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3,871 Newest Publications about the topic copolymers
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Two-dimensional self-assembly of diblock copolymers into nanoscopic aggregates: from dots to disks, then rings, and finally short and long rods
22-05-2013 | Xiaodong Hong; Shujuan Liu; You Wang, Soft Matter, 2013
This paper presents a simple strategy that enables the two-dimensional self-assembly of an amphiphilic polystyrene-block-poly(methyl methacrylate) (PS-b-PMMA) diblock copolymer into a variety of nanoscopic aggregates to proceed on a solid substrate. After being made by dripping several drops ...
Dispersion of Al2O3 Nanoparticles with Mussel-Inspired Amphiphilic Copolymers in Organic Solvents and Formation of Hierarchic Porous Films by the Breath Figure Technique
22-05-2013 | Yuta Saito; Masatsugu Shimomura; Hiroshi Yabu, Chemical Communication, 2013
Hierarchic porous inorganic materials have attracted much attention, due to their large surface area and fast substance diffusion. We have prepared hierarchic porous films composed of Al203 nanoparticles (NPs) by using the breath figure technique. The Al203 NPs were stabilized using an ...
Synthesis and reactivity ratios of regioisomeric vinyl‐1,2,3‐triazoles with styrene
17-05-2013 | Michael Lartey, Martijn Gillissen, Brian J. Adzima, Kenichi Takizawa, David R. Luebke, Hunaid B. Nulwala, Journal of Polymer Science Part A: Polymer Chemistry, 2013
ABSTRACT The free radical reactivity ratios between styrene and different vinyl‐1,2,3‐triazole regioisomeric monomers in 1,4‐dioxane at 65 °C have been established using nonlinear least square method. The results obtained for the reactivity ratio between regioisomers show exceptionally ...
Synthesis and self‐assembling of poly(N‐isopropylacrylamide‐block‐poly(L‐lactide)‐block‐poly(N‐isopropylacrylamide) triblock copolymers prepared by combination of ring‐opening polymerization and atom transfer radical polymerization
17-05-2013 | Yanfei Hu, Vincent Darcos, Sophie Monge, Suming Li, Journal of Polymer Science Part A: Polymer Chemistry, 2013
ABSTRACT Novel thermo‐responsive poly(N‐isopropylacrylamide)‐block‐poly(l‐lactide)‐block‐poly(N‐isopropylacylamide) (PNIPAAm‐b‐PLLA‐b‐PNIPAAm) triblock copolymers were successfully prepared by atom transfer radical polymerization of NIPAAm with Br‐PLLA‐Br macroinitiator, using a ...
Synthesis and properties of butyl rubber–poly(ethylene oxide) graft copolymers with high PEO content
17-05-2013 | Solmaz Karamdoust, Colin V. Bonduelle, Ryan C. Amos, Bethany A. Turowec, Sharon Guo, Lorenzo Ferrari, Elizabeth R. G ..., Journal of Polymer Science Part A: Polymer Chemistry, 2013
ABSTRACT Butyl rubber‐poly(ethylene oxide) (PEO) graft copolymers with high PEO content (40–83 wt %) were synthesized by the functionalization and activation of the double bond moiety of butyl rubber containing high (7 mol %) isoprene content and subsequent reaction with PEO of different ...
Bulk and Thin Film Morphological Behavior of Broad Dispersity Poly(styrene-b-methyl methacrylate) Diblock Copolymers
17-05-2013 | Joan M. Widin; Myungwoong Kim; Adam K. Schmitt; Eungnak Han; Padma Gopalan; Mahesh K. Mahanthappa, Macromolecules, 2013
We describe the morphological implications of broad molecular weight dispersity on the bulk and thin film self-assembly behavior of seven model poly(styrene-block-methyl methacrylate) (SM) diblock copolymers. Derived from sequential nitroxide-mediated polymerizations, these unimodal diblock ...
Nitroxide-Mediated Polymerization-Induced Self-Assembly of Poly(poly(ethylene oxide) methyl ether methacrylate-co-styrene)-b-poly(n-butyl methacrylate-co-styrene) Amphiphilic Block Copolymers
17-05-2013 | X. G. Qiao; M. Lansalot; E. Bourgeat-Lami; B. Charleux, Macromolecules, 2013
Well-defined water-soluble brush-type homopolymers and copolymers entirely composed of poly(ethylene)oxide methacrylate (PEOMA) units with PEO side groups of various chain lengths (Mn = 300 and 950 g mol–1) were synthesized by nitroxide-mediated polymerization (NMP) using a low molar mass ...
3,6-Dithiophen-2-yl-diketopyrrolo[3,2-b]pyrrole (isoDPPT) as an Acceptor Building Block for Organic Opto-Electronics
16-05-2013 | Shaofeng Lu; Martin Drees; Yan Yao; Damien Boudinet; He Yan; Hualong Pan; Jingqi Wang; Yuning Li; Hakan Usta; Antoni ..., Macromolecules, 2013
The electron acceptor building block for π-conjugated copolymers, 3,6-dithiophen-2-yl-diketopyrrolo[3,2-b]pyrrole (isoDPPT), was synthesized following two routes. The comparison between isoDPPT and widely investigated 3,6-dithiophen-2-yl-diketopyrrolo[3,4-c]pyrrole (DPPT) in terms of ...
Roles of chemical pattern period and film thickness in directed self-assembly of diblock copolymers
15-05-2013 | Yong-Biao Yang; So Jung Park; Pilwon Kim; Jaeup U. Kim, Soft Matter, 2013
We develop a new numerical self-consistent field theory (SCFT) scheme for examining thin film nanostructures of cylinder-forming AB diblock copolymers on a chemically patterned substrate. Using this, we make a systematic analysis to achieve a fundamental understanding of the model system, and ...
Design and Synthesis of Copolymers of Indacenodithiophene and Naphtho[1,2-c:5,6-c]bis(1,2,5-thiadiazole) for Polymer Solar Cells
15-05-2013 | Ming Wang; Xiaowen Hu; Liqian Liu; Chunhui Duan; Peng Liu; Lei Ying; Fei Huang; Yong Cao, Macromolecules, 2013
Three donor–acceptor type of narrow band gap conjugated polymers with enlarged coplanar skeleton were synthesized via Stille copolymerization of indacenodithiophene (IDT) and naphtho[1,2-c:5,6-c]bis(1,2,5-thiadiazole) (NT) based monomers. The energy levels, absorption spectra and band gaps of ...
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