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

doi:10.1021/acs.langmuir.6b01433

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 journal › Article › peer-review

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 language	English (US)
Pages (from-to)	7144-7150
Number of pages	7
Journal	Langmuir
Volume	32
Issue number	28
DOIs	https://doi.org/10.1021/acs.langmuir.6b01433
State	Published - Jul 19 2016

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Surfaces and Interfaces
Spectroscopy
Electrochemistry

Access to Document

10.1021/acs.langmuir.6b01433

Cite this

@article{1f58816477434bcf81060dcfa608d7f9,

title = "Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles",

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.",

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

note = "Publisher Copyright: {\textcopyright} 2016 American Chemical Society.",

year = "2016",

month = jul,

day = "19",

doi = "10.1021/acs.langmuir.6b01433",

language = "English (US)",

volume = "32",

pages = "7144--7150",

journal = "Langmuir",

issn = "0743-7463",

publisher = "American Chemical Society",

number = "28",

}

TY - JOUR

T1 - Redox-Responsive Viologen-Mediated Self-Assembly of CB[7]-Modified Patchy Particles

AU - Benyettou, Farah

AU - Zheng, Xiaolong

AU - Elacqua, Elizabeth

AU - Wang, Yu

AU - Dalvand, Parastoo

AU - Asfari, Zouhair

AU - Olsen, John Carl

AU - Han, Dong Suk

AU - Saleh, Na'Il

AU - Elhabiri, Mourad

AU - Weck, Marcus

AU - Trabolsi, Ali

PY - 2016/7/19

Y1 - 2016/7/19

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84978977495&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84978977495&partnerID=8YFLogxK

U2 - 10.1021/acs.langmuir.6b01433

DO - 10.1021/acs.langmuir.6b01433

M3 - Article

AN - SCOPUS:84978977495

SN - 0743-7463

VL - 32

SP - 7144

EP - 7150

JO - Langmuir

JF - Langmuir

IS - 28

ER -

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

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this