Synthesis and Fluorescence Properties of Novel Transmembrane Probes and Determination of Their Orientation within Vesicles

Abstract

Ein kontinuierlicher Wechsel zwischen magnetischen High‐Spin‐ und Low‐Spin‐Zuständen wird durch Einstrahlen von rotem bzw. grünem Laserlicht erreicht. In der Zuschrift auf berichten S. R. Batten et al. über ein Metallosupramolekül, bei dem durch Temperaturwechsel oder durch Einstrahlen von Licht ein Spin‐Crossover(SCO)‐Schalten möglich ist. Das SCO‐Verhalten hängt zudem von der Gegenwart und der Art eingeschlossener Lösungsmittelmoleküle in der porösen Kristallstruktur ab.

A Stimuli‐Responsive, Photoluminescent, Anthracene‐Based Liquid Crystal: Emission Color Determined by Thermal and Mechanical Processes

“…These absorption spectral features are similar to those of a 2,6-diethynylanthracene derivative reported in a previous study. [49] The existence of the monomeric state for 1 in chloroform (10 À3 M) is supported by the results of infrared measurements (see Supporting Information). The emission spectrum of 1 in chloroform (10 À3 M) (Fig.…”

Fluorescent Analogs of Biomolecular Building Blocks: Design, Properties, and Applications

“… a λ, ε, and τ are given in nm, 10 3 M −1 cm −1 , and ns respectively b Only ε values for the most intense peak are given. c Data extracted from graphs 197 d

Only a spectroscopic study in dimyristoylphosphatidylcholine (DMPC) vesicles is reported, λ abs and λ em are extracted from graphs, and only the most contributing τ is given.

…”

New Transmembrane Polyene Bolaamphiphiles as Fluorescent Probes in Lipid Bilayers

“…[5] Some transmembrane bolaamphiphiles have been produced previously for altering specific membrane properties: for example, compounds with p-benzoquinone or anthraquinone groups to change the redox behavior, [6] or conjugated polyenes derived from the natural product bixine to modify the charge-transfer rate across the bilayer. [7] Furthermore, bolaamphiphiles that contain photochemically reactive benzophenone [8] or diazirine [9] groups, or emitting fluorene [10] or anthracene groups, [11] have been also synthesized. A different but interesting fluorescent bolaform structure was also produced by linking two rhodamine 101 dye molecules with a C 32 linear chain.…”