57090-41-2Relevant academic research and scientific papers
Electric field-induced isomerization of azobenzene by STM
Alemani, Micol,Peters, Maike V.,Hecht, Stefan,Rieder, Karl-Heinz,Moresco, Francesca,Grill, Leonhard
, p. 14446 - 14447 (2006)
The electric field applied between the tip of a scanning tunneling microscope and a metallic surface is shown to induce the reversible trans-cis isomerization of single azobenzene derivatives adsorbed on a Au(111) surface. The investigated molecule is sym
London Dispersion in Alkane Solvents
Strauss, Marcel A.,Wegner, Hermann A.
supporting information, p. 779 - 786 (2020/11/30)
The importance of London dispersion interactions in solution is an ongoing debate. Although the significance of dispersion for structure and stability is widely accepted, the degree of its attenuation in solution is still not properly understood. Quantita
Regular Two-Dimensional Arrays of Surface-Mounted Molecular Switches: Switching Monitored by UV-vis and NMR Spectroscopy
Santos Hurtado, Carina,Bastien, Guillaume,Ma?át, Milan,?to?ek, Jakub Radek,Dra?ínsky, Martin,Ron?evi?, Igor,Císa?ová, Ivana,Rogers, Charles T.,Kaleta, Ji?í
, p. 9337 - 9351 (2020/06/27)
Using solid-state 15N NMR spectroscopy, the cis/trans isomerization in a two-dimensional (2-D) array of surface-mounted azobenzene-based switches was detected for the first time. In order to achieve this, a new class of rod-shaped molecular switches, suit
Attraction or Repulsion? London Dispersion Forces Control Azobenzene Switches
Schweighauser, Luca,Strauss, Marcel A.,Bellotto, Silvia,Wegner, Hermann A.
supporting information, p. 13436 - 13439 (2015/11/09)
Large substituents are commonly seen as entirely repulsive through steric hindrance. Such groups have additional attractive effects arising from weak London dispersion forces between the neutral atoms. Steric interactions are recognized to have a strong influence on isomerization processes, such as in azobenzene-based molecular switches. Textbooks indicate that steric hindrance destabilizes the Z isomers. Herein, we demonstrate that increasing the bulkiness of electronically equal substituents in the meta-position decreases the thermal reaction rates from the Z to the E isomers. DFT computations revealed that attractive dispersion forces essentially lower the energy of the Z isomers.
Electron Spin Resonance Spectra of Sulfinamidyl Radicals and a Comparison of Hyperfine Splitting Constants with Sulfenamidyl and Sulfonamidyl Radicals
Mirua, Yozo,Nakamura, Yuji
, p. 1154 - 1159 (2007/10/02)
An ESR spectroscopic study of N-arylsulfinyl- and N-alkylsulfinyl-3,5-di-t-butylphenylaminyls (2) is described.The sulfinamidyls 2, generated by the reaction of the corresponding sulfinamides (7) with di-t-butyl diperoxyoxalate (DBPO) in benzene at 21 or
