Persistent Formation of Self-Assembled Cylindrical Structure in a Liquid Crystalline Block Copolymer Constructed by Hydrogen Bonding

2018 ◽  
Vol 51 (15) ◽  
pp. 5676-5684 ◽  
Author(s):  
Hongbing Pan ◽  
Wei Zhang ◽  
Anqi Xiao ◽  
Xiaolin Lyu ◽  
Zhihao Shen ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Block Copolymer ◽  
Liquid Crystalline ◽  
Cylindrical Structure ◽  
Self Assembled

Self-Assembly of Block Copolymers for Photonic-Bandgap Materials

MRS Bulletin ◽  
2005 ◽  
Vol 30 (10) ◽  
pp. 721-726 ◽  
Author(s):  
Jongseung Yoon ◽  
Wonmok Lee ◽  
Edwin L. Thomas
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Photonic Crystals ◽  
Liquid Crystalline ◽  
Photonic Bandgap ◽  
Photonic Bandgap Materials ◽  
Periodic Microstructures ◽  
Self Assembled ◽  
Bandgap Materials

AbstractSelf-assembled block copolymer systems with an appropriate molecular weight to produce a length scale that will interact with visible light are an alternative platform material for the fabrication of large-area, well-ordered photonic-bandgap structures at visible and near-IR frequencies.Over the past years, one-, two-, and three-dimensional photonic crystals have been demonstrated with various microdomain structures created through microphase separation of block copolymers. The size and shape of periodic microstructures of block copolymers can be readily tuned by molecular weight, relative composition of the copolymer, and blending with homopolymers or plasticizers.The versatility of photonic crystals based on block copolymers is further increased by incorporating inorganic nanoparticles or liquid-crystalline guest molecules (or using a liquid-crystalline block), or by selective etching of one of the microdomains and backfilling with high-refractive-index materials. This article presents an overview of photonic-bandgap materials enabled by self-assembled block copolymers and discusses the morphology and photonic properties of block-copolymer-based photonic crystals containing nanocomposite additives.We also provide a view of the direction of future research, especially toward novel photonic devices.

Microphase-separated block copolymer film anchored on ITO substrate with newly designed self-assembled monolayer

2011 ◽  
Vol 1302 ◽  
Author(s):  
Takenori Goda ◽  
Shingo Hadano ◽  
Tomokazu Iyoda
Keyword(s):  
Block Copolymer ◽  
Indium Tin Oxide ◽  
Photoelectron Spectroscopy ◽  
Liquid Crystalline ◽  
Contact Angle Measurement ◽  
Angle Measurement ◽  
Self Assembled Monolayer ◽  
Silane Coupling ◽  
Self Assembled ◽  
Azobenzene Mesogens

ABSTRACTThe surface of Indium-tin-oxide (ITO) substrate was modified with a newly designed silane coupling molecule bearing azobenzene moiety. The silane coupling molecules formed self-assembled monolayer (SAM) on pretreated ITO surface. The SAM growth and coverage were quantified by contact angle measurement and X-ray photoelectron spectroscopy (XPS). The silane coupling molecules improved the adhesion between the ITO surface and an amphiphilic block copolymer (BC) thin film, which consists of poly(ethylene oxide) (PEO) and poly(methacrylate) (PMA) with azobenzene mesogens, because the azobenzene moieties of the SAM anchor the liquid crystalline PMA azobenzene domains of BC.

Hierarchically ordered nanostructures of a supramolecular rod-coil block copolymer with a hydrogen-bonded discotic mesogen

2019 ◽  
Vol 10 (8) ◽  
pp. 991-999 ◽  
Author(s):  
Hongbing Pan ◽  
Wei Zhang ◽  
Anqi Xiao ◽  
Xiaolin Lyu ◽  
Pingping Hou ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Liquid Crystalline ◽  
Hierarchical Structures ◽  
Molar Ratio ◽  
Ordered Nanostructures ◽  
Hydrogen Bonded

Supramolecular liquid crystalline block copolymers prepared via hydrogen bonding exhibit hierarchical structures that can be tuned by varying the molar ratio of the discotic hydrogen-bonding acceptor to the block copolymer donor.

Self-healing and phase behavior of liquid crystalline elastomer based on a block copolymer constituted of a side-chain liquid crystalline polymer and a hydrogen bonding block

2015 ◽  
Vol 3 (33) ◽  
pp. 8526-8534 ◽  
Author(s):  
Miao Yan ◽  
Jun Tang ◽  
He-Lou Xie ◽  
Bin Ni ◽  
Hai-Liang Zhang ◽  
...  
Keyword(s):  
Hydrogen Bonding ◽  
Block Copolymer ◽  
Hydrogen Bonds ◽  
Phase Behavior ◽  
Liquid Crystalline Polymer ◽  
Liquid Crystalline ◽  
Crystalline Polymer ◽  
Side Chain ◽  
Self Healing ◽  
Healing Property

Self-healing liquid crystalline elastomers were fabricated by hydrogen-bonding and the hydrogen bonds in this system played an important role both in self-healing property and the liquid crystalline phase behavior.

Self-Assembled Hybrids Composed of Block Copolymer/Porphyrin–Metal Complex via Hydrogen Bonding

2019 ◽  
Vol 1 (12) ◽  
pp. 3432-3442
Author(s):  
Atsushi Noro ◽  
Hiroto Asai ◽  
Kimitaka Higuchi ◽  
Yushu Matsushita
Keyword(s):  
Hydrogen Bonding ◽  
Block Copolymer ◽  
Metal Complex ◽  
Self Assembled
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