Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles

Farah Benyettou, Xiaolong Zheng, Elizabeth Elacqua, Yu Wang, Parastoo Dalvand, Zouhair Asfari, John Carl Olsen, Dong Suk Han, Na'Il Saleh, Mourad Elhabiri, Marcus Weck, Ali Trabolsi

Research output: Contribution to journalArticle

Abstract

Sulfonated surface patches of poly(styrene)-based colloidal particles (CPs) were functionalized with cucurbit[7]uril (CB[7]). The macrocycles served as recognition units for diphenyl viologen (DPV2+), a rigid bridging ligand. The addition of DPV2+ to aqueous suspensions of the particles triggered the self-assembly of short linear and branched chainlike structures. The self-assembly mechanism is based on hydrophobic/ion-charge interactions that are established between DPV2+ and surface-adsorbed CB[7]. DPV2+ guides the self-assembly of the CPs by forming a ternary DPV2+(CB[7])2 complex in which the two CB[7] macrocycles are attached to two different particles. Viologen-driven particle assembly was found to be both directional and reversible. Whereas sodium chloride triggers irreversible particle disassembly, the one-electron reduction of DPV2+ with sodium dithionite causes disassembly that can be reversed via air oxidation. Thus, this bottom-up synthetic supramolecular approach allowed for the reversible formation and directional alignment of a 2D colloidal material.

Original languageEnglish (US)
Pages (from-to)7144-7150
Number of pages7
JournalLangmuir
Volume32
Issue number28
DOIs
StatePublished - Jul 19 2016

Fingerprint

Viologens
Self assembly
self assembly
Sodium chloride
Dithionite
Styrene
Ligands
Sodium
Sodium Chloride
Oxidation
Suspensions
ion charge
Electrons
Ions
sodium chlorides
Air
Oxidation-Reduction
cucurbit(7)uril
polystyrene
assembly

ASJC Scopus subject areas

  • Electrochemistry
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Materials Science(all)
  • Spectroscopy

Cite this

Benyettou, F., Zheng, X., Elacqua, E., Wang, Y., Dalvand, P., Asfari, Z., ... Trabolsi, A. (2016). Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles. Langmuir, 32(28), 7144-7150. https://doi.org/10.1021/acs.langmuir.6b01433

Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles. / Benyettou, Farah; Zheng, Xiaolong; Elacqua, Elizabeth; Wang, Yu; Dalvand, Parastoo; Asfari, Zouhair; Olsen, John Carl; Han, Dong Suk; Saleh, Na'Il; Elhabiri, Mourad; Weck, Marcus; Trabolsi, Ali.

In: Langmuir, Vol. 32, No. 28, 19.07.2016, p. 7144-7150.

Research output: Contribution to journalArticle

Benyettou, F, Zheng, X, Elacqua, E, Wang, Y, Dalvand, P, Asfari, Z, Olsen, JC, Han, DS, Saleh, NI, Elhabiri, M, Weck, M & Trabolsi, A 2016, 'Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles', Langmuir, vol. 32, no. 28, pp. 7144-7150. https://doi.org/10.1021/acs.langmuir.6b01433
Benyettou F, Zheng X, Elacqua E, Wang Y, Dalvand P, Asfari Z et al. Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles. Langmuir. 2016 Jul 19;32(28):7144-7150. https://doi.org/10.1021/acs.langmuir.6b01433
Benyettou, Farah ; Zheng, Xiaolong ; Elacqua, Elizabeth ; Wang, Yu ; Dalvand, Parastoo ; Asfari, Zouhair ; Olsen, John Carl ; Han, Dong Suk ; Saleh, Na'Il ; Elhabiri, Mourad ; Weck, Marcus ; Trabolsi, Ali. / Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles. In: Langmuir. 2016 ; Vol. 32, No. 28. pp. 7144-7150.
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