Chen Jem-Kun, Chang Chi-Jung
Department of Materials Science and Engineering, National Taiwan University of Science and Technology, 43, Section 4, Keelung Road, Taipei 106, Taiwan.
Department of Chemical Engineering, Feng Chia University, 100 Wenhwa Road, Seatwen, Taichung 40724, Taiwan.
Materials (Basel). 2014 Jan 28;7(2):805-875. doi: 10.3390/ma7020805.
In the past two decades, we have witnessed significant progress in developing high performance stimuli-responsive polymeric materials. This review focuses on recent developments in the preparation and application of patterned stimuli-responsive polymers, including thermoresponsive layers, pH/ionic-responsive hydrogels, photo-responsive film, magnetically-responsive composites, electroactive composites, and solvent-responsive composites. Many important new applications for stimuli-responsive polymers lie in the field of nano- and micro-fabrication, where stimuli-responsive polymers are being established as important manipulation tools. Some techniques have been developed to selectively position organic molecules and then to obtain well-defined patterned substrates at the micrometer or submicrometer scale. Methods for patterning of stimuli-responsive hydrogels, including photolithography, electron beam lithography, scanning probe writing, and printing techniques (microcontact printing, ink-jet printing) were surveyed. We also surveyed the applications of nanostructured stimuli-responsive hydrogels, such as biotechnology (biological interfaces and purification of biomacromoles), switchable wettability, sensors (optical sensors, biosensors, chemical sensors), and actuators.
在过去二十年中,我们见证了高性能刺激响应性聚合物材料开发方面的重大进展。本综述聚焦于图案化刺激响应性聚合物的制备与应用的最新进展,包括热响应层、pH/离子响应性水凝胶、光响应膜、磁响应复合材料、电活性复合材料以及溶剂响应复合材料。刺激响应性聚合物的许多重要新应用都在纳米和微制造领域,在该领域中,刺激响应性聚合物正成为重要的操控工具。已经开发出一些技术来选择性地定位有机分子,进而在微米或亚微米尺度上获得定义明确的图案化基底。对刺激响应性水凝胶的图案化方法进行了综述,包括光刻、电子束光刻、扫描探针写入以及印刷技术(微接触印刷、喷墨印刷)。我们还综述了纳米结构刺激响应性水凝胶的应用,如生物技术(生物界面和生物大分子的纯化)、可切换润湿性、传感器(光学传感器、生物传感器、化学传感器)以及致动器。