Single-molecule force spectroscopy of supramolecular heterodimeric capsules

Schröder T, Geisler T, Walhorn V, Schnatwinkel B, Anselmetti D, Mattay J (2010)
Physical Chemistry Chemical Physics 12(36): 10981-10987.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The specific interaction of a supramolecular binding motif was quantitatively evaluated by dynamic single-molecule force spectroscopy (SMFS) using an atomic force microscope (AFM). The supramolecular capsule forms by two different cavitands stitched together by four hydrogen bonds between carboxylic acid and pyridyl groups. The tetra(carboxyl) cavitand is monofunctionalized at the lower rim with a flexible poly(ethylene glycol) linker and attached to the AFM sensor tip. Single-molecule association experiments are accomplished using a diluted self-assembled monolayer (SAM) of the tetra(pyridyl) cavitand on a gold substrate. The measured single-molecule dissociation forces of the heterodimeric capsule represent the mechanical stability of the supramolecular system and allow a quantitative evaluation of the interaction according to the Bell-Evans model yielding dissociation rate constant k(off) = (0.14 +/- 0.14) s(-1), reaction length x(beta) = (0.56 +/- 0.076) nm and an estimated value of Delta G(0) = -27 kJ mol(-1).
Erscheinungsjahr
2010
Zeitschriftentitel
Physical Chemistry Chemical Physics
Band
12
Ausgabe
36
Seite(n)
10981-10987
ISSN
1463-9076
eISSN
1463-9084
Page URI
https://pub.uni-bielefeld.de/record/1793915

Zitieren

Schröder T, Geisler T, Walhorn V, Schnatwinkel B, Anselmetti D, Mattay J. Single-molecule force spectroscopy of supramolecular heterodimeric capsules. Physical Chemistry Chemical Physics. 2010;12(36):10981-10987.
Schröder, T., Geisler, T., Walhorn, V., Schnatwinkel, B., Anselmetti, D., & Mattay, J. (2010). Single-molecule force spectroscopy of supramolecular heterodimeric capsules. Physical Chemistry Chemical Physics, 12(36), 10981-10987. doi:10.1039/c0cp00227e
Schröder, T., Geisler, T., Walhorn, V., Schnatwinkel, B., Anselmetti, D., and Mattay, J. (2010). Single-molecule force spectroscopy of supramolecular heterodimeric capsules. Physical Chemistry Chemical Physics 12, 10981-10987.
Schröder, T., et al., 2010. Single-molecule force spectroscopy of supramolecular heterodimeric capsules. Physical Chemistry Chemical Physics, 12(36), p 10981-10987.
T. Schröder, et al., “Single-molecule force spectroscopy of supramolecular heterodimeric capsules”, Physical Chemistry Chemical Physics, vol. 12, 2010, pp. 10981-10987.
Schröder, T., Geisler, T., Walhorn, V., Schnatwinkel, B., Anselmetti, D., Mattay, J.: Single-molecule force spectroscopy of supramolecular heterodimeric capsules. Physical Chemistry Chemical Physics. 12, 10981-10987 (2010).
Schröder, Tobias, Geisler, Thomas, Walhorn, Volker, Schnatwinkel, Björn, Anselmetti, Dario, and Mattay, Jochen. “Single-molecule force spectroscopy of supramolecular heterodimeric capsules”. Physical Chemistry Chemical Physics 12.36 (2010): 10981-10987.

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