Coassembly of polymer brushes and linear polymers in selective solvents provides a unique method for the fabrication of surface nanostructures on solids. However, some fundamental problems, including the effect of architecture of polymer brushes on the surface coassembly and the thermal dynamic process of the assembly, are left unsolved. To solve the fundamental problems, in this research we synthesized Y-shaped polymer brushes on silica particles and studied the coassembly mechanism of the Y-shaped polymer brushes and linear block copolymers (BCPs). Poly(ethylene glycol)-block-polystyrene (PEG-b-PS) with a pyridyl disulfide group at the junction point (PEG-(SS-py)-PS) was synthesized by a combination of click chemistry, thiol-disulfide exchange reaction, and reversible addition-fragmentation chain transfer polymerization. The block copolymer and the precursors were characterized with H-1 NMR, C-13 NMR, size exclusion chromatography, and matrix-assisted laser desorption ionization time-of-flight mass spectrometry. PEG-(SS-py)-PS chains were anchored to the thiol-modified silica particles by the thiol-disulfide exchange reaction, and Y-shaped polymer brushes with PEG and PS arms were prepared on silica particles (PEG/PS-SiO2). Coassemblies of PEG/PS Y-shaped polymer brushes and linear PEG-b-PS BCPs with different PS block lengths were studied. In THE/methanol mixtures (1/7, by volume), BCP chains and PEG/PS brushes can coassemble into surface structures. The PS block length and BCP concentration play key roles in the fabrication of surface structures. With an increase in PS block length, fewer BCP chains are organized onto the surfaces of silica particles due to the limited surface area. Different morphologies were observed in the coassembly of Y-shaped polymer brushes and linear BCPs. In the coassembly of PEG/PS-SiO2 and PEG-b-PS89, only spherical micelles are formed on silica particles. At high BCP concentrations, Y-shaped polymer brushes and PEG-b-PS143 chains coassemble into surface wormlike structures on silica particles. In the coassembly of PEG/PS-SiO2 and PEG-b-PS306, layered surface structures and fused vesicles are formed on silica particles. This research paves a new approach to the fabrication of hierarchical nanostructures on solid surfaces.
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Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USACornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA
Paik, Marvin Y.
Xu, Youyong
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Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USACornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA
Xu, Youyong
Rastogi, Abhinav
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Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA
Cornell Univ, Dept Chem & Chem Biol, Ithaca, NY 14853 USACornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA
Rastogi, Abhinav
Tanaka, Manabu
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Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USACornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA
Tanaka, Manabu
Yi, Yi
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Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USACornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA
Yi, Yi
Ober, Christopher K.
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Cornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USACornell Univ, Dept Mat Sci & Engn, Ithaca, NY 14853 USA
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Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
Cent S Univ, Minist Educ, Key Lab Resource Chem Nonferrous Met, Changsha 410083, Peoples R China
Cent S Univ, State Key Lab Powder Met, Changsha 410083, Peoples R ChinaCent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
Liu, Hui
Cui, Huanqing
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Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R ChinaCent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
Cui, Huanqing
Wang, Ruimeng
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Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R ChinaCent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
Wang, Ruimeng
Chen, Si
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Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R ChinaCent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
Chen, Si
Zhou, Wanzhu
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Guangzhou Res Inst Nonferrous Met, Guangzhou 510651, Guangdong, Peoples R ChinaCent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
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Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Max Planck Inst Colloids & Interfaces, Dept Biomat, Muhlenberg 1, D-14476 Potsdam, GermanyWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Ping, Hang
Poudel, Lokendra
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Univ Missouri, Dept Phys & Astron, 5110 Rockhill Rd, Kansas City, MO 64110 USAWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Poudel, Lokendra
Xie, Hao
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Wuhan Univ Technol, Sch Chem Chem Engn & Life Sci, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Xie, Hao
Fang, Weijian
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Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Fang, Weijian
Zou, Zhaoyong
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Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Zou, Zhaoyong
Zhai, Pengcheng
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Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Zhai, Pengcheng
Wagermaier, Wolfgang
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Max Planck Inst Colloids & Interfaces, Dept Biomat, Muhlenberg 1, D-14476 Potsdam, GermanyWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Wagermaier, Wolfgang
Fratzl, Peter
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Max Planck Inst Colloids & Interfaces, Dept Biomat, Muhlenberg 1, D-14476 Potsdam, GermanyWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Fratzl, Peter
Wang, Weimin
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Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Wang, Weimin
Wang, Hao
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Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Wang, Hao
O'Reilly, Padraic
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Mol Vista, San Jose, CA 95119 USAWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
O'Reilly, Padraic
Ching, Wai-Yim
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Univ Missouri, Dept Phys & Astron, 5110 Rockhill Rd, Kansas City, MO 64110 USAWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China
Ching, Wai-Yim
Fu, Zhengyi
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Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R ChinaWuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China