Photoaktive hybride Nanomaterialien für gezieltes Anbinden, Markieren und Töten von Antibiotika‐resistenten Bakterien

Aqueous Anion Receptors through Reduction of Subcomponent Self‐Assembled Structures

“…Furthermore, the robustness and positive charge of 4 suggest that it might be used for guest delivery within living cells. [23] Received: September 16, 2013Revised: October 31, 2013Published online: December 27, 2013 . Keywords: anion recognition · covalent cage compounds · host-guest systems · self-assembly · supramolecular chemistry…”

On the Reversible Photoisomerization of Spiropyran‐Modified Zeolite L Single Crystals

“…[7] Such systems may become even more efficient if the dyes embedded inside the porous silica nanoparticles aggregate as little as possible, as well as if the dyes are completely isolated from the biosystem being labeled. This problem may be addressed by combining spiropyrans with versatile porous materials, such as zeolite L, which are known to encapsulate organic dyes in the monomeric form and to protect them against the outer chemical environment.Zeolite L is a porous aluminosilicate material consisting of thousands of one-dimensional nanochannels parallel to each other, which run throughout the long axis of the crystal.[8] Zeolite L can be used not only as luminescent devices, [9] in bioimaging, [10] or in photodynamic treatments, [11] but also in many other applications.[12] This class of crystals can still be functionalized on glass, indium-tin oxide or other substrates and can be synthesized from 50 nm up to 20 mm, [13] which may be strategic, depending on the application. SP-functionalized zeolite L crystals with encapsulated dyes may be an interesting option to make new dual emitters, which can be used in bio-imaging experiments, even without taking advantage of energy transfer between encapsulated dyes and SP.…”

“…[8] Zeolite L can be used not only as luminescent devices, [9] in bioimaging, [10] or in photodynamic treatments, [11] but also in many other applications.…”

“…[8] Zeolite L can be used not only as luminescent devices, [9] in bioimaging, [10] or in photodynamic treatments, [11] but also in many other applications. [12] This class of crystals can still be functionalized on glass, indium-tin oxide or other substrates and can be synthesized from 50 nm up to 20 mm, [13] which may be strategic, depending on the application.…”

“…[11] Herein we show for the first time the reversible photoisomerization of a spiropyran derivative (at the single crystal level) functionalized at the channel entrances of zeolite L and discuss the use of such single crystals as dual emitters in the field of bio-imaging. In a first step zeolite L can be loaded with a green-emitting dye (pyronine) and afterwards its outer surface can be functionalized with a spiropyran derivative.…”