Light-Responsive Pyrazine-Based Systems: Probing Aromatic Diarylethene Photocyclization was written by Milic, Jovana V.;Schaack, Cedric;Hellou, Nora;Isenrich, Florin;Gershoni-Poranne, Renana;Neshchadin, Dmytro;Egloff, Sylvain;Trapp, Nils;Ruhlmann, Laurent;Boudon, Corinne;Gescheidt, Georg;Crassous, Jeanne;Diederich, Francois. And the article was included in Journal of Physical Chemistry C in 2018.Reference of 638-02-8 The following contents are mentioned in the article:
Here, we present an investigation of the photocyclization of novel aromatic diarylethene (DAE) systems 1-3 based on pyrazine, quinoxaline, and helicene scaffolds. These prospective photoswitches were designed using d. functional theory calculations and analyzed in solution and in the solid state by cyclic and rotating disk voltammetry, UV visible and transient absorption spectroscopy, as well as X-ray crystallog. Addnl., nucleus-independent chem. shift calculations were performed to investigate the influence of aromaticity on the photocyclization ability. While pyrazine-2,3-diyl-extended DAE system 1 demonstrated photoswitching ability with short lifetimes of the cyclized form, the more aromatic quinoxaline analog 2 did not feature any photocyclization. Further extension of these aromatic systems into helicene-DAE 3 resulted in the stabilization of the cyclized form through the conserved backbone aromaticity, accompanied by enhanced photochromism. This study paves the way toward the generation of aromatic DAE photoswitches for light-controlled mol. systems in the future. This study involved multiple reactions and reactants, such as 2,5-Dimethylthiophene (cas: 638-02-8Reference of 638-02-8).
2,5-Dimethylthiophene (cas: 638-02-8) belongs to benzothiophene derivatives. Benzothiophene scaffolds are of great importance due to its increased presence in bioactive molecules. The different substitution patterns in these heterocycles offer new opportunities for drug discovery and other applications in materials science.Reference of 638-02-8
Referemce:
Benzothiophene – Wikipedia,
Benzothiophene | C8H6S – PubChem