The Effect of Layered Sodium–Magadiite on the Photochromic Reversibility of Diarylethene Immobilized on Its Surfaces

Abstract

Diarylethene covalently bonded to the silanol oxygen of the layered surfaces of magadiite was seen to undergo a more improved photochromic reversibility than a corresponding silylated analog in ethanol without fixation to the magadiite.

Materials design of layered silicates through covalent modification of interlayer surfaces

“…g-Methacryloxypropyltrimethoxysilane is immobilized onto magadiite and used for copolymerization with methylmethacrylate monomers, 180 which provides a unique pathway to prepare nanocomposites with covalent bonding, because normally clay-polymer nanocomposites are prepared by the use of organoammonium exchanged clays with various polymers with non-covalent interactions. Shindachi et al reported the multistep immobilization of diarylethene 181,182 with bromo-terminal (4-(bromomethyl)phenylchlorodimethylsilane) onto C 16 TMAmagadiite. Immobilized bromo was used for further reaction with trialkylamine.…”

Preparation and Characterization of Rhodamine 6G/Alkyltrimethylammonium/Laponite Hybrid Solid Materials with Higher Emission Quantum Yield

“…Moreover, it is also well-known that the intercalated molecules form an ordered structure in the 2D interlayer nanospace spontaneously; that is, this indicates that solid materials with unique functions, such as anisotropic, nonlinear, and nonequilibrium properties, can be easily prepared. Considering these useful characteristics, many researchers have studied the hybridization of various functional organic compounds with ion-exchangeable layered clay and those various characterizations. − ,− Additionally, clay has no absorption band in the visible range, and many researchers have also studied the incorporation of various photofuntional organic compounds in the interlayer nanospace. Thus, the hybridization of laser−dye molecules with various clays such as laponite, montmorillonite, saponite, and so on, has been investigated by many researchers. − ,− ,− Such hybridization systems of laser−dye and clay are very effective for clarifying the basic principles for function/structural control of the organic/clay hybrid materials such as the adsorption state/behavior of laser−dye, the steric/electronic interaction between laser−dye and clay, and so on.…”

“…Considering these useful characteristics, many researchers have studied the hybridization of various functional organic compounds with ion-exchangeable layered clay and those various characterizations. − ,− Additionally, clay has no absorption band in the visible range, and many researchers have also studied the incorporation of various photofuntional organic compounds in the interlayer nanospace. Thus, the hybridization of laser−dye molecules with various clays such as laponite, montmorillonite, saponite, and so on, has been investigated by many researchers. − ,− ,− Such hybridization systems of laser−dye and clay are very effective for clarifying the basic principles for function/structural control of the organic/clay hybrid materials such as the adsorption state/behavior of laser−dye, the steric/electronic interaction between laser−dye and clay, and so on. From the point of view of the optical function of laser−dye/clay nanohybrid solid materials, these hybrid materials can make it possible to convert the lasing medium of dye−laser oscillator from liquid to solid.…”

Photochromic Intercalation Compounds

“…The interconversion was also observed for diarylethene, which was covalently immobilized to the surface silanol groups on magadiite [145,146].…”