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Photoswitchable and Solvent-Controlled Directional Actuators: Supramolecular Assembly and Crosslinked Polymers.
Chen, Yi-Fan; Hsieh, Chia-Ling; Lee, Lin-Ruei; Liu, Yu-Chun; Lee, Min-Jie; Chen, Jiun-Tai.
Afiliación
  • Chen YF; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
  • Hsieh CL; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
  • Lee LR; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
  • Liu YC; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
  • Lee MJ; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
  • Chen JT; Department of Applied Chemistry, National Yang Ming Chiao Tung University, Hsinchu, 30010, Taiwan.
Macromol Rapid Commun ; 44(2): e2200547, 2023 Jan.
Article en En | MEDLINE | ID: mdl-36208074
Untethered small actuators have drawn tremendous interest owing to their reversibility, flexibility, and widespread applications in various fields. For polymer actuators, however, it is still challenging to achieve programmable structural changes under different stimuli caused by the intractability and single-stimulus responses of most polymer materials. Herein, multi-stimuli-responsive polymer actuators that can respond to light and solvent via structural changes are developed. The actuators are based on bilayer films of polydimethylsiloxane (PDMS) and azobenzene chromophore (AAZO)-crosslinked poly(diallyldimethylammonium chloride) (PDAC). Upon UV light irradiation, the AAZO undergoes trans-cis-trans photoisomerization, causing the bending of the bilayer films. When the UV light is off, a shape recovery toward an opposite direction occurs spontaneously. The reversible deformation can be repeated at least 20 cycles. Upon solvent vapor annealing, one of the bilayer films can be selectively swollen, causing the bending of the bilayer films with the directions controlled by the solvent vapors. The effects of different parameters, such as the weight ratios of AAZO and film thicknesses, on the bending angles and curvatures of the polymer films are also analyzed. The results demonstrate that multi-stimuli-responsive actuators with fast responses and high reproducibility can be fulfilled.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polímeros / Polímeros de Estímulo Receptivo Idioma: En Revista: Macromol Rapid Commun Año: 2023 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Alemania
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Polímeros / Polímeros de Estímulo Receptivo Idioma: En Revista: Macromol Rapid Commun Año: 2023 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Alemania