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Assembling oppositely charged lock and key responsive colloids: A mesoscale analog of adaptive chemistry

Mihut, Adriana M. LU ; Stenqvist, Björn LU ; Lund, Mikael LU ; Schurtenberger, Peter LU and Crassous, Jerome LU (2017) In Science advances 3(9). p.1700321-1700321
Abstract
We have seen a considerable effort in colloid sciences to copy Nature’s successful strategies to fabricate complex functional structures through self-assembly. This includes attempts to design colloidal building blocks and their intermolecular interactions, such as creating the colloidal analogs of directional molecular interactions, molecular recognition, host-guest systems, and specific binding. We show that we can use oppositely charged thermoresponsive particles with complementary shapes, such as spherical and bowl-shaped particles, to implement an externally controllable lock-and-key self-assembly mechanism. The use of tunable electrostatic interactions combined with the temperature-dependent size and shape and van der Waals... (More)
We have seen a considerable effort in colloid sciences to copy Nature’s successful strategies to fabricate complex functional structures through self-assembly. This includes attempts to design colloidal building blocks and their intermolecular interactions, such as creating the colloidal analogs of directional molecular interactions, molecular recognition, host-guest systems, and specific binding. We show that we can use oppositely charged thermoresponsive particles with complementary shapes, such as spherical and bowl-shaped particles, to implement an externally controllable lock-and-key self-assembly mechanism. The use of tunable electrostatic interactions combined with the temperature-dependent size and shape and van der Waals interactions of these building blocks provides an exquisite control over the selectivity and specificity of the interactions and self-assembly process. The dynamic nature of the mechanism allows for reversibly cycling through various structures that range from weakly structured dense liquids to well-defined molecule-shaped clusters with different configurations through variations in temperature and ionic strength. We link this complex and dynamic self-assembly behavior to the relevant molecular interactions, such as screened Coulomb and van der Waals forces and the geometrical complementarity of the two building blocks, and discuss our findings in the context of the concepts of adaptive chemistry recently introduced to molecular systems. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Science advances
volume
3
issue
9
pages
1700321 - 1700321
publisher
American Association for the Advancement of Science (AAAS)
external identifiers
  • wos:000411592600043
  • scopus:85041187941
ISSN
2375-2548
DOI
10.1126/sciadv.1700321
language
English
LU publication?
yes
id
be4cdacb-8c1e-4822-a046-08d27850e80a
alternative location
http://advances.sciencemag.org/lookup/doi/10.1126/sciadv.1700321
date added to LUP
2017-10-04 11:23:39
date last changed
2018-03-11 04:43:53
@article{be4cdacb-8c1e-4822-a046-08d27850e80a,
  abstract     = {We have seen a considerable effort in colloid sciences to copy Nature’s successful strategies to fabricate complex functional structures through self-assembly. This includes attempts to design colloidal building blocks and their intermolecular interactions, such as creating the colloidal analogs of directional molecular interactions, molecular recognition, host-guest systems, and specific binding. We show that we can use oppositely charged thermoresponsive particles with complementary shapes, such as spherical and bowl-shaped particles, to implement an externally controllable lock-and-key self-assembly mechanism. The use of tunable electrostatic interactions combined with the temperature-dependent size and shape and van der Waals interactions of these building blocks provides an exquisite control over the selectivity and specificity of the interactions and self-assembly process. The dynamic nature of the mechanism allows for reversibly cycling through various structures that range from weakly structured dense liquids to well-defined molecule-shaped clusters with different configurations through variations in temperature and ionic strength. We link this complex and dynamic self-assembly behavior to the relevant molecular interactions, such as screened Coulomb and van der Waals forces and the geometrical complementarity of the two building blocks, and discuss our findings in the context of the concepts of adaptive chemistry recently introduced to molecular systems.},
  author       = {Mihut, Adriana M. and Stenqvist, Björn and Lund, Mikael and Schurtenberger, Peter and Crassous, Jerome},
  issn         = {2375-2548},
  language     = {eng},
  month        = {09},
  number       = {9},
  pages        = {1700321--1700321},
  publisher    = {American Association for the Advancement of Science (AAAS)},
  series       = {Science advances},
  title        = {Assembling oppositely charged lock and key responsive colloids: A mesoscale analog of adaptive chemistry},
  url          = {http://dx.doi.org/10.1126/sciadv.1700321},
  volume       = {3},
  year         = {2017},
}