrosymmetric Cu(II) Layered Hydroxide: Synthesis, Crystal Structure, Nonlinear Optical, and Magnetic Properties of Cu2(OH)3(C12H25SO4)

“…Layered materials have long proved to be materials of choice in the field of organic–inorganic hybrid systems. , Among these materials, one may quote layered oxalate, layered double or simple hydroxides (LDH or LSH), clays, , hexathiohypodiphosphates (MPS 3 ), , layered perovskite, or MX 4 -based layered perovskite-like materials . Hybrid materials based on these systems can have interesting properties in magnetism, ,,, ferroelectricity, multiferroicity, − magnetoelectricity, luminescence, , trapping of molecular species, , anticorrosion, or catalysis, for instance.…”

Controversial Issues Related to Dye Adsorption on Clay Minerals: A Critical Review

“…Dye molecules, including ionic dyes, are more hydrophobic than inorganic ions. Therefore, the exchange of inorganic cations for organic ones causes the surface to become less hydrophilic with increasing amounts of the adsorbed organic molecules of a lower hydration energy [117][118][119][120]. The hydrophobic surface can bring about the reduction of the surface energy between particles and water molecules, which is another factor that contributes to the destabilization of the colloidal systems [72].…”

Tetrazolyl Porphyrin-Based Hydrogen-Bonded Organic Frameworks: Active Sites-Mediated Host-Guest Synergy for Advanced Antimicrobial Applications

“…At a doping concentration of 0.33%, on the one hand the electronic structure of the whole material facilitated the π−π* transition to the maximum, resulting in an enhancement of Soret band absorption. On the other hand, the adopted configuration improved the stability of the excited molecules, 47 leading to weakening of energy dissipation caused by molecular motions, thus improving the energy utilization for FRET between porphyrins and MB as well as 3 O 2 . 3.7.…”