Li Yu-lian,Song Dong-po,Li Yue-sheng.Preparation of Stimuli-responsive Structural Colored Porous Microspheres via Emulsion Self-assembly Induced by Bottlebrush Triblock Copolymers[J].ACTA POLYMERICA SINICA,2021,52(12):1591-1602.
we demonstrate the design and synthesis of a series of triblock copolymers with a poly(tert-butylacrylate) (PtBA) block between PS and PEO blocks
and disclose the influence of the middle block on interfacial self-assembly. It turned out that the transition layer at W/O interface becomes thicker in the presence of PtBA block
leading to great influence on packing parameters of the bottlebrush amphiphiles. Even though decreased ordering of nanopore arrays is observed relative to that of diblock copolymers
the middle block enables the wide tuning of reflection across the whole visible spectrum (471-717 nm) simply through variation of droplet evaporation time. Moreover
stimuli-responsive structural colored microspheres are obtained
via
hydrolysis of PtBA to poly(acrylic acid) (PAA) which can react with organic bases and form organic salts
leading to enhanced hydrophilicity of the microspheres
swelling of the photonic structure
and red-shift of structural color. A large increase of reflection maximum of up to 50 nm is achieved in the presence of arginine at a low concentration of 10
-3
mol/L. Such a color change can be completed within 4 min
providing an effective method for fast and sensitive detection. This work not only provides useful fundamental knowledge regarding the interfacial self-assembly of triblock copolymers
but also demonstrates an effective strategy for making stimuli-responsive photonic structures.
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Synthesis of Self-demulsification Thermosensitive Polymeric Surfactants and Their Application in Emulsion Polymerization
Stimuli Responsive Nano-objects via Polymerization Induced Self-assembly
Effect of Steric Hindrance on Microphase-separated Structures of Block Copolymers Constructed by Hydrogen Bonding
Regulation of Polystyrene Blocks on Stereocomplex Crystallization Behavior of Poly(L-lactic acid)/Polystyrene-b-Poly(D-lactic acid) Blends
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College of Chemical Engineering, Fuzhou University
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