A Photochemical/Thermal Switch Based on 4,4'-Bis(benzimidazolio)stilbene: Synthesis and Supramolecular Properties.

Varování

Publikace nespadá pod Filozofickou fakultu, ale pod Středoevropský technologický institut. Oficiální stránka publikace je na webu muni.cz.

Autoři	KULKARNI Shantanu Ganesh JELÍNKOVÁ Kristýna NEČAS Marek PRUCKOVÁ Zdeňka ROUCHAL Michal DASTYCHOVÁ Lenka KULHÁNEK Petr VÍCHA Robert
Rok publikování	2020
Druh	Článek v odborném periodiku
Časopis / Zdroj	ChemPhysChem
Fakulta / Pracoviště MU	Středoevropský technologický institut
Citace
www	https://doi.org/10.1002/cphc.202000472
Doi	http://dx.doi.org/10.1002/cphc.202000472
Klíčová slova	stilbene switch; cucurbit[n]uril; cyclodextrins; molecular devices; host-guest systems
Popis	Stilbene derivatives are well-recognised substructures of molecular switches based on photochemically and/or thermally induced (E)/(Z) isomerisation. We combined a stilbene motif with two benzimidazolium arms to prepare new sorts of supramolecular building blocks and examined their binding properties towards cucurbit[n]urils (n=7, 8) and cyclodextrins (beta-CD, gamma-CD) in water. Based on the(1)H NMR data and molecular dynamics simulations, we found that two distinct complexes with different stoichiometry, i. e., guest@beta-CD and guest@beta-CD2, coexist in equilibrium in a water solution of the (Z)-stilbene-based guests. We also demonstrated that the bis(benzimidazolio)stilbene guests can be transformed from the (E) into the (Z) form via UV irradiation and back via thermal treatment in DMSO.
Související projekty:	CERIT Scientific Cloud CEITEC 2020