Active and responsive polymer surfaces

Abstract

A central challenge in polymer science today is creating materials that dynamically alter their structures and properties on demand, or in response to changes in their environment. Surfaces represent an attractive area of focus, since they exert disproportionately large effects on properties such as wettability, adhesiveness, optical appearance, and bioactivity, enabling pronounced changes in properties to be accomplished through subtle changes in interfacial structure or chemistry. In this critical review, we review the recent research progress into active and responsive polymer surfaces. The chief purpose of this article is to summarize the advanced preparation techniques and applications in this field from the past decade. This review should be of interest both to new scientists in this field and the interdisciplinary researchers who are working on "intelligent" polymer surfaces (117 references).

pH-control of the protein resistance of thin hydrogel gradient films

“…The preparation of such responsive materiaks is also a topic of great current interest. 21,22 Early works on responsive hydrogels include temperature-sensitive systems based on N-isopropylacrylamide, 23 and pH-responsive polymers based on methacrylates, 24 while more recent examples show that volume phase transitions (i.e. mechanical) [25][26][27] or wetting 28,29 properties can be controlled via environmental conditions, such as temperature 26 , pH 25,27,29 or light 28 .…”

Multi-Switchable Bioelectrocatalysis Based on Semi-Interpenetrating Polymer Network Films Prepared by Enzyme-Induced Polymerization

“…These results indicate that it is the electrostatic interaction between the probes and the films that controls the pH-switchable CV response of the system. 4 2− -sensitive CV switching behaviors of PDEA-HA-GOD films toward Fc(COOH) 2 .-The CV behavior of Fc(COOH) 2 at PDEA-HA-GOD film electrodes was sensitive to solution temperature. As shown in Fig.…”

“…[1][2][3][4] In biological systems, many factors can simultaneously affect the catalytic process of enzymes, and the corresponding on-off behaviors of enzymatic reactions are observed. [5][6][7] Thus, the combination of stimuli-responsive interface with bioelectrocatalysis based on redox enzymes is of great significance for understanding the mechanism of switching property of enzymatic reactions in real life.…”

External‐Field‐Induced Gradient Wetting for Controllable Liquid Transport: From Movement on the Surface to Penetration into the Surface

“…[1][2][3][4][5][6][7][8] The liquid-wetting behavior on a solid or liquid surface is mainly dependent on the chemical composition and surface roughness, which play important roles in liquid transport. [9][10][11][12][13][14][15][16] The wettability gradient of a surface for a liquid droplet with an asymmetrical contact angle (CA) can produce a driving force for liquid motion, which is generally generated by introducing a chemical or structure gradient. [17][18][19][20][21][22][23][24][25][26][27][28] External-field-responsive liquid transport has received extensive research interest owing to its important applications in microfluidic devices, biological medical, liquid printing, separation, and so forth.…”