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- Esters with favorable binding toward the cucurbit uril (CB) supramolecular host are used as temporary signals to form a transient complex with CB, replacing a CB -bound guest. The esters are hydrolytically unstable, generating acids and alcohols, which do not bind to CB, leading to guest reuptake.
pubs.acs.org/doi/10.1021/jacs.2c02695Transient Host–Guest Complexation To Control Catalytic Activity
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Mar 9, 2017 · Non-covalent host–guest interactions are an effective tool to introduce switching and functional properties into materials. This review focuses on the achievement of selective molecular adhesion, self-healing, toughness, and actuation properties.
- Yoshinori Takashima, Akira Harada
- 2017
Heyne et al.69 also reported the formation of emissive H-aggregates of the positively charged thiazole orange (TO) dye, attached non-covalently to the anionic SO 3− groups present at the upper rim of the sulfated CX4 derivative (SCX4), through the formation of host–guest complexes with a 3: 1 dye-to-host binding ratio.
Host–guest based supramolecular assemblies, as constructed through non-covalent interactions, are highly dynamic in nature, and can be tuned easily using their responses to various external stimuli, providing a convenient approach to achieve excellent functional materials.
- Mhejabeen Sayed, Haridas Pal
- 2021
Host-guest interaction refers to a non-covalent interaction between two molecules, where one molecule acts as the host and the other as the guest. The host molecule has a cavity or cleft that allows the guest molecule to fit in, forming a complex.
Host–guest complexes, also known as inclusion complexes, are supramolecular structures [1, 2] composed of two or more molecules or ions that are maintained through noncovalent interactions in a reversible way (Figure 1).
May 18, 2022 · In all, by transient complex formation with unstable ester signals inside a supramolecular host we have control over and can numerically predict the rate of a second chemical reaction by tuning the catalyst liberation time and hence the free catalyst concentration in solution.
In aqueous media, transient non-covalent guest–host complexes form with CDs as a result of induced or permanent dipole–dipole (van der Waals' type) interactions, hydrogen-bonding interactions, π–π interactions, and the hydrophobic properties of the guest molecule.
