Stimuli-Induced Wettability Conversion in Spiropyran-FunctionalizedPolymeric Nanofibers

Photochromic polymer nanofibers have attracted much attention in various fields owing to theirunique properties. Surface wettability of these nanofibers could reversibly be tuned by visible lightor UV irradiation. In this study, spiropyran-functionalized polymeric nanofibers were preparedthrough the electrospinning method. These polymeric nanofibers displayed uniform morphology androsy fluorescence emission upon ۳۶۵ nm irradiation. Evaluation of the optical properties of thenanofibers showed a remarkable hydrophobicity/hydrophilicity photoswitching (variation of surfacewater contact angle from ۱۳۷ to ۴۵° upon UV/visible light irradiation cycles), which show thepotential application of these nanofibers as oil/water separating nanofibrous membranes

کلیدواژه ها:

Smart polymers ، Electrospinning ، Nanofibers ، Spiropyran ، Switchable wettability