Cucurbiturils Monofunctionalized on the Methylene Bridge and Their Host-Guest Properties

Logo poskytovatele
Logo poskytovatele
Logo poskytovatele

Varování

Publikace nespadá pod Ústav výpočetní techniky, ale pod Přírodovědeckou fakultu. Oficiální stránka publikace je na webu muni.cz.
Autoři

KANDRNÁLOVÁ Markéta ŠINDELÁŘ Vladimír

Rok publikování 2021
Druh Článek v odborném periodiku
Časopis / Zdroj European Journal of Organic Chemistry
Fakulta / Pracoviště MU

Přírodovědecká fakulta

Citace
www https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/ejoc.202100705
Doi http://dx.doi.org/10.1002/ejoc.202100705
Klíčová slova Cucurbiturils; Host-guest complexes; Macrocycles; Monofunctionalization; Self-assembly
Popis Monofunctionalization of cucurbiturils is essential for transferring these potent supramolecular macrocyclic hosts into real-world application. Here, we present the synthesis of cucurbit[6]urils 1 and 2 in which one methylene bridge is modified by a single substituent containing a nitro or an ammonium group. We investigated host-guest properties in water and 0.2 M NaCl using H-1 NMR and isothermal titration calorimetry, particularly for 2. The macrocycle 2 self-associated into dimeric aggregates in pure water, but readily disassembled in the presence of NaCl or organic cations. Cucurbit[7]uril was able to encapsulate the ammonium substituent of 2 inside its cavity resulting in a complex of 1 : 1 stoichiometry with an association constant of 3.1x10(5) M-1. The presented host-guest properties together with further possible derivatization showcase the potential of cucurbiturils modified in the methylene position such as 1 and 2 for the development of advanced supramolecular systems.
Související projekty:

Používáte starou verzi internetového prohlížeče. Doporučujeme aktualizovat Váš prohlížeč na nejnovější verzi.

Další info