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Hydrogen‐Bonded Siloxane Liquid Crystals for Hybrid Nanomaterials
Author(s) -
Nickmans Koen,
Jansma Sjoerd O.,
Hey Daniela,
Velpula Gangamallaiah,
Teyssandier Joan,
De Feyter Steven,
Schenning Albert P. H. J.
Publication year - 2018
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.201800130
Subject(s) - nanomaterials , nanoporous , hybrid material , lamellar structure , supramolecular chemistry , nanotechnology , azobenzene , chemistry , hydrogen bond , siloxane , copolymer , columnar phase , liquid crystal , phase (matter) , chemical engineering , molecule , materials science , crystallography , organic chemistry , liquid crystalline , polymer , optoelectronics , engineering
The self‐assembly of molecular inorganic/organic hybrid building blocks into ordered hierarchical nanomaterials with a tunable morphology is an enormous challenge. Here, we describe the synthesis and characterization of a novel liquid crystalline hydrogen‐bonding hepta(dimethylsiloxane) azobenzene carboxylic acid dimer. This inorganic/organic hybrid dimer forms sub‐5 nm lamellar features in the bulk and at the liquid solid interface. When mixed with a complementary hydrogen‐bonding disk‐shaped small molecule, a columnar hexagonal phase is formed. When adding a block copolymer containing hydrogen bond‐accepting moieties, a hierarchical nanostructured material is obtained with a hexagonal columnar arrangement perpendicular to lamellae super structure. Our supramolecular approach shows that hierarchical hybrid nanomaterials can be fabricated with controlled properties which is appealing for applications such as nanoporous materials, organic electronics, and nanolithography.