title: Microphase Separation within Disk Shaped Aggregates of Triblock Bottlebrushes.
abstract: Well-defined AbBA triblock bottlebrush with poly(N,N-dimethyl acrylamide) (PAm) as A block and polyacrylate, densely grafted with poly(tert-butyl acrylate)-block-polystyrene (PBA-b-PS), as brush bB block is prepared by controlled radical polymerization and click chemistry. The triblock copolymer with a composition of PAm200 -b-b(PBA14 -b-PS47 )167 -b-PAm200 is obtained and is further transformed into PAm200 -b-b(PAA14 -b-PS47 )167 -b-PAm200 by hydrolysis of the PBA segment into poly(acrylic acid) (PAA). In a mixture of N,N-dimethylformamide (DMF) and methanol, a poor solvent of bB block, PAm200 -b-b(PAA14 -b-PS47 )167 -b-PAm200 self-assembled into disk-like platelets, which have an internal lamellar structure by further microphase-separation of PAA-b-PS branches in 2D. Moreover, Ag nanoparticles are aligned by PAA segments along the disk to form a pattern.
authors: Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China.
authors: Meiling
authors: M
authors: Long
authors: Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China.
authors: Yi
authors: Y
authors: Shi
authors: Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China.
authors: Ke
authors: K
authors: Zhang
authors: Laboratory of Polymer Physics and Chemistry, Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100190, China.|Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou, 510275, China.
authors: Yongming
authors: Y
authors: Chen
mesh_terms: D000178:Acrylamides / Q000737:chemistry*; D000180:Acrylic Resins / Q000737:chemistry*; D057930:Click Chemistry; D005609:Free Radicals / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry; D018625:Microscopy, Atomic Force; D046529:Microscopy, Electron, Transmission; D058105:Polymerization; D011137:Polystyrenes / Q000737:chemistry*; D012834:Silver / Q000737:chemistry
chemical_list: D000178:Acrylamides; D000180:Acrylic Resins; D005609:Free Radicals; D011137:Polystyrenes; C429790:poly(N,N-dimethylacrylamide); C547381:poly(butyl acrylate-styrene); D012834:Silver
keywords: block copolymers; microphase separation; molecular bottlebrushes; self-assembly