Determination of interaction strength between corrole and phenol derivatives in aqueous media using atomic force microscopy

Iwona Szymanska, Eduard Dolusic, Wim Dehaen, Wouter Maes, Takashi Ito, Hanna Radecka

Research output: Contribution to journalArticle

Abstract

Atomic force microscopy (AFM) was used to measure single interaction forces between corrole (host) and phenol derivatives (guests) in aqueous media. A gold tip was modified with thiol derivatives of corrole via the Au-S covalent bond. Such a tip was used to measure adhesion forces with a planar gold substrate modified with thiol derivatives of phenol and ortho-nitrophenol in aqueous solutions. The mean force between the corrole and ortho-nitrophenol was higher than that between corrole and phenol, probably reflecting stronger hydrogen bond interaction in the former complex. In the presence of a supporting electrolyte (0.1 M K2SO4), the mean force increased, suggesting that electrostatic and pi-pi interactions play an essential role in the adhesion force. In addition, the adhesion force measured at pH 6.0 was larger than that at pH 10, reflecting the electrostatic repulsion at the higher pH. These behaviours are consistent with the potentiometric responses of a liquid membrane based on corrole to phenolic compounds. Also, the values of forces for the interaction between corrole and phenol derivatives showed the same tendency as energy calculated for these complexes. The Poisson method was used for the calculation of the single force of the chemical bond between the corrole host and the phenolic guests.
Original languageEnglish
Pages (from-to)555-563
Number of pages9
JournalSupramolecular Chemistry
Volume21
Issue number7
DOIs
Publication statusPublished - 2009

Fingerprint

Phenol
Atomic force microscopy
Derivatives
Adhesion
Sulfhydryl Compounds
Gold
Electrostatics
Liquid membranes
Covalent bonds
Chemical bonds
corrole
Electrolytes
Hydrogen bonds
Substrates

Keywords

  • phenol derivatives
  • corrole
  • atomic force microscopy
  • molecular recognition
  • aqueous media

Cite this

Szymanska, Iwona ; Dolusic, Eduard ; Dehaen, Wim ; Maes, Wouter ; Ito, Takashi ; Radecka, Hanna. / Determination of interaction strength between corrole and phenol derivatives in aqueous media using atomic force microscopy. In: Supramolecular Chemistry. 2009 ; Vol. 21, No. 7. pp. 555-563.
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Determination of interaction strength between corrole and phenol derivatives in aqueous media using atomic force microscopy. / Szymanska, Iwona; Dolusic, Eduard; Dehaen, Wim; Maes, Wouter; Ito, Takashi; Radecka, Hanna.

In: Supramolecular Chemistry, Vol. 21, No. 7, 2009, p. 555-563.

Research output: Contribution to journalArticle

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T1 - Determination of interaction strength between corrole and phenol derivatives in aqueous media using atomic force microscopy

AU - Szymanska, Iwona

AU - Dolusic, Eduard

AU - Dehaen, Wim

AU - Maes, Wouter

AU - Ito, Takashi

AU - Radecka, Hanna

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