☆ 4.6 Article

Combining Proton and Electron Transfer to Modulate the Stability of Cucurbit[7]uril Complexes

LANGMUIR (2012)

期刊

LANGMUIR

卷 28, 期 42, 页码 15075-15079

出版社

AMER CHEMICAL SOC

DOI: 10.1021/la303258g

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Chemistry, Multidisciplinary Chemistry, Physical Materials Science, Multidisciplinary

资金

NSF [CHE-0848637]
[CHE-0946858]
Division Of Chemistry
Direct For Mathematical & Physical Scien [0848637] Funding Source: National Science Foundation
Division Of Chemistry
Direct For Mathematical & Physical Scien [0946858] Funding Source: National Science Foundation

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摘要

(Ferrocenylmethyl)methylammonium (1H(+)) is an excellent cationic guest for inclusion complexation by the cucurbit[7]uril host. However, deprotonation of the guest leads to a decrease of 14.8 kJ mol(-1) in the overall stability of its inclusion complex, and one-electron oxidation of the guest's ferrocene residue further diminishes the complex stability by another 12.3 kJ mol(-1). Overall, guest deprotonation followed by its oxidation constitutes an accessible method to lower the equilibrium association constant for the CB7 center dot 1H(+) complex by more than 4 orders of magnitude.

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