1388152-22-4Relevant academic research and scientific papers
Switching diarylethenes reliably in both directions with visible light
Fredrich, Sebastian,G?stl, Robert,Herder, Martin,Grubert, Lutz,Hecht, Stefan
, p. 1208 - 1212 (2016)
A diarylethene photoswitch was covalently connected to two small triplet sensitizer moieties in a conjugated and nonconjugated fashion and the photochromic performance of the resulting compounds was investigated. In comparison with the parent diarylethene (without sensitizers) and one featuring saturated linkages, the conjugated photoswitch offers superior fatigue resistance upon visible-light excitation due to effective triplet energy transfer from the biacetyl termini to the diarylethene core. Our design makes it possible to switch diarylethenes with visible light in both directions in a highly efficient and robust fashion based on extending π-conjugation and by-product-free ring-closure via the triplet manifold. Flipping the spin: When biacetyl triplet sensitizers were linked to a dithienylethene core in a conjugated fashion, the photoswitching performance dramatically improved. This design makes it possible to switch diarylethenes with visible light in both directions in a highly efficient and robust fashion.
Photochromic organic solar cells based on diarylethenes
Janssen, René A. J.,Saes, Bart W. H.,Wienk, Martijn M.
, p. 30176 - 30185 (2020)
Photovoltaic devices that switch color depending on illumination conditions may find application in future smart window applications. Here a photochromic diarylethene molecule is used as sensitizer in a ternary bulk heterojunction blend, employing poly(4-butylphenyldiphenylamine) (poly-TPD) and [6,6]-phenyl-C61-butyric acid methyl ester (PC61BM) for the transport of holes and electrons, respectively. Sandwiched between two electrodes, the blend creates a photochromic photovoltaic device that changes color, light absorption, and photon-to-electron conversion efficiency in the visible spectral range after having been illuminated with UV light. This journal is
Sterically crowding the bridge of dithienylcyclopentenes for enhanced photoswitching performance
Goestl, Robert,Kobin, Bjoern,Grubert, Lutz,Paetzel, Michael,Hecht, Stefan
, p. 14282 - 14285 (2013/01/15)
Better switching: The introduction of bulky substituents into the bridge moiety of dithienylethenes led to derivatives exhibiting high photocyclization quantum yields. This novel and versatile form of substitution facilitated tuning of the switching performance without compromising on the optical and redox properties of the ring-open and ring-closed forms (see scheme). Copyright
