Cover Feature: Light‐Responsive Oligothiophenes Incorporating Photochromic Torsional Switches (Chem. Eur. J. 65/2022)

Sterically Hindered Diaryl Benzobis(thiadiazole)s as Effective Photochromic Switches.

Amino-substituted diazocines as pincer-type photochromic switches

Azobenzenes are robust, reliable, and easy to synthesize photochromic switches. However, their high conformational flexibility is a disadvantage in machine-like applications. The almost free rotation of the phenyl groups can be restricted by bridging two ortho positions with a CH(2)CH(2) group, as realized in the dihydrodibenzo diazocine framework. We present the synthesis and properties of 3,3...

Isomerization dynamics of photochromic spiropyran molecular switches in phospholipid bilayers.

Transient absorption spectroscopy was used to investigate the dynamics of the photochromic indolinobenzospiropyran reaction in toluene solution and in phosphatidylcholine bilayers (1,2-dimyristoyl-sn-glycero-3-phosphocholine (DMPC), 1,2-dipalmitoyl-sn-glycero-3-phosphocholine (DPPC), and 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC)). After excitation with UV light, colorless (R/S)-2-(3',3'-d...

Microsoft Word - Wang J Biol Chem Revised

From Key Laboratory of Photosynthesis and Molecular Environment Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China , Institute of Molecular Cell Biology, Hebei Normal University, Shijiazhuang, Hebei Province, 050016, China, and Department of Plant Biology, College of Biological Sciences,...

Hole-vibronic coupling in oligothiophenes: impact of backbone torsional flexibility on relaxation energies.

Density functional theory calculations together with highly resolved gas-phase ultraviolet photoelectron spectroscopy have been applied to oligothiophene chains with up to eight thiophene rings. One of the important parameters governing the charge transport properties in the condensed phase is the amount of energy relaxation upon ionization. Here, we investigate the impact on this parameter of ...