Self‐Assembled Polymeric Supramolecular Frameworks

Houbenov, Nikolay; Haataja, Johannes S.; Iatrou, Hermis; Hadjichristidis, Nikos; Ruokolainen, Janne; Faul, Charl F. J.; Ikkala, Olli

doi:10.1002/ange.201007185

Cited by 11 publications

(14 citation statements)

References 52 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Immiscibility of the blocks can be promoted with supramolecular methods by the block-specific complexation of low-molecular-weight additives. 1 , 2 , 3 , 4 , 5 , 6 , 7 Therein, a wide variety of additives ranging from amphiphilic molecules to mesogens incorporating chemical groups that mediate supramolecular interactions with polymer chains can be chosen. Several kinds of noncovalent interactions are useful for binding these additives to polymers, such as ionic interactions, metal coordination, hydrogen bonding, or their combinations.…”

Section: Introductionmentioning

confidence: 99%

Hierarchical Self-Assembly of Halogen-Bonded Block Copolymer Complexes into Upright Cylindrical Domains

Milani

Houbenov

Fernández-Palacio

et al. 2017

Chem

Self Cite

View full text Add to dashboard Cite

SummarySelf-assembly of block copolymers into well-defined, ordered arrangements of chemically distinct domains is a reliable strategy for preparing tailored nanostructures. Microphase separation results from the system, minimizing repulsive interactions between dissimilar blocks and maximizing attractive interactions between similar blocks. Supramolecular methods have also achieved this separation by introducing small-molecule additives binding specifically to one block by noncovalent interactions. Here, we use halogen bonding as a supramolecular tool that directs the hierarchical self-assembly of low-molecular-weight perfluorinated molecules and diblock copolymers. Microphase separation results in a lamellar-within-cylindrical arrangement and promotes upright cylindrical alignment in films upon rapid casting and without further annealing. Such cylindrical domains with internal lamellar self-assemblies can be cleaved by solvent treatment of bulk films, resulting in separated and segmented cylindrical micelles stabilized by halogen-bond-based supramolecular crosslinks. These features, alongside the reversible nature of halogen bonding, provide a robust modular approach for nanofabrication.

show abstract

Section: Introductionmentioning

confidence: 99%

Hierarchical Self-Assembly of Halogen-Bonded Block Copolymer Complexes into Upright Cylindrical Domains

Milani

Houbenov

Fernández-Palacio

et al. 2017

Chem

Self Cite

View full text Add to dashboard Cite

show abstract

“…Supramolecular principles further allow hierarchical polymeric structures, modularity, complexity and functionalities678910. Self-assembly of polymers results in microphase-separated domains at a length scale of ca.…”

mentioning

confidence: 99%

“…Self-assembly of polymers has received significant attention aiming at simple and low-cost methods for new technologies 1 2 3 4 5 . Supramolecular principles further allow hierarchical polymeric structures, modularity, complexity and functionalities 6 7 8 9 10 . Self-assembly of polymers results in microphase-separated domains at a length scale of ca.…”

mentioning

confidence: 99%

Halogen-bonded mesogens direct polymer self-assemblies up to millimetre length scale

et al. 2014

Self Cite

View full text Add to dashboard Cite

Aligning polymeric nanostructures up to macroscale in facile ways remains a challenge in materials science and technology. Here we show polymeric self-assemblies where nanoscale organization guides the macroscopic alignment up to millimetre scale. The concept is shown by halogen bonding mesogenic 1-iodoperfluoroalkanes to a star-shaped ethyleneglycol-based polymer, having chloride end-groups. The mesogens segregate and stack parallel into aligned domains. This leads to layers at ~10 nm periodicity. Combination of directionality of halogen bonding, mesogen parallel stacking and minimization of interfacial curvature translates into an overall alignment in bulk and films up to millimetre scale. Upon heating, novel supramolecular halogen-bonded polymeric liquid crystallinity is also shown. As many polymers present sites capable of receiving halogen bonding, we suggest generic potential of this strategy for aligning polymer self-assemblies.

show abstract

“…Usually, one block is ionic, while the other block is non-ionic. One prominent uniqueness is that DHBCs themselves behave like normal polyelectrolytes without showing amphiphilic characteristics, but their amphiphilicity can be modulated by the variation of the temperature, ionic strength, pH value, and addition of oppositely charged substances, e.g., multivalent ions, − surfactants, − and polymers, − to form hierarchical super-amphiphiles. Using such a strategy, several unique super-amphiphiles with stimuli–responsive properties have been reported very recently. − …”

Section: Introductionmentioning

confidence: 99%

Association Behaviors of Dodecyltrimethylammonium Bromide with Double Hydrophilic Block Co-polymer Poly(ethylene glycol)-block-Poly(glutamate sodium)

et al. 2012

View full text Add to dashboard Cite

The association behaviors of single-chain surfactant dodecyltrimethylammonium bromide (DTAB) with double hydrophilic block co-polymers poly(ethylene glycol)-b-poly(sodium glutamate) (PEG(113)-PGlu(50) or PEG(113)-PGlu(100)) were investigated using isothermal titration microcalorimetry, cryogenic transmission electron microscopy, circular dichroism, ζ potential, and particle size measurements. The electrostatic interaction between DTAB and the oppositely charged carboxylate groups of PEG-PGlu induces the formation of super-amphiphiles, which further self-assemble into ordered aggregates. Dependent upon the charge ratios between DTAB and the glutamic acid residue of the co-polymer, the mixture solutions can change from transparent to opalescent without precipitation. Dependent upon the chain length of the PGlu block, the mixture of DTAB and PEG-PGlu diblocks can form two different aggregates at their corresponding electroneutral point. Spherical and rod-like aggregates are formed in the PEG(113)-PGlu(50)/DTAB mixture, while the vesicular aggregates are observed in the PEG(113)-PGlu(100)/DTAB mixture solution. Because the PEG(113)-PGlu(100)/DTAB super-amphiphile has more hydrophobic components than that of the PEG(113)-PGlu(50)/DTAB super-amphiphile, the former prefers forming the ordered aggregates with higher curvature, such as spherical and rod aggregates, but the latter prefers forming vesicular aggregates with lower curvature.

show abstract

Self‐Assembled Polymeric Supramolecular Frameworks

Cited by 11 publications

References 52 publications

Hierarchical Self-Assembly of Halogen-Bonded Block Copolymer Complexes into Upright Cylindrical Domains

Hierarchical Self-Assembly of Halogen-Bonded Block Copolymer Complexes into Upright Cylindrical Domains

Halogen-bonded mesogens direct polymer self-assemblies up to millimetre length scale

Association Behaviors of Dodecyltrimethylammonium Bromide with Double Hydrophilic Block Co-polymer Poly(ethylene glycol)-block-Poly(glutamate sodium)

Contact Info

Product

Resources

About