Naslov
Anion Binding Properties of Homocyclopeptides in Acetonitrile and Dimethyl Sulfoxide

Autori
Horvat, Gordan ; Rinkovec, Tamara ; Tarana, Siniša ; Vidović, Nikolina ; Speranza, Giovanna ; Tomišić, Vladislav

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
III. Simpozij supramolekulske kemije : knjiga sažetaka / Frkanec, Leo ; Namjesnik, Danijel ; Tomišić, Vladislav - Zagreb : Institut Ruđer Bošković, 2019, 18-18

ISBN
978-953-7941-27-7

Skup
3. simpozij supramolekulske kemije (Supramolecular Chemistry 2019)

Mjesto i datum
Zagreb, Hrvatska, 03.12.2019

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
Anion receptors ; cyclopeptides ; solvation ; thermodynamics

Sažetak
The anion interactions with various natural and synthetic receptors are subject of an intensive and quickly-developing research field of supramolecular chemistry. Modern studies of anionic receptors often use the basic coordination and recognition principles taken from the receptors observed in natural systems. A class of macrocyclic compounds that contains amide groups in their backbone and can be used as selective receptors of anionic species are cyclopeptides. Rather good complexation properties of these compounds can be attributed to the remarkable hydrogen-bonding donor properties of the amide groups. In addition, the well-structured, yet sufficiently flexible structure of the cyclopeptides, as well as the presence of multiple functional groups oriented in the appropriate direction, with the additional possibility of modifying the peptide backbone and/or the side chains, contribute to the high efficiency and selectivity for anion binding of these receptors. Here we present the studies of halides and oxoanions binding with several homocyclopeptide ligands in acetonitrile and dymethylsulfoxide carried out by NMR and microcalorimetric titrations as well as molecular dynamics simulations. The aim of the investigation was to obtain as detailed as possible insight into the thermodynamic and structural characteristics of the receptors and their complexation reactions, and to rationalize the relation between structure and reactivity of the investigated cyclopeptides. The solvent effect on equilibria of the studied reactions was particularly addressed.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

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