Results 1 to 10 of about 110,652 (300)

Co-existing morphologies of lamellae and double arrays of cylinders by A1BA2C tetrablock terpolymer

open access: yesGiant, 2023
Here, we observed, via small-angle X-ray scattering and transmission electron microscopy, co-existing morphologies of lamellae and cylinders by precisely tailoring the volume fraction of each block in polystyrene-b-polyisoprene-b-polystyrene-b-poly(2 ...
Hyeongkeon Yoon   +7 more
doaj   +1 more source

Ordering at two length scales in comb-coil diblock copolymers consisting of only two different monomers [PDF]

open access: yes, 2001
The microphase separated morphology of a melt of a specific class of comb-coil diblock copolymers, consisting of an AB comb block and a linear homopolymer A block, is analyzed in the weak segregation limit.
Nap, R.J., ten Brinke, G., ten Brinke, T
core   +13 more sources

Self-assembled pagoda-like nanostructure-induced vertically stacked split-ring resonators for polarization-sensitive dichroic responses

open access: yesNano Convergence, 2022
Stacked split-ring resonators (SSRR) arrays exhibiting polarization-sensitive dichroic responses in both visible and near-infrared wavelengths are realized over a centimeter-scale large area.
Sanghoon Kim   +9 more
doaj   +1 more source

Phospholipid-mimicking block, graft, and block-graft copolymers for phase-transition microbubbles as ultrasound contrast agents

open access: yesFrontiers in Pharmacology, 2022
Background: Lipid and polymer microbubbles (MBs) are widely used as ultrasound contrast agents in clinical diagnosis, and possess great potential in ultrasound-mediated therapy due to their drug loading function.
Jianbo Huang   +3 more
doaj   +1 more source

Solvent-Free Synthesis of Multifunctional Block Copolymer and Formation of DNA and Drug Nanocarriers

open access: yesNanomaterials, 2023
The synthesis of well-defined multifunctional polymers is of great importance for the development of complex materials for biomedical applications.
Radostina Kalinova   +4 more
doaj   +1 more source

Spraying of Ultrathin Isoporous Block Copolymer Membranes—A Story about Challenges and Limitations

open access: yesMembranes, 2020
Isoporous membranes can be prepared by a combination of self-assembly of amphiphilic block copolymers and the non-solvent induced phase separation process.
Thomas Bucher   +4 more
doaj   +1 more source

Synthesis of Block Copolymer Brush by RAFT and Click Chemistry and Its Self-Assembly as a Thin Film

open access: yesMolecules, 2020
A well-defined block copolymer brush poly(glycidyl methacrylate)-graft-(poly(methyl methacrylate)-block- poly(oligo(ethylene glycol) methyl ether methacrylate)) (PGMA-g-(PMMA-b-POEGMA)) is synthesized via grafting from an approach based on a combination ...
Hajeeth Thankappan   +5 more
doaj   +1 more source

Core-shell structures in single flexible-semiflexible block copolymers: Finding the free energy minimum for the folding transition [PDF]

open access: yes, 2007
We investigate the folding transition of a single diblock copolymer consisting of a semiflexible and a flexible block. We obtain a {\it Saturn-shaped} core-shell conformation in the folded state, in which the flexible block forms a core and the ...
Buguin A.   +3 more
core   +2 more sources

Transient Optical Characterisation of Donor-Acceptor Block Copolymers for Use in Solar Cells [PDF]

open access: yes, 2010
This thesis presents a study of photo-active, semiconducting block copolymers for use in molecular solar cells. Current state-of-the-art organic devices utilise blends of two (or more) materials that are co-deposited from a common solution; the resulting
King, Simon P., King, Simon P.
core   +1 more source

Phase behaviour of block copolymer melts with arbitrary architecture [PDF]

open access: yes, 2000
The Leibler theory [L. Leibler, Macromolecules, v.13, 1602 (1980)] for microphase separation in AB block copolymer melts is generalized for systems with arbitrary topology of molecules.
Fraaije, J. G. E. M., Morozov, A. N.
core   +3 more sources

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